Brown transient?
-
Might the brown object at top right, in center in below images, be a transient, or merely too faint for SDSS?
DECaLS DR1
http://imagine.legacysurvey.org/?ra=320.0077&dec=1.5099&zoom=16&layer=decals-dr1jClearly visible in DECaLS Residuals
SDSS DR9
http://skyserver.sdss.org/dr9/en/tools/chart/navi.asp?ra=320.00732853&dec=1.50974777
DECaLS DR2http://legacysurvey.org/viewer/?ra=320.0077&dec=1.5099&zoom=13&layer=decals-dr2
Posted
-
by Budgieye moderator
DECaLS shows infrared light better than SDSS. Do you think it still might be there in the SDSS, just very dim?
Posted
-
I'm not sure. If i take the brown object to the right as reference it seems it should be visible in SDSS. Also it's not there in the inverted SDSS image, so i'm thinking ( hoping) it is really not there in SDSS, making it a slow transient.
But not sure, and as far as my skills go can't find out for sure ( small body tool jpl/ NASA, other surveys etc.)
Posted
-
by c_cld
SDSS z-band and DECaLS DR2 z-band pics are very similar which rule out transient object.
Colored images are stacks of SDSS gri bands versus DECaLS grz bands.
Posted
-
So its visible in SDSS z band, which is not used for the stacked color image?
Thanks!
Posted
-
No access to SDSS z band yet (FITS files), so if someone can get an image of it with the transient present would be great.
So far nothing also nothing in PanSTARRS, or at most a tiny point source but definitely not as bright as in DECaLS. And it's probably not an asteroid or supernova, so still an interesting object.
PanSTARRS DR1 image z i g bands (object off-center)
Posted
-
Hmm there does seem to be a faint source but only in SDSS z band, must be a very specific ir emission nothing to see in other bands or PanSTARRS-1 bands (well maybe looking from a distance a small point source).
So not a transient but a galaxy that only emits in ir instead of 'visible' wavelengths (?).
Posted