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moustakas / SGA

Code and papers for the Siena Galaxy Atlas (SGA-2020).
MIT License
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spurious galaxies in SGA-2020 #51

Open moustakas opened 3 years ago

moustakas commented 3 years ago
moustakas commented 1 year ago

Carried over from #56:

SDSSJ222743.82+070833.3 is Galactic cirrus https://www.legacysurvey.org/viewer/?ra=336.9326010&dec=7.1425921&zoom=10&layer=ls-dr9&sga

So is SDSSJ222743.82+070833.3 https://www.legacysurvey.org/viewer/?ra=336.9326010&dec=7.1425921&zoom=15&layer=ls-dr9&sga&sga-parent#PGC2203059

IC3049 group has a contaminating star: https://www.legacysurvey.org/viewer?ra=183.3900&dec=14.4808&layer=ls-dr9&zoom=15&sga

PGC170565 is likely a foreground star. https://sga.legacysurvey.org/group/PGC170565?index=1685 https://www.legacysurvey.org/viewer/?ra=1.208628&dec=-40.9016209&zoom=15&layer=ls-dr9&sga

UM461 is split into two; the secondary (SDSS) source is a compact HII region in this low-metallicity galaxy--https://www.legacysurvey.org/viewer?ra=177.8879&dec=-2.3733&layer=ls-dr10&zoom=16&sga

PGC060073 should not exist https://www.legacysurvey.org/viewer?ra=259.8425&dec=49.0338&layer=ls-dr10-grz&zoom=16&sga-parent&sga

PGC1640217 is a star, although there are two nearby companions. https://www.legacysurvey.org/viewer?ra=0.4979&dec=20.9854&layer=ls-dr10-grz&zoom=15

moustakas commented 1 year ago
Snell1185 commented 1 year ago

PGC213712 is star Link Here

Snell1185 commented 1 year ago

PGC881165_GROUP

TriShotFlurry commented 9 months ago

Some lists of galaxies that are not rejected within the final release

SDSSJ024710.83-010233.2 Group: SDSSJ024710.83-010233.2_GROUP RA Dec=41.795168 -1.042573 D(26)=0.449 arcmin, b/a=0.49, PA=56.4 deg Type: Sc , Redshift=0.0285 Comment: Nebulous part of PGC1128235

PGC1084318 Group: PGC010106_GROUP RA Dec=40.088614 -2.729178 D(26)=1.043 arcmin, b/a=0.28, PA=20.5 deg , Redshift=-99.0000 Comment: Nebulous Part of PGC010106

PGC1063214 Group: PGC1063214 RA Dec=30.871911 -4.076951 D(26)=0.424 arcmin, b/a=0.59, PA=126.0 deg , Redshift=-99.0000 Comment: Star, Proper motion confirmed by Gaia. Identifier may be the nearby galaxy albeit coordinates in LEDA are wrong.

SDSSJ155929.21+201253.5 Group: PGC056598_GROUP RA Dec=239.871395 20.214391 D(26)=0.671 arcmin, b/a=0.23, PA=40.4 deg , Redshift=-99.0000 Comment: Part of PGC056598

PGC519191 Group: IC1627_GROUP RA Dec=17.028859 -46.083275 D(26)=0.459 arcmin, b/a=0.65, PA=170.8 deg , Redshift=-99.0000 Comment: Part of IC1627

PGC353614 Group: ESO120-010_GROUP RA Dec=84.253496 -61.646664 D(26)=0.803 arcmin, b/a=0.66, PA=66.5 deg , Redshift=-99.0000 Comment: Part of ESO120-010

PGC671745 Group: PGC671745_GROUP RA Dec=0.432167 -33.771472 D(26)=0.598 arcmin, b/a=0.46, PA=118.7 deg , Redshift=-99.0000 Comment: Part of PGC671782

PGC212878 Group: UGC01432_GROUP RA Dec=29.354636 17.217295 D(26)=0.444 arcmin, b/a=0.63, PA=7.9 deg , Redshift=-99.0000 Comment: Part of UGC01432

TriShotFlurry commented 8 months ago

PGC2238689 Group: PGC2238689 RA Dec=102.518913 44.189322 D(26)=0.719 arcmin, b/a=0.76, PA=11.0 deg , Redshift=-99.0000 Comment: Centered on star (Probably the galaxy leftwards)

TriShotFlurry commented 8 months ago

SDSSJ145933.78+325040.0 Group: UGC09647_GROUP RA Dec=224.890905 32.844648 D(26)=0.427 arcmin, b/a=0.40, PA=148.5 deg , Redshift=0.0088 Part of UGC09647

UGC03972 Group: PGC021685_GROUP RA Dec=116.171465 73.820978 D(26)=1.918 arcmin, b/a=0.59, PA=153.1 deg Type: SBbc , Redshift=0.0170 More of a spiral arm to me.

PGC046927 Group: ESO576-051_GROUP RA Dec=201.278918 -19.768698 D(26)=0.646 arcmin, b/a=0.78, PA=161.0 deg Type: Sb , Redshift=-99.0000 Galaxy should be removed

PGC200288 Group: PGC042874_GROUP RA Dec=191.032875 45.011364 D(26)=0.626 arcmin, b/a=0.47, PA=63.4 deg , Redshift=-99.0000 Just the one galaxy bud

TriShotFlurry commented 8 months ago

SDSSJ151657.57+085331.0 Group: SDSSJ151657.57+085331.0_GROUP RA Dec=229.239382 8.891317 D(26)=0.832 arcmin, b/a=0.45, PA=34.8 deg Type: Sbc , Redshift=0.0339 Not sure if it really exists though you should probably remove it.

PGC1379156 Group: PGC050236_GROUP RA Dec=211.333056 10.412701 D(26)=0.433 arcmin, b/a=0.79, PA=160.2 deg , Redshift=-99.0000 Interesting, maybe you should have just one.

TriShotFlurry commented 8 months ago

SDSSJ095554.67+195757.4 Group: PGC1611770_GROUP RA Dec=148.977689 19.965922 D(26)=0.465 arcmin, b/a=0.62, PA=62.4 deg , Redshift=-99.0000

SDSSJ080448.82+473414.9 Group: SDSSJ080448.82+473414.9 RA Dec=121.206965 47.571347 D(26)=0.539 arcmin, b/a=0.54, PA=74.7 deg , Redshift=-99.0000 Appears to be the same position as this PGC galaxy, it should be removed because it's part of the original galaxy

TriShotFlurry commented 8 months ago

SDSSJ123834.40+142113.8 Group: IC3609_GROUP RA Dec=189.643554 14.353836 D(26)=0.398 arcmin, b/a=0.55, PA=38.8 deg , Redshift=-99.0000 Part of IC369

TriShotFlurry commented 7 months ago

This mentioned pair of galaxies is split into four sources, These were incorrectly cross-identified in LEDA and should be removed. https://discuss.legacysurvey.org/t/about-as-open-as-an-open-spiral-can-be/9774

TriShotFlurry commented 7 months ago

SDSSJ084521.59+443106.0 Group: PGC024597_GROUP RA Dec=131.340024 44.518174 D(26)=0.517 arcmin, b/a=0.19, PA=149.5 deg Type: SBab , Redshift=-99.0000 In the HCG 35 group - one of them is part of another.

PGC215036 Group: PGC015081_GROUP RA Dec=66.479977 -8.567367 D(26)=0.783 arcmin, b/a=1.00, PA=0.0 deg , Redshift=0.1030 All three galaxies in the PGC15081 group are poorly treated, one of them is a duplicate.

moustakas commented 5 months ago

PGC2079288 and PGC2079322 are not right; it's an odd system of three cores, one or more of which may be foreground stars-- https://www.legacysurvey.org/viewer?ra=183.6575&dec=36.3599&layer=ls-dr9&zoom=15&sga

TriShotFlurry commented 1 month ago

PGC4677325 Group: NGC4996_GROUP RA Dec=197.388741 0.865642 D(26)=1.113 arcmin, b/a=0.53, PA=110.2 deg , Redshift=-99.0000 Spurious that made it into SGA2020

TriShotFlurry commented 3 weeks ago

https://www.legacysurvey.org//viewer-dev/?ra=197.3921&dec=0.8823&layer=ls-dr9&zoom=14&sga-parent&sga&const

TriShotFlurry commented 1 week ago

PGC 43317 IS NOT NGC 4702, it is NGC 4692= PGC 43200. LEDA and SiMBAD are wrong. https://www.legacysurvey.org/viewer/?ra=192.0904&dec=27.2175&layer=ls-dr9&zoom=11&ngc&sga