ARG0001q49, hourglass?
-
by ChrisMolloy
Here's ARG0001q49, which appears to be an #hourglass.
The contour overlay image in this post was created from sources, and using methods, described in this RGZ Talk
thread. First in red.A possible host for the emission appears to be SDSS J115525.57+300303.8, which has a z_sp=0.413 +/- 0.00011. This object has radio references in NED and Simbad, and an ALLWISE reference, ALLWISE J115525.58+300303.4. This galaxy is in the centre of the lobes.
There are radio references in NED and Simbad for SDSS J115525.90+300255.2, which has a z_sp=0.417 +/-0.00011. This object is positioned on the southern lobe. Whether this galaxy is the host of the emission is hard to discern.
Both these galaxies seem to have #red and #green #outflows, and appear to be a #g-pair, being at the same redshift.
As always, comments, suggestions, welcome.
Posted
-
by JeanTate in response to ChrisMolloy's comment.
If the SE galaxy is, in fact, more distant than the central one (as they're both apparently in the same cluster, a redshift difference of ~0.004 is too small to be useful), then radio from the hourglass host would pass through and around it, and its ISM may leave an imprint.
The outflows are curious; I wonder how real they are (i.e. not artifacts)?
Posted
-
by ChrisMolloy in response to JeanTate's comment.
The outflows are curious; I wonder how real they are (i.e. not artifacts)?
Hard to say. DECaLS and PanSTARRS aren't much help.
Posted