ARG00033ho: weird, just weird
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by JeanTate
There's no doubt that zph 0.104±0.008 SDSS J221732.38+094920.3 is the (or a) host.
But the NVSS and FIRST cutouts are ... strange:
OK, so FIRST is behind the times; the FIRST data RGZ used is more recent than that from third.unllnl.org, which explains why most of it is blank.
The N lobe, in the ARG FIRST overlay image, looks quite like a degraded copy of the central+S source; is it, in fact, an #artifact?
In NVSS, it seems that the FIRST radio emission is embedded in a broader source, with something like a distorted version of the main, #doublelobe-like emission to the SW ... a different artifact? or a separate, relatively faint, diffuse, source which FIRST is blind to?
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by ivywong scientist, admin
FIRST typically resolves out diffused emission that is picked up by NVSS. That's the usual trade-off in interferometry, if you require small angular resolutions then you're also less sensitive to large angular scales. I think that this is a subject with multiple radio galaxies.
The extra detection from NVSS may come from : SDSS J221726.91+094840.5 or SDSS J221726.87+094832.8
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by JeanTate in response to ivywong's comment.
Thanks.
A contour overlay image - NVSS and FIRST contours on an SDSS canvass - may help ...
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