Plume?
-
by bobk47
Double source
Posted
-
by JeanTate
For contour overlay images I have previously used Google Photo, Google Drive, and Dropbox. However, none of those now seems to allow the copy/pasting of an image! 😦 This one is from Shutterfly, and is clearly quite inferior. If anyone has a recommendation for a free image upload&share site ...
Is this the host, SDSS J103640.35+123338.7?
The other two hosts seem to be SDSS J103639.51+123326.2:
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 J103640.35+123338.7
Posted
-
by JeanTate in response to JeanTate's comment.
Thanks to Dolorous Edd's recommendation, Imgur seems to be OK. Here's the contour overlay image at close to original quality:
Posted
-
by sisifolibre
thanks Jean
the bridge shoud be from the BL Lac but, can be the spiral a compact radio source too? If the galaxy spiral is a source of radio, it would have his own contour lines inside the plume any case?
Posted
-
by JeanTate in response to sisifolibre's comment.
Hi sisifolibre,
I think that's a question for a radio astronomer; however my take is that FIRST's resolution is too poor to say anything certain (or even likely) re radio emission from the spiral.
It may be that there are observations of these two objects, at different wavelengths (frequencies) than FIRST (which is 1.4 GHz); if so, that may help.
My guess is that it's entirely possible that the spiral has either a point source radio emission (from its nucleus) and/or some star-formation in/throughout its disk, either or both of which could be contributing to what FIRST 'sees'. However, the gradient across the spiral's disk points to the BL Lac contributing significantly to the observed radio emission.
Posted
-
by ivywong scientist, admin
Hmm, so here is my 2 cents and intuition about this subject:
I think that we are seeing multiple radio sources here which have overlapped in our line-of-sight. I think that there are 3 separate radio galaxies here. BLLacs are compact sources because the jets are beamed in the direction towards us. I suspect that this BLLac's emission is being confused with an hourglass source in the background at higher redshifts and not related to the face-on spiral. And the 3rd source is the compact radio source being hosted by the red compact galaxy.
Posted