Stars which appear to be radio sources
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by JeanTate
Here in RGZ, our focus has been on radio sources associated with galaxies. However, stars are also radio sources, and just as we citizen scientists have discovered unusual "things extra-galactic", so we may also have come across unusual radio stars. There's a thread - Radio Stars - which discusses what we know about radio stars, why they are radio sources, and also what we don't know.
That's what this thread is about: if you find a radio source which seems to be associated with a star (rather than a QSO or AGN or galaxy), please tag them #radiostar and post a link here. If the star has an SDSS spectrum, and is given a spectral class (and a low redshift!), please tag them #specstar.
To kick this off, here is list of candidate radio stars, taken from the Radio Stars thread; note that this is far from complete.
ARG0000xj8: Dolorous_Edd, July 14 2017 11:08 AM
ARG0001lwh: antikodon April 20 2016 10:47 AM. Also discussed in the thread ARG0001lwh: #specstar?
ARG00009k4: Dolorous_Edd September 15 2017 9:07 AM
ARG0002m7n: Dolorous_Edd July 16 2017 1:52 PM. But as HAndernach notes, this is actually a QSO (the SDSS spectroscopic pipeline's automatic classification is wrong)
ARG0001z2q: Dolorous_Edd September 20 2017 8:51 AM
ARG0002890: Dolorous_Edd June 28 2017 2:34 AM
ARG0000enk: Dolorous_Edd October 15 2016 4:47 AM
ARG0001tz1: JeanTate March 5 2018 1:25 PM
ARG00003n0: Dolorous_Edd January 31 2017 8:16 AM
ARG0001srz: 958bacsal July 7 2016 2:09 PM
ARG0001qa5: JeanTate March 19 2017 4:38 PM
ARG0000tnc: Dolorous_Edd July 10 2017 5:31 PM
ARG0003c66: sisifolibre September 15 2017 7:42 PM
ARG0002ux7: Dolorous_Edd September 20 2016 4:18 PM
ARG00015wa: A1001 May 21 2017 2:41 PM
ARG00009mw: Dolorous_Edd September 18 2016 4:38 PM
ARG000167s: Dolorous_Edd March 30 2016 10:55 AM
ARG0003f5x: JeanTate May 5 2018 9:37 AMPosted
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by JeanTate
ARG000356z: sisifolibre May 24 2018 12:13 PM
Posted
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by sisifolibre
This subjects are from my old colection... Candidates signed with * are wich I think are the best
https://radiotalk.galaxyzoo.org/#/subjects/ARG000356z SDSS J230056.01+091403.8
SDSS J230056.01+091403.8 -- Quasar On Simbad.
. GAIA id 2714693727942891008
ARG0000s7l double, without core emission but very well aligned and centered with SDSS J083417.19+463313.4
ARG0001nrn compact double host SDSS J140339.49+310912.4 WISE Blazar-like
*ARG0002d9f compact elongated source, host seems to be star with spectra SDSS J121051.55+194950.0
*ARG0001l21 elongated compact (plume?) signed by @DolorousEdd host seems to be star with spectra SDSS J160628.19+322710.7
*ARG00020rw compact elongated, host seems SDSS J091437.75+250837.8
*ARG000319b double signed by @DolorousEdd SDSS J205803.95+103143.3
*ARG0000kay hourglass signed by @leonie_van_vliet SDSS J155326.66+503342.8
Posted
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by sisifolibre
ARG0002v1y SDSS J101601.40+122142.0 listed on "A Sample of Candidate Radio Stars in First and SDSS"
Posted
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Hi sisifolibre,
ARG000356z is a quasar after all, unfortunately.
ARG0000s7l IS a star but it overlaps a galaxy close enough that I'd bet it's the galaxy instead.
ARG0001nrn is a quasar
ARG0002d9f is also a star but appears either overlapping a faint nebulous object (to the upper left) or is nebulous itself.
ARG0001l21 is too elongated for my liking. Probably another overlap.
ARG00020rw appears to be a good candidate. added to candidate list!
ARG000319b overlaps a galaxy
ARG0000kay seems spectrally consistent with a G8 star, although it doesn't LOOK like that at all. Regretfully added to the list.
ARG0002v1y also seems good.Posted
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by sisifolibre
Thanks for the feedback!
I was thinking the same for ARG0000kay, and @HAndernach has signed host can be AllWISE J155326.78+503342.6
Posted
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by sisifolibre
There subjects are IMHO the best candidates from the @Dolorous_Edd collection https://radiotalk.galaxyzoo.org/#/collections/CRGS0000q1
ARG0003cgu SDSS J123405.96+063925.9 the yellow features suggest overlap
ARG0003hz1 SDSS J153032.25+045049.2 ~2" missaligned with center of FIRST emission
ARG00026w1 SDSS J124944.96+224242.8
ARG0002dzg double with #specstar in one lobe, but without any other best source SDSS J095327.79+192817.1
ARG0002smv double with star in one lobe, but without any other better source SDSS J123248.77+131209.0
Posted
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by sisifolibre
From the collection of @Antikodon https://radiotalk.galaxyzoo.org/#/collections/CRGS0000f3
ARG00026hm #triple ~1" misaligned #specstar
ARG0001e1o ~2" misaligned #specstar ?
ARG000348j #triple Have a "worth a follow-up!" from @HAndernach
Posted
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by Dolorous_Edd
This one is classic
https://radiotalk.galaxyzoo.org/#/subjects/ARG0001rn6
SDSS J170008.72+291903.7 - 1237661388158664899
https://radiotalk.galaxyzoo.org/#/boards/BRG0000006/discussions/DRG0000clm
https://radiotalk.galaxyzoo.org/#/boards/BRG0000002/discussions/DRG0000dgo
Posted
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by sisifolibre
Seems that @HAndernach agree this subjects are #specstar and worth follow up
https://radiotalk.galaxyzoo.org/#/subjects/ARG0002te7
https://radiotalk.galaxyzoo.org/#/subjects/ARG0003e7b
Posted
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by sisifolibre
A clear #triple, but without spectra, nothing in SIMBAD, etc. https://radiotalk.galaxyzoo.org/#/subjects/ARG0000091
Posted
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by sisifolibre
https://radiotalk.galaxyzoo.org/#/subjects/ARG0002hjz shows compact emission, the object have star spectra
https://radiotalk.galaxyzoo.org/#/subjects/ARG0003qnk shows double emission, without spectra
https://radiotalk.galaxyzoo.org/#/subjects/ARG0000tvj uncertain double, but without better candidate to host than that object with star spectra
https://radiotalk.galaxyzoo.org/#/subjects/ARG00037h8 SDSS J160115.33+082612.9 have spectra, and is listed in 2009ApJ...701..535K "A Sample of Candidate Radio Stars in First and SDSS"
Posted
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Image ARG0002890; So what IS a specstar?
Posted
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by sisifolibre
#specstar is a tag for stars thas seems to show radio emission and have spectra in SDSS
Posted
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by leonie_van_vliet in response to sisifolibre's comment.
Thanks Victor!
A "#specstar is a tag for stars that seems to show radio emission and have spectra in SDSS "
Will add this to my #Tag collection!Kind greetings!
Leonie...
Posted
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by sisifolibre
You are welcome Leonie 😃
https://radiotalk.galaxyzoo.org/#/subjects/ARG0001bfh Shows a faint double emission (real or artefact?) very near the radio star candidate and another double lobes more consistent and far. Without spectra.
Posted
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by sisifolibre
https://radiotalk.galaxyzoo.org/#/subjects/ARG0000m1w clear star with spectra, it have extended emission: tadpole shape and perhaps a lobe to ~1.6'
Posted
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by sisifolibre
https://radiotalk.galaxyzoo.org/#/subjects/ARG0002jdu star with spectra, seems to be host of a elongated disturbed radio lobe, AllWISE identify the IR source ~1.6'' off center of optical source
https://radiotalk.galaxyzoo.org/#/subjects/ARG0001nqo #doublelobe host seems star, without spectra
https://radiotalk.galaxyzoo.org/#/subjects/ARG00028pm #doublelobe host seems star, without spectra
https://radiotalk.galaxyzoo.org/#/subjects/ARG0003bc5 Rado lobes have a #hybrid shape, host seems star, without spectra
Posted
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by sisifolibre
https://radiotalk.galaxyzoo.org/#/subjects/ARG00029s1 #Compact radio emission, looks like QSO colours, but have SDSS star spectra class= F2.
https://radiotalk.galaxyzoo.org/#/subjects/ARG0001z3t #hybrid similar emission #radiostar, without spectra, around ~2" missaligned
Posted
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by zutopian
Candidate:
https://radiotalk.galaxyzoo.org/#/subjects/ARG0001fp9
Posted
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by sisifolibre
https://radiotalk.galaxyzoo.org/#/subjects/ARG000293h "VLASS shows a faint radio core about 1.5"NW of the star (which IS a star with parallax and PM by GaiaDR2)" by @HAndernach
https://radiotalk.galaxyzoo.org/#/subjects/ARG0001quf #specstar "oops... another double-lobed radio star? SDSS J073757.18+294211.9, r'=18.33, F5 star 46+-5 km/s, no obvious AGN colors in WISE"
by @HAndernachPosted
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by sisifolibre
From @JeanTate
https://radiotalk.galaxyzoo.org/#/subjects/ARG0003j94 #radiostar a little offset
https://radiotalk.galaxyzoo.org/#/subjects/ARG000309a #radiostar without spectrum
Posted
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by zutopian
Candidate:
https://radiotalk.galaxyzoo.org/#/subjects/ARG0002acq
Posted
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by zutopian
Jean Tate's candidate:
https://radiotalk.galaxyzoo.org/#/subjects/ARG000344t
Posted
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by zutopian
Candidate:
https://radiotalk.galaxyzoo.org/#/subjects/ARG0001g99
http://skyserver.sdss.org/dr14/en/tools/explore/obj.aspx?id=1237665024907804791
Posted
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by zutopian
Candidate:
https://radiotalk.galaxyzoo.org/#/subjects/ARG0000pa1
http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237658205578068139
Posted
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by antikodon
https://radiotalk.galaxyzoo.org/#/subjects/ARG0001sdz
Posted
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by zutopian
Candidate:
https://radiotalk.galaxyzoo.org/#/subjects/ARG0001h3l
http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237662685756260410
On the RGZ image the star is off centre. So the star might not be the optical counterpart, but there is no close object visible (Photometric Obj isn't visible) in SDSS.
Posted
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by zutopian
Candidate:
https://radiotalk.galaxyzoo.org/#/subjects/ARG000109i
http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237665582183874688
Discussion:
https://radiotalk.galaxyzoo.org/#/boards/BRG0000002/discussions/DRG0000qgk
Posted
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by zutopian
Candidate:
https://radiotalk.galaxyzoo.org/#/subjects/ARG0001fpo
I don't know, which of below objects (object type: star) corresponds to the radio source.:
http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237674289684283786
http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237674289684284374
http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237674289684284191
Posted
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by Dolorous_Edd
ARG0000bir - https://radiotalk.galaxyzoo.org/#/subjects/ARG0000bir
SDSS J171253.16+552816.2 - 1237651211214782765
Posted
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by sisifolibre
https://radiotalk.galaxyzoo.org/#/subjects/ARG0002iwc Slighty offset, Plx=0.3167, e_plx 0.0628. Without spectra
https://radiotalk.galaxyzoo.org/#/subjects/ARG0003qnu #double SDSS J083638.89+013728.2 seems well aligned, without spectra, without PLX or proper motion in Gaia DR1
Posted
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by zutopian
Star with spikes:
https://radiotalk.galaxyzoo.org/#/subjects/ARG00022ly
http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237661465994068142
Posted
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by zutopian
Two candidates on the same image:
https://radiotalk.galaxyzoo.org/#/subjects/ARG0003czd
http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237661064407286101
http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237661064407285800
Posted
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by zutopian
https://radiotalk.galaxyzoo.org/#/subjects/ARG00002ey
http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237651252566097960
Posted
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by zutopian
https://radiotalk.galaxyzoo.org/#/subjects/ARG00025v3
http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237667736122163226
Posted