Interesting things from NVSS

• by Dolorous_Edd

  Well, to keep things interesting I like to explore area around RGZ pictures and once in a while I spot something interesting
  So I diceded to post them maybe something interesting will pop up, I will try to avoid known sources to the best of my abilities

  Spotted this thing in the vicinity of the RGZ picture

  Triple, I think , center ~ 16 36 57.17 +21 40 17.3 SDSS J163657.18+214016.9 or J163657.20+214009.2

  NVSS 0.18 degree with contours from FIRST

  

  NED search result

  Posted February 5, 2014 6:10 AM

• by Dolorous_Edd

  Maybe another triple

  NVSS 0.18 degree ~ 10 25 45.79 +01 34 16.0

  

  Possible core

  Posted February 5, 2014 6:29 AM

• by Dolorous_Edd

  Looks like a double ~16 47 28.45 +45 00 58.3

  Perhaps this is 6C B164557.9+450636

  NVSS 0.12 degree

  

  Posted February 6, 2014 11:55 AM

• by Dolorous_Edd

  Triple or isolated sources? ~15 23 24.78 +28 25 25.6

  NED search within suspected center

  NVSS 0.6 degree

  

  Posted February 6, 2014 1:30 PM

• by Dolorous_Edd

  Maybe a triple ~15 26 12.71 +29 38 56.6

  If we presume that the center ~ 15 26 12.44 +29 38 53.0 NED search result

  maybe 2MASX J15261183+2939048

  NVSS 0.3 degree

  

  Posted February 6, 2014 1:41 PM

• by Dolorous_Edd

  Hmm ... slightly reminded me something ~14 42 49.78 +52 11 18.7

  NVSS 0, 15 degree

  

  Posted February 10, 2014 8:32 AM

• by Dolorous_Edd

  NVSS 0.29 degree - 2MASX J15280499+0544278 - J152804.95+054428.2

  The center looks like a triple on the FIRST image

  

  Posted February 11, 2014 7:27 AM

• by Dolorous_Edd

  Maybe a WAT in cluster [WLH2009] J177.47209+05.70080

  Center ( or hotspot ) ~ 11 49 53.35 +05 41 58.7

  NED search result

  NVSS 0.13 degree

  

  Posted February 13, 2014 1:46 PM

• by Dolorous_Edd

  This is weird .. this a diffuse blob around NGC 0240 ( 00 45 01.19 +06 07 12.4 ) didn's see any radio study

  

  Posted February 14, 2014 5:52 AM

• by Dolorous_Edd

  Assuming that this is from one source, it is a bit unusual in sense that it looks like jet has changed the direction.???

  11 06 51.32 +14 12 22.1

  

  Source: ARK 277 ???

  Edit * 131014

  found it in RGZ

  http://radiotalk.galaxyzoo.org/#/subjects/ARG0002qb0

  Posted February 15, 2014 10:58 AM

• by Dolorous_Edd

  The source is probably : IC 2465

  Is that a line of diffuse emission? curious trajectory if so.

  

  Posted February 17, 2014 6:27 AM

• by Dolorous_Edd

  Maybe it is a triple

  The host maybe part of this cluster 2MASXi J1327396+574958

  NVSS 0.23 degree

  

  Posted February 19, 2014 6:10 AM

• by Dolorous_Edd

  The host is likely SDSS J103403.84+184048.9 - J103403.84+184048.9

  NVSS 0.18 degree

  

  Posted February 19, 2014 7:28 AM

• by Dolorous_Edd

  Hmmm .. interesting

  Could be a sub giant, but still interesting enough

  Possilbe host SDSS J154955.77+581914.0

  NVSS 0.06 degree

  

  Posted February 19, 2014 8:04 AM

• by Dolorous_Edd

  A gaping hole in the Universe ... 😉

  

  Just kidding 😃

  Posted February 19, 2014 12:19 PM

• by Dolorous_Edd

  Maybe host is 2MASX J09023843+1737515 - J090238.43+173751.5

  NVSS 0.16 degree

  

  Posted February 22, 2014 8:07 AM

• by Dolorous_Edd

  Some sort of diffuse emission on the sides of 2MASX J07384178+1642319 ???

  

  Posted February 22, 2014 10:49 AM

• by Dolorous_Edd

  Rather hard to understand what is going on here.

  Is it a one source??? ~ 08 07 28.58 +28 01 22.8

  

  Posted February 22, 2014 12:45 PM

• by Dolorous_Edd

  Otherwise a normal triple . The lines of diffuse emission on the side have caught my eye

  NVSS 14 24 15.52 +25 04 18.4

  

  Posted February 24, 2014 7:56 AM

• by DocR scientist in response to Dolorous Edd's comment.

  080728.58+280122 very curious. There's one component in the south which is coincident on FIRST. No SDSS ID, no WISE available?(need to look again), no apparent Xrays, nothing obvious in VLSSr. Unfortunately, without the ARG number, I can't put this back into a collection.

  Posted February 24, 2014 3:41 PM

• by Dolorous_Edd

  Maybe a triple

  Host I think is : 2MASX J01253216+0703377 - J012532.16+070337.1

  NVSS 0.2 degree

  

  Posted February 25, 2014 1:35 PM

• by Dolorous_Edd

  Maybe one sided

  

  Host? 2MASX J09503039+6243231 - J095030.46+624322.7

  Posted February 28, 2014 6:53 AM

• by Dolorous_Edd

  Some sort of diffuse emission on the sides??? 02 32 54.45 +05 41 41.3

  Near UGC 02021 . Mentioned in 2002AJ....124..675C:

  

  Posted March 5, 2014 6:15 AM

• by Dolorous_Edd

  Having trouble to ID this thing

  ~ at 09 22 27.31 +09 19 24.7, around 8' in size ( if it is one object )

  

  Few questions

  1. Is it a one object?
  2. Host?

  SDSS J092227.55+091925.9? or SDSS J092221.60+091905.3?

  Posted July 3, 2014 8:01 PM

• by JeanTate in response to Dolorous Edd's comment.

  I think it's one object, a big doublelobe, and I think the host is indeed z_ph ~0.2 SDSS J092221.60+091905.3:

  

  SDSS J092221.60+091905.3, the S object in the center, is a distinct, compact source in FIRST, and looks like it's interacting, and has a long tidal tail (or perhaps a very warped disk):

  

  Do you have an ARG ID for this?

  <>

  Boilerplate: SDSS image per http://skyservice.pha.jhu.edu/DR10/ImgCutout/getjpeg.aspx, FIRST contours derived from FITS files produced using SkyView with Python code described in this RGZ Talk thread. Image center per the ARG image (left; J2000).

  Posted July 4, 2014 1:10 PM

• by Dolorous_Edd in response to JeanTate's comment.

  Hi Jean! Thanks for your reply!

  Unfortunately I don't have an ARG ID for this, because it was spotted during NVSS image inspection way of RGZ target.

  Just decided to post it in case it was not posted before

  Posted July 5, 2014 1:01 PM

• by JeanTate in response to Dolorous Edd's comment.

  You're very welcome Dolorous Edd!

  I've been thinking of doing some more FIRST and NVSS contour overlays on SDSS images, of some of the other NVSS fields you've posted in this thread. As far as you know, are they all like one above (i.e. you don't have an ARG ID)?

  In any case, do you some faves, among the ones in this thread, that you'd particularly like to see overlay images of?

  Posted July 5, 2014 3:06 PM

• by Dolorous_Edd in response to JeanTate's comment.

  Yes, I do have favs 😃 and yes, they don't have ARG ID

  2MASX J15280499+0544278 - J152804.95+054428.2 ( on the first page )

  SDSS J103403.84+184048.9 - J103403.84+184048.9 ( second page )

  IC 2465

  NGC 0240

  Posted July 6, 2014 6:23 PM

• by JeanTate in response to Dolorous Edd's comment.

  Cool! 😃

  I'll have a go at some overlays, but may wait a few days, to see if there are answers to my Help! thread, Given coordinates, or a FIRST ID, how to find the ARG ID(s), if there is one? If there aren't, well, I do have a couple of ideas on how we might reverse engineer an answer (I'd be happy to share those ideas right now of course).

  Posted July 6, 2014 7:45 PM

• by JeanTate in response to JeanTate's comment.

  Well, DocR says it's not possible (some caveats), so here's my Plan B:

  How do the ARG IDs map to (RA, Dec)? For example, 2da8* is (186.761, 19.819), 2da9 is (165.149, 19.819), and 2da7 is (161.177, 19.820). Look like a pattern? Spend an hour or two, using your fave analysis tool (let's say it's a spreadsheet), and is it possible to find a mapping that's close enough (in the sense of 'the ARG sought is somewhere around {here}')?

  What do you think?

  *I'm dropping the ARG000 character string in front

  Posted July 7, 2014 1:45 PM

• by Dolorous_Edd

  The host is 2MASX J09594042+1725282 or SDSS J095940.40+172528.2

  FIRTS with NVSS contours

  

  Size around 10' and z = 0.153

  Posted July 9, 2014 7:29 AM

• by JeanTate in response to Dolorous Edd's comment.

  Yes, I do have favs 😃 and yes, they don't have ARG ID

  2MASX J15280499+0544278 - J152804.95+054428.2 ( on the first page )

  And on that post:

  NVSS 0.29 degree - 2MASX J15280499+0544278 - J152804.95+054428.2

  The center looks like a triple on the FIRST image

  

  I think it's ARG0003f5p:

  

  Yes, #triple in the center, with two big lobes, the E one of which has a FIRST source at its center. The host is z_sp 0.041 SDSS J152804.95+054428.1 (dusty, not quite red and dead spectrum):

  

  

  Two NED refs, Sánchez Almeida+ 2011 and Huertas-Company+ 2011. Is the host a not boring elliptical?

  Boilerplate: SDSS image per http://skyservice.pha.jhu.edu/DR10/ImgCutout/getjpeg.aspx, FIRST (red) and NVSS (cyan) contours derived from FITS file produced using SkyView with Python code described in this RGZ Talk thread. Image center per the ARG image (ARG0003f5p; J2000.0).

  UPDATE: now posted in its own thread, ARG0003f5p - close-in triple; far-out doublelobe

  Posted July 9, 2014 8:40 PM

• by Dolorous_Edd

  Now, I know that it is very very very long shot, but could this possibly be ... 20 57 17.77 +30 55 58.5 NGC 6992

  

  Posted July 9, 2014 8:43 PM

• by JeanTate in response to JeanTate's comment.

  Well, DocR says it's not possible (some caveats), so here's my Plan B: [...]

  Well, as can be seen in this thread, Plan B worked! 😄

  I think it will also work for the other three of Dolorous Edd's faves; stay tuned.

  It goes without saying that I'd be more than happy to explain "Plan B" in as much (or little) detail as any zooite would like; just ask.

  Posted July 9, 2014 9:51 PM

• by Dolorous_Edd in response to JeanTate's comment.

  Well, as can be seen in this thread, Plan B worked!

  Spectacular work Jean! Well done!

  Posted July 9, 2014 9:52 PM

• by JeanTate in response to Dolorous Edd's comment.

  SDSS J103403.84+184048.9 - J103403.84+184048.9 ( second page )

  There does not seem to be a FIRST source near this location, or at least I can't find an ARG ID that's close. I can still do FIRST+NVSS overlays on SDSS images, but cannot tie any to the apparent core. Perhaps I could find a FIRST source in the center of one of the lobes? Anyway, I'll have a look at IC 2465 first (NGC 0240 may be too big to do easily).

  ETA: Do you have some more faves, say ~ten?

  Posted July 10, 2014 2:24 AM

• by Dolorous_Edd in response to JeanTate's comment.

  Yes, I do

  How about?

  http://radiotalk.galaxyzoo.org/#/boards/BRG0000006/discussions/DRG00004qk

  Posted July 10, 2014 9:03 AM

• by JeanTate in response to Dolorous Edd's comment.

  Done.

  Here's a copy, without the boilerplate etc:

  

  Changing the FIRST threshold to 3.5 sigma (from 5.0) makes no difference; there's no FIRST source in the center of the N NVSS lobe.

  Posted July 17, 2014 4:44 PM

• by Dolorous_Edd

  Looks like a double, though I am not sure about host

  14 16 30.02 +54 25 46.8

  

  Posted July 22, 2014 6:18 PM

• by WizardHowl

  Just came across 4C 15.53 which is a little way due S of http://radiotalk.galaxyzoo.org/#/subjects/ARG0002lte (RA: 240.65571 DEC: +15.73786).

  This looks a lot like a relic source, with no IR/optical match and too large an area of emission to be a compact ifrs. Its appearance reminds me of the description for supernova remnants but there is no accompanying nebulosity. The emission seems to be broadly spherically symmetric in NVSS but FIRST shows hotspots on opposing sides - because of the wide region of emission these do not seem likely to be lobes, to me.

  There are 19 refs in NED but the titles of the papers suggest they are only registering the existence of the object in surveys and getting a radio spectrum. There is nothing on the likely source. It does not look like anything else I have ever seen and I do not see how a distant QSO would produce such a large and spherically symmetric emission region. Relic radio emission from shocked gas within a galaxy cluster would not leave hotspots (or at least not symmetric?) and would be unlikely to be spherically symmetric in this way: so what could the source be?

  Posted July 23, 2014 6:18 PM

• by Dolorous_Edd in response to WizardHowl's comment.

  FIRST in blue

  NVSS in red

  

  Posted July 23, 2014 6:43 PM

• by Dolorous_Edd

  Likely a double to the west from

  http://radiotalk.galaxyzoo.org/#/subjects/ARG00037de

  Host probably SDSS J234137.14+082817.2 ( visible in FIRST)

  z_photo = 0.254 ± 0.0156

  

  Posted July 24, 2014 7:05 AM

• by JeanTate in response to Dolorous Edd's comment.

  Here's an NVSS and FIRST overlay on an SDSS image:

  

  See the J103403.84+184048.9 - giant doublelobe? thread for details.

  Posted July 27, 2014 4:02 PM

• by JeanTate in response to DocR's comment.

  Here's a FIRST/NVSS composite overlay on SDSS; see the 080728.58+280122 - Rather hard to understand what is going on here thread for details:

  

  Posted July 28, 2014 1:19 AM

• by Dolorous_Edd

  Having trouble to find a match for this thing (I think it is a triple ), core position according to VLA FIRST signal 08 36 12.94 +26 48 13.6,
  but nothing in SDSS ( except few galaxies ( >=0.207" from the source, but VLA signal not on top any of them )

  And apparently there is no WISE source ( or very weak)

  

  Posted July 28, 2014 9:12 PM

• by JeanTate in response to Dolorous Edd's comment.

  

  Details in 1637+2140 - triple?

  Posted July 30, 2014 5:03 PM

• by Dolorous_Edd

  Looks like a one sided source, though there is a hint of the lobe to the north ( very small compared to southern lobe )
  Host is SDSS J151131.38+071507.0

  In the FIRST image it looks like a triple

  

  Posted August 3, 2014 9:37 AM

• by Dolorous_Edd

  Trying to make sense from this picutre

  

  Question

  1. Are we dealing with 2 sources or multiple sources ( more likely)

  For the lower one

  1)SDSS J155241.40+223456.1

  2)SDSS J155235.81+223423.7

  3. SDSS J155222.35+223311.9

  For the top one

  1. SDSS J155211.29+224450.7

  Posted August 6, 2014 7:33 PM

• by ivywong scientist, admin

  Nice. Yeah, there is a high probability that the above image is 2 separate set of jets. 😃

  Posted August 7, 2014 3:56 AM

• by JeanTate in response to Dolorous Edd's comment.

  Check out Diffuse blob around NGC 240 😃

  Posted August 7, 2014 7:51 PM

• by JeanTate in response to Dolorous Edd's comment.

  1511+0715 - one sided source? I was unable to find an ARG ID associated with any FIRST source nearby ... 😦

  Posted August 7, 2014 8:45 PM

• by Dolorous_Edd

  Not sure what it is .. a single object or 3 unrelated sources

  The compact source FIRST/ NVSS is SDSS J233300.93+010045.7 or SDSS J233301.07+010045.2

  

  Posted August 14, 2014 7:05 AM

• by Dolorous_Edd

  Sadly, seems to be outside VLA FIRST and SDSS

  below is DSS image with NVSS contours

  The host is likely 2MASX J02351268+1011467

  

  Posted August 14, 2014 8:21 AM

• by Dolorous_Edd

  The host is likely SDSS J102103.08-023642.6

  

  Posted August 14, 2014 5:50 PM

• by Dolorous_Edd

  Offtopic

  The object has caught my eye, why it has such odd color? OIII emission?

  SDSS J113300.56+211702.7

  Posted August 14, 2014 7:44 PM

• by JeanTate in response to Dolorous Edd's comment.

  At z_sp 0.063, this is much closer than any Green Pea (the class of low-metallicity, compact, intense star-formation galaxy found by GZ zooites). Its apparent SDSS color is due to the strong, narrow emission lines; assuming it truly is a starburst galaxy (and not, at least partly, a narrow-line AGN), I think it is unusual, possibly very rare.

  If you have Bill Keel's contact details (he's the zooite NGC3314), I suggest you drop him a line ...

  Posted August 14, 2014 8:11 PM

• by Dolorous_Edd

  Well ... is that an enormous triple??

  Compact source in the center is 2MASX J09470799-1338276

  Compact source is outside VLA FIRST and SDSS

  "Lobes" are visible in VLSSr and GB6 survey

  

  Posted August 15, 2014 8:32 PM

• by WizardHowl in response to Dolorous Edd's comment.

  Agreed, I had a look in Skyview and it's really has to be a giant but almost nothing is known about it that I could tell. Simbad has nothing at all on it. It shows up clearly in DSS2 (red, blue and IR) and is bright in blue as well as red, so although I can't tell anything about its morphology I'm going to hazard a guess it's a QSO rather than an ETG. Really should be followed up!

  Posted August 15, 2014 9:09 PM

• by Dolorous_Edd

  Unfortunately, can't give an ID for this thing

  NVSS J095040+731547 the only thing I found

  Or could be 2MASX J09484033+7313244 and NVSS J094837+731235

  Besides that perfectly visible in VLSSr

  BTW can somebody explain the significance of visibility at lower-frequencies and higher frequencies?
  

  Posted August 19, 2014 5:47 PM

• by 42jkb scientist, admin in response to Dolorous Edd's comment.

  BTW can somebody explain the significance of visibility at lower-frequencies and higher frequencies?

  The radio emission we see in RGZ comes from synchrotron emission (relativistic electrons accelerating around magnetic field lines). As the electrons accelerate, they radiate. Depending on the age of the emission, energy is lost as the object gets older. Low frequency emission is an indicator of the past so we can "see" how the object has changed over time.

  Posted August 20, 2014 7:28 PM

• by JeanTate in response to Dolorous Edd's comment.

  Curious set of sources; check out J083612.94+264813.6 - a triple?

  Posted August 21, 2014 8:16 PM

• by JeanTate in response to Dolorous Edd's comment.

  Check out J233300.93+010045.7 - a single object or 3 unrelated sources?

  Posted August 22, 2014 10:31 PM

• by Dolorous_Edd

  Host seems to be 2MASX J00004378+1216080 aka SDSS J000043.82+121608.3

  One object?

  

  Sort of green glowing on the sides? Frankly, looks like an artifact, but will mention it anyway

  

  Edit 17/09/14*

  Appeared in RGZ

  http://radiotalk.galaxyzoo.org/#/subjects/ARG0002vmo

  Posted September 3, 2014 9:42 AM

• by Dolorous_Edd

  Outside VLA FIRST 😦 so the host is anyone's quess ( if its one object )

  But could be

  

  SDSS J233512.35+174150.3

  

  Posted September 3, 2014 10:07 AM

• by Dolorous_Edd

  Could be a triple

  Host candidate SDSS J011557.24+250720.3 aka
  2MASXi J0115572+250720

  "Lobes" are visible in VLSSr

  

  Posted September 8, 2014 7:21 AM

• by 42jkb scientist, admin in response to Dolorous Edd's comment.

  Does point to a triple.

  Posted September 9, 2014 2:28 AM

• by Dolorous_Edd

  Maybe triple

  The host could be SDSS J225356.30-070638.6 aka 2MASX J22535630-0706383

  Judging from FIRST maps, host seems to be hourglass by itself

  Visible in VLSSr

  

  Posted September 10, 2014 9:17 AM

• by Dolorous_Edd

  Looks like a double or even triple ( sort of a bridge can be seen in the NVSS image )

  "Lobes" are visible in VLSSr

  At 00:22:25.56 -08:18:50.1 there is a weak signal in FIRST image, that could be a core

  

  Yet, there is one problem

  Red circles are SDSS photometric objects , blue/pink are WISE sources

  

  Posted September 10, 2014 9:47 AM

• by Dolorous_Edd

  OFFTOPIC

  By the way, meet the J1420--0545 ( published size 4.69 Mpc )

  AFAIK The Largest Radio Galaxy Ever Discovered

  

  Will RGZ find any larger?

  Stay tuned!

  Posted September 11, 2014 10:52 AM

• by 42jkb scientist, admin in response to Dolorous Edd's comment.

  HA! I was just looking for this reference for the RGZ description paper. Thanks for pointing this out.

  And yes, stay tuned as we are going through the giants you have found!

  Posted September 15, 2014 6:54 AM

• by Dolorous_Edd

  Does anyone have an idea about the origin of this emission at 17 54 29.71 +62 36 50.4

  

  Possible ID's

  NVSS J175441+623737

  surely 2MASX J17542537+6233563

  is not related?

  Posted September 15, 2014 8:50 PM

• by JeanTate in response to Dolorous Edd's comment.

  I agree:

  

  Boilerplate: SDSS image per http://skyservice.pha.jhu.edu/DR10/ImgCutout/getjpeg.aspx, FIRST (red) contours derived from the FITS file produced using SkyView with Python code described in this RGZ Talk thread. Image center (J2000.0) is the galaxy SDSS J102103.08-023642.6; 'z_ph' its 'SDSS' photometric redshift.

  Posted September 21, 2014 2:14 AM

• by Dolorous_Edd

  Maybe triple, maybe chance aligment

  Host could be SDSS J231201.27+135655.9

  aka 2MASX J23120123+1356563

  "Lobes" are visible? in GB6 survey and S "lobe" visible in VLSS

  

  N "lobe" could be a double from another source

  Posted September 30, 2014 8:59 AM

• by Dolorous_Edd

  Maybe triple with diffuse lobes up to 15'

  Center seems to be at 08 34 23.57 -21 19 40.0

  Nothing specific other than GALEXASC J083424.71-211944.8 and NVSS J083424-211936

  NVSS o.3 degree, "Lobes" seems to be visible in VLSSr

  

  Posted October 2, 2014 6:42 AM

• by Dolorous_Edd

  Maybe a triple

  Possible host SDSS J114759.21+142536.7

  

  Posted October 18, 2014 2:44 PM

• by Dolorous_Edd

  Maybe triple

  Possible host SDSS J161242.06+431319.8 - 1237659330850128152

  

  Posted October 22, 2014 6:44 AM

• by Dolorous_Edd

  Maybe triple

  Possible host SDSS J155500.39+365337.4

  

  Posted October 22, 2014 6:53 AM

• by Dolorous_Edd

  SDSS J154817.75+072554.8 - triple ( pics later

  Posted October 28, 2014 2:09 PM

• by Dolorous_Edd

  Maybe triple, host likely 2MASX J09251274-0114412 aka SDSS J092512.73-011441.2

  

  Posted November 1, 2014 7:26 PM

• by Dolorous_Edd

  Maybe triple

  Possible host 2MASX J16135267+5615595 or SDSS J161352.64+561559.9

  

  Posted November 12, 2014 7:20 AM

• by ivywong scientist, admin

  Very nice example this latest one!

  Posted November 18, 2014 5:38 AM

• by JeanTate in response to Dolorous Edd's comment.

  The host is likely 2MASX J02351268+1011467

  It would seem so:

  

  NVSS contours on Luptonized DSS2 composite image.

  The image in this post was created from sources, and using methods, described in this RGZ Talk post. The object at the center of the image is 2MASX J02351268+1011467

  Posted December 9, 2014 10:40 PM

• by JeanTate in response to Dolorous Edd's comment.

  I can't find a likely host either. 😦

  Here's an overlay image - VLSSr in red, NVSS in cyan - on a Luptonized DSS2 JPEG, centered on 2MASX J09484033+7313244:

  

  I initially thought that the NVSS emission to the W might be a W "lobe", and that 2MASX J09484033+7313244 might be the host of an asymmetric restarted doublelobe, but apparently not.

  The center of this image, 1AXG J095019+7314, is an x-ray source. Unfortunately, it does not seem to be sufficiently near either an optical (DSS2) source, or the faint NVSS peak (in cyan); i.e. testing a 'triple' hypothesis:

  

  A bit of a mystery then, eh?

  The images in this post were created from sources, and using methods, described in this RGZ Talk post. The objects at the center of the images are 2MASX J09484033+7313244 (top) and 1AXG J095019+7314 (bottom).

  Posted December 9, 2014 11:30 PM

• by DocR scientist

  Classified as giant by 2013MNRAS.430.2090S Strom, R. G.; C... et al... 4C73.08

  Posted December 12, 2014 8:06 PM

• by JeanTate in response to Dolorous Edd's comment.

  NVSS contour overlay, on a Luptonized DSS2 image:

  

  An offset #restarted #nat with z_sp 0.028 host NGC 6512? Or perhaps (not offset) host GALEXASC J175450.37+623819.3? Or something else entirely?

  I'll do a zoomed-in, centered on GALEXASC J175450.37+623819.3 pair of images later (Luptonized DSS2 and WISE).

  The image in this post was created from sources, and using methods, described in this RGZ Talk post.

  Posted December 14, 2014 11:25 PM

• by ivywong scientist, admin

  Wow! These are brilliant @JeanTate ! There's so much diffused radio emission!

  Posted December 15, 2014 2:49 AM

• by Dolorous_Edd in response to JeanTate's comment.

  NGC 6512?

  Yep, it is
  see http://arxiv.org/pdf/astro-ph/0102034v1.pdf

  and http://arxiv.org/PS_cache/astro-ph/ps/0102/0102034v1.fig2_20.gif

  Posted December 15, 2014 12:39 PM

• by JeanTate in response to DocR's comment.

  I don't seem to be able to get a copy of this paper (it seems to be behind a paywall). Is there any way a free copy could be made available to zooites?

  Posted December 15, 2014 8:54 PM

• by JeanTate in response to Dolorous Edd's comment.

  Yep, it is see http://arxiv.org/pdf/astro-ph/0102034v1.pdf

  Here's the relevant text:

  J1754+626 (NGC 6512): another wide angle tail source, with an extension of low brightness emission in the southern direction. The radio structure is very complex, with sharp bends and kinks, most likely produced by the interaction with the external medium. At 4.9 GHz we observe the core component and two jets in the E-W direction. The eastern jet beds sharply towards the west, most probably due to the existence of a strong intergalactic wind.

  The contour image?

  and http://arxiv.org/PS_cache/astro-ph/ps/0102/0102034v1.fig2_20.gif

  Well, on my screen it's of such poor quality as to be almost useless. Is there any way to obtain something that is, visually, meaningful? I'm quite interested in trying to understand why there's such a large (apparent?) offet between the optical and NVSS (my own contour overlay images coming up).

  Posted December 15, 2014 9:02 PM

• by JeanTate in response to Dolorous Edd's comment.

  Now here's a curious coincidence (or not); my bold:

  [DocR] Classified as giant by 2013MNRAS.430.2090S Strom, R. G.; C... et al... 4C73.08

  [Dolorous Edd] Yep, it is [NGC 6512] see http://arxiv.org/pdf/astro-ph/0102034v1.pdf [Lara+ 2001]

  Here's an interesting quote from Lara+ (2001):

  We neither present maps of the sources which we have not observed: the giant radio galaxy J0949+732 (4C+73.08; J ̈agers 1986; Mack 1996; Leahy et al. 1998

  You really have a fantastic eye for picking interesting radio sources, Dolorous Edd! 😄

  Posted December 15, 2014 9:09 PM

• by JeanTate in response to ivywong's comment.

  Thanks Ivy.

  If RGZ scientists ever get around to considering the sort of 'next step' for us robots slaves click workers zkChris writes about in his 2013 blog entry Optimizing for interest : Why people aren’t machines, it might be interesting to ponder how Dolorous Edd's fantastic track record in identifying interesting NVSS sources purely from eyeballing the data converted into rather compressed form could be leveraged.

  Posted December 15, 2014 9:18 PM

• by c_cld in response to JeanTate's comment.

  The contour image?

  NGC6512

  http://ned.ipac.caltech.edu/img/2001A+A...370..407L/LCF2001J1754+626:I:21cm:lcf2001.jpg

  

  NED object is [LCF2001] J1754+626; Reference is 2001A&A...370..409L

  Fig. 2. VLA maps of 79 radio galaxies from the sample. A label "L" or "C" by
  the source name indicates the frequency of observation, namely 1.4 or 4.9 GHz,
  respectively. Dotted lines help to identify equivalent regions in different
  frequency maps. The core position is marked with an arrow on each map. The
  angular scale of the 1.4 GHz maps has been kept fixed, except for objects too
  extended to properly fit in a single page. In those cases, the map size is
  reduced by a factor of 2 or 3 (marked with "1/2" or "1/3", respectively). Map
  parameters are displayed in Table 3. Contours are separated by factors of
  {sqrt}2.

  Posted December 15, 2014 10:00 PM

• by JeanTate in response to JeanTate's comment.

  Thank you very much, C_cld! 😄

  I'll do a zoomed-in, centered on GALEXASC J175450.37+623819.3 pair of images later (Luptonized DSS2 and WISE).

  Here's the Luptonized DSS2 version:

  

  And a Luptonized WISE version, using bands 1 (3.4μ), 3 (12μ), and 4 (22μ):

  

  And the Luptonized DSS2 with WISE band 4 (22μ) added as lime contours:

  

  Yes, NGC 6512's nucleus is a strong, point-like IR source (at the WISE resolution), but the NVSS contours do seem to be more consistent with GALEXASC J175450.37+623819.3 as the host (the optical/WISE and radio offsets seem to be well rather too much to be due to NVSS' poor resolution).

  To be added shortly: an overlay image, on DSS2, with WISE band 1 (3.4μ; yellow) and NVSS contours:

  

  How likely is it that the host is not, in fact, NGC 6512, but rather the star-like GALEXASC J175450.37+623819.3?

  The images in this post was created from sources, and using methods, described in this RGZ Talk post. The object at the center of the image is GALEXASC J175450.37+623819.3.

  Posted December 15, 2014 10:50 PM

• by JeanTate in response to JeanTate's comment.

  Here's a zoomed-in NVSS contour overlay on a Luptonized DSS2 image, centered on z_sp 0.058 VII Zw 292:

  

  And on a Luptonized WISE one (bands 1 (3.4μ), 3 (12μ), and 4 (22μ)):

  

  The images in this post were created from sources, and using methods, described in this RGZ Talk post. The object at the center of the images is VII Zw 292.

  Posted December 16, 2014 12:00 AM

• by ivywong scientist, admin in response to JeanTate's comment.

  Hi @JeanTate,
  Thanks for your suggestion for the next step.

  In the initial version of RGZ, we had a much more complicated exercise for the participants but our initial testing on "real people" informed us that the majority of the participants would find it too tedious and lose interest. This was why we kept the main interface here as simple as possible. We are very grateful that we have many superusers (yourself included) who go beyond the main interface and dig deeper. I think we have a nice balance/compromise in difficulty settings to cater for as many participants as possible. As we are still neck-deep in processing the data from our current project, we currently have not thought too much about the next phase yet.

  Cheers,
  Ivy
  ps/ the RGZ participants are not robot clickers. That is the point of the project 😉

  Posted December 16, 2014 2:53 AM

• by JeanTate in response to C_cld's comment.

  I thought I'd test my 'slide scraping' skills*, and also see whether my Python code could handle something rather different as a 'canvas', so ...

  

  That's NVSS contours in red overlayed on a downloaded and cropped copy of the image in C_cld's post. I worked out the scale and image center by measuring pixel locations in the .jpg image (I'm sure I could do better by reading the paper carefully), and I had to make a few tweaks to my Python code (if this were serious, I'd obviously have to make quite a few more). On the whole, though, it's not bad, eh?

  What about overlaying WISE band 1 (3.4μ) contours?

  

  Well, the big black arrow seems to point to the center of the WISE contours, which we know is the nucleus of NGC 6512.

  So what can we conclude? I am far from sure, but there does seem to be an apparent offset between the two sets of radio contours, at least near NGC 6512 ...

  *most recently used - infamously? - by the BICEP2 team

  The image in this post was created from sources, and using methods, described in this RGZ Talk post. The NVSS and WISE data are centered on (268.6045, 62.5995)

  Posted December 16, 2014 5:17 PM

• by JeanTate in response to JeanTate's comment.

  'Zooming out' proved easier than I had expected. NVSS contours in red:

  

  The image in this post was created from sources, and using methods, described in this RGZ Talk post. The NVSS data are centered on (268.6045, 62.5995)

  Posted December 16, 2014 7:03 PM

• by Dolorous_Edd

  NGC 315, a well known source

  

  A better looking image

  

  http://www.mpa-garching.mpg.de/HIGHLIGHT/2002/highlight0203_e.html

  Posted January 20, 2015 8:35 AM

• by Dolorous_Edd

  Maybe a triple

  Possible host SDSS J132741.32+574943.4 - 1237658310797492430

  

  Posted March 14, 2015 1:14 PM

• by Dolorous_Edd

  Fail to grasp what exactly going on here

  WAT or few radio galaxies?

  

  Host maybe SDSS J081746.69+544203.1

  Posted April 28, 2015 12:57 PM

• by DocR scientist

  Looks to me like a very unusual WAT, with an extra unrelated radio galaxy to the southeast. In the NVSS image, it looks like the SE galaxy is the core, but it's a separate source. Red contours are NVSS over the FIRST image. Right image is WISE band 1.

  Posted May 3, 2015 3:53 PM

• by Dolorous_Edd

  Thanks DocR!

  Back to the topic

  http://radiotalk.galaxyzoo.org/#/subjects/ARG00028fm

  Personally I got the impression that this could be a triple source ~12.4' across

  With possible host SDSS J144445.86+220638.1

  

  Posted May 8, 2015 8:52 AM

• by JeanTate in response to Dolorous Edd's comment.

  Here's my contour overlay:

  
  

  Looks like SDSS J114759.21+142536.7 is indeed a host ... but of the apparent NVSS #doublelobe? The S lobe, in FIRST, looks like a #triple; if so, what's the host? And is the N lobe also possibly unrelated? More overlays needed, I think.

  The image in this post was created from sources, and using methods, described in this RGZ Talk post. The object at the center of the image is SDSS J114759.21+142536.7

  Posted May 21, 2015 12:18 PM

• by JeanTate in response to Dolorous Edd's comment.

  Outside the FIRST footprint, sadly.

  
  

  SDSS J233512.35+174150.3 could, I guess, be the host of the obvious NVSS #doublelobe ...

  The image in this post was created from sources, and using methods, described in this RGZ Talk post. The object at the center of the image is SDSS J233512.35+174150.3

  Posted May 21, 2015 12:22 PM

• by JeanTate in response to Dolorous Edd's comment.

  This one is quite a challenge, and I'll be doing some more overlays later.

  Here is an NVSS contour overlay, using DSS2 Red as canvass (for some reason that I do not yet understand, instead of black-n-white, I got an intensity colorized version!):

  

  Doesn't seem much doubt that, radio morphology-wise, it's a #restarted (three times?) #triple. But without knowing what the host is, impossible to say if it's a #giant.

  Next I'll zoom in on the central radio source, hoping to get a better idea of what the host is.

  The image in this post was created from sources, and using methods, described in this RGZ Talk post. The center of the image is (128.6000, -21.3278)

  Posted May 21, 2015 12:28 PM

• by JeanTate in response to JeanTate's comment.

  
  

  The N lobe does not seem to be a #compact, more like a #lobe; however, its 'ridgeline' doesn't point back to the (supposed) host.

  
  

  This is the S lobe. Yes, there is an SDSS PO, a STAR, in the center ... it's very faint, brightest in the z-band. But it's not at the center of what looks very much like a FIRST #triple. I had a quick look at WISE, but there seems to be no obvious source near the center of the FIRST emission either. So, is this a particularly distant #ifrs? Or a real #lobe, but of strange morphology?

  Whatever it is, Dolorous Edd sure seems to be able to find interesting objects! 😃

  The images in this post were created from sources, and using methods, described in this RGZ Talk post. The objects at the center of the image are SDSS J114754.57+142757.8 (top) and SDSS J114802.31+142239.7 (bottom).

  Posted May 21, 2015 2:27 PM

• by JeanTate in response to JeanTate's comment.

  The host of the NVSS source does not seem to be a GALEX source; here's a zoomed-in overlay, with GALEX NUV as canvass (again, intensity colorized rather than black-n-white):

  

  However, a WISE 12μ object does seem to be the host (the canvass is the WISE band 3; I don't have a designation for this object):

  

  Definitely worth following up, IMHO ...

  The images in this post were created from sources, and using methods, described in this RGZ Talk post. The center of the image is (128.6000, -21.3278).

  Posted May 21, 2015 2:34 PM

• by ivywong scientist, admin

  Thanks @JeanTate.

  Posted May 22, 2015 2:14 AM

• by Dolorous_Edd

  NVSS (left) / FIRST ( right )

  A bit wierd, 2 different compact sources have sort of connection visible in NVSS

  Likely chance aligment of 3 diff RG (SDSS J132041.09+455122.8 and SDSS J132023.66+454934.0, and say SDSS J132038.73+454943.2 to the boot ) , but still looks wierd

  

  SDSS J132041.09+455122.8

  SDSS J132023.66+454934.0

  Posted June 28, 2015 11:05 AM