ARG0003pjj - one host, or two?
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by
JeanTate
The W radio source coincides with the nucleus of z_sp 0.158 SDSS J110845.48+020240.8, which the SDSS automated spectroscopic pipeline calls a "STARFORMING BROADLINE QSO". No surprise, being so radio-bright, that NED has 60 references ... but almost all are surveys. Its morphology, per GZ1, is "uncertain"; at the very least I think we can agree that it's NOT a boring elliptical:
The E radio source, which is actually brighter, seems to coincide with a rather (optically) faint extended blue-ish blob, z_ph 0.450±0.2118/0.175±0.1302 (i.e. "no clue!") SDSS J110846.27+020242.7:
So, is this two quite independent sources? or one? If one, which optical object is the host?
To answer WizardHowl's excellent question ("is this a quenched galaxy spectrum?"), no, because there's essentially no 'increasing Balmer absorption' ... but maybe a scientist with intimate knowledge of K+A objects could chime in?
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 J110845.48+020240.8; "z_sp" its SDSS spectroscopic redshift.Posted
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by
JeanTate
in response to JeanTate's comment.
Having now spent quite a bit of time producing FIRST contour overlays, particularly of odd-looking hosts, I come back to this one as being doubly odd.
Yes, it's a big universe, and strange alignments certainly do exist; however, the apparent host in ARG0002gbx - SDSS J120312.94+182322.0 - also seems to be a small, faint blue blob:
Thoughts, anyone?
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 J120312.94+182322.0.
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