Galaxy Zoo Talk

Galaxy with weird thing

by SauronCthulhu

What's the brown thing?

Posted October 20, 2017 12:38 AM
by Budgieye moderator

Welcome SauronCthulhu.

Yes, this is unusual. Very red. Visible only in far red or infrared. Maybe a brown dwarf star? or a very distant quasar.

You may have discovered a new dwarf star. I'l re-post this in backyard worlds, they are looking for new dwarf stars.

https://www.zooniverse.org/projects/marckuchner/backyard-worlds-planet-9/talk/694/458759

It is so dim that it is not easily visible in SDSS.

SDSS

http://skyservice.pha.jhu.edu/DR9/ImgCutout/getjpeg.aspx?ra=177.60394219&dec=1.02868433&scale=0.049515875&width=512&height=512&opt=&query=

http://skyserver.sdss.org/dr9/en/tools/explore/obj.asp?ra=177.60402712&dec=1.02870797

ra, dec
177.6027,1.0284

not an object in SDSS

http://legacysurvey.org/viewer/jpeg-cutout?ra=177.6027&dec=1.0285&zoom=16&layer=decals-dr3

visible in DECaLS

nothing DECaLS/UNWISE, too small

http://legacysurvey.org/viewer?ra=177.6027&dec=1.0285&zoom=14&layer=unwise-neo2

http://legacysurvey.org/viewer?ra=177.6027&dec=1.0285&zoom=14&layer=unwise-neo2

too dim for IRSA

http://irsa.ipac.caltech.edu/applications/finderchart/#&id=Hydra_finderchart_finder_chart&projectId=finderchart&UserTargetWorldPt=177.60394219;1.02868433;EQ_J2000&subsize=0.195556&sources=DSS,SDSS,2MASS,IRIS,WISE&DoSearch=true

http://skyservice.pha.jhu.edu/DR12/ImgCutout/getjpeg.aspx?ra=177.604021821476&dec=1.02870085233725&scale=0.2&opt=IGPO&width=512&height=512

Not circled in GAMA-KiDS

not in SIMBAD http://simbad.u-strasbg.fr/simbad/sim-coo?Coord=11+50+24.9+%2B01+01+43.2&Radius=1.0&Radius.unit=arcmin&CooFrame=FK5&CooEqui=2000&CooEpoch=2000&jsessionid=E49BA4F43C3988EFE5FBB3ED513FF15D

has it moved? not moved much, so no planet nine.

is it a nearby star? These images are taken only a few years apart, so hard to see if they have moved.

https://zooniverse-static.s3.amazonaws.com/www.galaxyzoo.org/subjects/standard/5857e7ddd369fd0040009a2f.png http://legacysurvey.org/viewer/jpeg-cutout?ra=177.6033&dec=1.0285&zoom=16&layer=decals-dr3

Looking in Vizier

http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=&-out.add=_r&-out.add=_RAJ%2C_DEJ&-sort=_r&-to=&-out.max=20&-meta.ucd=2&-meta.foot=1&-c.rs=50&-c=177.6027+1.0284

There is a moving object in several lists in Vizier about 4 arc-sec away, not sure if it is the same.

A "moving galaxy"

The Initial Gaia Source List (IGSL) (Smart, 2013)

1 4.596 11 50 24.945 +01 01 43.37 177.603938 +01.028713 proper motion 2.6, -17.1

It is hard to pinpoint dim moving objects.

Possibly it is this star in the KiDS catalogue 22nd mag

KiDS-ESO-DR3 multi-band source catalog (de Jong+, 2017)

1 2.383 11 50 24.802 +01 01 42.82 KIDS J115024.80+010142.82 177.603342 +01.028562

Posted October 20, 2017 7:07 AM