SDSS J142644.22+271151.3 - A green pea?
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Dolorous_Edd
Found it in RGZ ARG0001w5e
Looks awfuly like green pea, also has z_sp = 0.356
SDSS J142644.22+271151.3 - 1237665350243647756
It also the source of compact radio emission in FIRST Peak flux (mJy) ~2.50 ± 0.26
SDSS / FIRST
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Listed as supernova SN 1991W in NED, but still visible in below DECaLS DR2 image? (incomplete)
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Dolorous_Edd
in response to Ghost_Sheep_SWR's comment.
Listed as supernova SN 1991W in NED
Don't think it is Sn
DECaLS DR2 image
Yes, I saw this, likely imaged in single band, most likely z-band since it mapped to red in decals
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Even without image dates, doesn't the average time between SDSS (max 2008?) and DECaLS (2014-2015?) automatically rule out a Sn?
Spectrum
http://skyserver.sdss.org/dr12/en/get/SpecById.ashx?id=6775791635248377856Posted
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Dolorous_Edd
in response to Ghost_Sheep_SWR's comment.
It is visible even in DSS which waaayyyy older
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Weird that it's actually listed as Sn...
MJD 5.314832E4 for all bands; 05-23-2004 if im correcthttp://cas.sdss.org/dr4/en/tools/explore/obj.asp?ra=216.683733&dec=27.196555
Nice find! 😃. Really curious how it got to be listed as Sn though, this isn't an automated process right?
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Lol already known not to be a Sn in 1991;
http://www.cbat.eps.harvard.edu/iauc/05200/05270.html#Item1
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Rick_Nowell
in response to Ghost_Sheep_SWR's comment.
That's a very interesting spectrum for many reasons, but a unusually large magnesium flux suggests old stars. I've never seen such a huge magnesium flux before in a GP. GPs are thought to contain old stars, as Amorin et al. proved in their observations.
TYPE=STAR, need I write more?https://en.wikipedia.org/wiki/Pea_galaxy
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williamaskew
The SDSS image was taken on 05/13/2004
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Rick_Nowell
Three GPs have been observed using the GMRT and were found to have extremely high magnetic fields. I found the study mainly incomprehensible, but others might enjoy it. Certainly if there is a cache of GPs in RGZ, they could be grouped. I'm completely ignorant about RGZ.
https://en.wikipedia.org/wiki/Pea_galaxy#Radio_detection_of_Green_Peas
S. Chakraborti; N. Yadav; C. Cardamone & A. Ray (2012). "Radio Detection of Green Peas: Implications for Magnetic Fields in Young Galaxies". The Astrophysical Journal Letters 746 (1). arXiv:1110.3312v1. Bibcode:2012ApJ...746L...6C. doi:10.1088/2041-8205/746/1/L6.
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Dolorous_Edd
Were any of the GPs detected in FIRST without stacking??? I mean if you look at FIRST and you will clearly see that it is radio source?
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