mistakes in SGA-2020

[djschlegel]

This ticket can track galaxies in SGA-2020 used for DR9 that should be re-fit with different starting parameters:

https://www.legacysurvey.org/viewer?ra=55.11&dec=-28.68&layer=ls-dr9&zoom=14&sga

[moustakas]

PGC1168221: https://www.legacysurvey.org/viewer/?ra=139.0055415&dec=0.5240977&zoom=15&layer=ls-dr9&sga

[moustakas]

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

[moustakas]

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

[Snell1185]

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

[moustakas]

Additional related tickets:

• Leo A missing from SGA? legacysurvey/legacypipe#680
• Missing galaxies from SGA v3.0 legacysurvey/legacypipe#598
• "issue with missed objects" legacysurvey/legacypipe#489
• Color outliers in SGA can identify cases contaminated by stars legacysurvey/legacypipe#626
• SGA documentation issues legacysurvey/legacypipe#613
• final SGA fixes/work needed for DR9 (including splineskies) legacysurvey/legacypipe#600
• failed segmentation for large, bright galaxies (fix for next SGA version) legacysurvey/legacypipe#722

[moustakas]

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

UGCA20 might be the HII region, but regardless the parent galaxy is missing
https://www.legacysurvey.org/viewer?ra=25.8187&dec=19.9655&layer=ls-dr9&zoom=14&sga-parent&sga

Missing PGC061664 - merger + star:
https://www.legacysurvey.org/viewer?ra=274.0390&dec=42.6564&layer=ls-dr9&zoom=14&sga-parent&sga

PGC002634 - missing merger / companion:
https://www.legacysurvey.org/viewer?ra=11.0808&dec=-17.3580&layer=ls-dr9&zoom=14&sga-parent&sga

PGC1049719 - size impacted by star
https://www.legacysurvey.org//viewer/?ra=149.7777&dec=-5.0718&layer=ls-dr9&zoom=14&sga

PGC2106849 - probably should not have been part of IC4182_GROUP
https://www.legacysurvey.org/viewer-desi?ra=196.4636&dec=37.6669&layer=ls-dr9&zoom=13&sga-parent&sga

[moustakas]

ESO201-10 appears to be a globular cluster or something else (but not a galaxy)--
https://www.legacysurvey.org/viewer/?ra=58.7621&dec=-49.6149&layer=ls-dr9&zoom=14&sga&sga-parent
https://ned.ipac.caltech.edu/byname?objname=ESO201-10&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1

Confirmed to be a GC by Alex Drlica-Wagner:

This one is known as Arp-Madore 1 (AM1) or E1.  It is one of the most distant globular clusters (120 kpc), 
has a pretty large half-light radius (~15pc), and I'm not sure if it has a measured velocity dispersion 
(there isn't one listed in the Harris GC cluster catalog, but imagine someone must have measured it).

[moustakas]

NGC7592 + missing companion
https://www.legacysurvey.org/viewer-desi/?ra=349.5926&dec=-4.4163&layer=ls-dr9&zoom=15&sga&sga-parent

[moustakas]

NGC0547 - crowded cluster field; SGA is totally wrong on one of the giant galaxies
https://www.legacysurvey.org/viewer-desi/?ra=21.5026&dec=-1.3447&layer=ls-dr9&zoom=14&sga&sga-parent

[moustakas]

PGC087438 is a crowded cluster that's not handled correctly--
https://www.legacysurvey.org/viewer-desi/?ra=55.1092&dec=-28.6770&layer=ls-dr9&zoom=15&sga&sga-parent

[moustakas]

Missing PGC033116 companion--
https://www.legacysurvey.org/viewer-desi/?ra=164.9373&dec=17.6497&layer=ls-dr9&zoom=15&sga&sga-parent

[moustakas]

NGC0007 - incomplete grz coverage
https://www.legacysurvey.org/viewer-desi/?ra=2.0977&dec=-29.9167&layer=ls-dr9&zoom=13&sga-parent&sga

[moustakas]

Some additional missing systems based on a comparison with Hecate:

• PGC070787 - LSB - https://www.legacysurvey.org/viewer-desi?ra=348.643309&dec=-43.603653&layer=ls-dr9&zoom=13&sga-parent&sga#PGC093119
• [KKH2007]J1228+4358 - very LSB (probably real) - https://www.legacysurvey.org/viewer-desi?ra=187.183803&dec=43.973394&layer=ls-dr9&zoom=14&sga-parent&sga#PGC093119
• UGC08614 - blatantly missing; in the parent sample but gone from the SGA?? - https://www.legacysurvey.org/viewer-desi?ra=187.183803&dec=43.973394&layer=ls-dr9&zoom=14&sga-parent&sga#UGC08614
• GARLAND=PGC029167 - tidal dwarf from previous NGC3077-M81 interaction; ambiguous whether it should be included in the SGA, but it could be treated as a well-resolved Local-Group dwarf
  • https://ui.adsabs.harvard.edu/abs/1985MNRAS.217..731K/abstract
  • https://www.legacysurvey.org/viewer-desi?ra=150.9646&dec=68.6900&layer=ls-dr9&zoom=12&sga-parent&sga
• IKN - very LSB dwarf spheroidal -
  • https://www.legacysurvey.org/viewer-desi?ra=152.024775&dec=68.399261&layer=ls-dr9&zoom=12&sga-parent&sga
  • https://link.springer.com/article/10.1134/S1063772919070084
• PGC012798 - blatantly missing; in the parent sample but gone from the SGA?? - https://www.legacysurvey.org/viewer-desi?ra=51.3458&dec=-16.2331&layer=ls-dr9&zoom=13&sga-parent&sga
• PGC166095 - extreme LSB - https://www.legacysurvey.org/viewer-desi?ra=133.199166&dec=33.792528&layer=ls-dr9&zoom=13&sga-parent&sga#PGC166095
• PGC3097827 - extreme LSB(?) - Not sure if this is real. It's in the Karachentsev+2004 catalog (https://leda.univ-lyon1.fr/fG.cgi?n=a115&o=PGC3097827) but it looks like Galactic cirrus to me--
  • https://www.legacysurvey.org/viewer-desi?ra=146.19625&dec=67.438611&layer=ls-dr9&zoom=12&sga-parent&sga#PGC018515
• PGC040869 - LSB - https://www.legacysurvey.org/viewer-desi?ra=186.8826&dec=9.5958&layer=ls-dr9&zoom=14&sga-parent&sga#PGC018515
• PGC043697 - LSB but we really should have included it - https://www.legacysurvey.org/viewer-desi?ra=193.1516&dec=-6.289763&layer=ls-dr9&zoom=14&sga-parent&sga#PGC018515
• PGC061664 - real merger - https://www.legacysurvey.org/viewer-desi?ra=274.0394&dec=42.6564&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC028759=Arp's Loop - resolved, low-mass galaxy
  • https://www.legacysurvey.org/viewer-desi?ra=149.378351&dec=69.277706&layer=ls-dr9&zoom=12&sga-parent&sga
  • https://leda.univ-lyon1.fr/fG.cgi?n=a115&o=PGC028759
• PGC012345 - blatantly missing - https://www.legacysurvey.org/viewer-desi?ra=49.7367&dec=-10.5464&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC001575 - blatantly missing - https://www.legacysurvey.org/viewer-desi?ra=6.37335&dec=-14.553&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC2807106 - blatantly missing - https://www.legacysurvey.org/viewer-desi?ra=34.461744&dec=6.307257&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC014377 - blatantly missing - https://www.legacysurvey.org/viewer-desi?ra=60.893025&dec=-17.198249&layer=ls-dr9&zoom=14&sga-parent&sga
• UGC12515 - buried in a bright star, but real - https://www.legacysurvey.org/viewer-desi?ra=349.963097&dec=26.262785&layer=ls-dr9&zoom=14&sga-parent&sga
• UGCA342=PGC046093 - resolved (tidal?) dwarf - https://www.legacysurvey.org/viewer-desi?ra=198.777915&dec=42.001381&layer=ls-dr9&zoom=14&sga-parent&sga#PGC046093
• [HS98]117 - LSB - https://www.legacysurvey.org/viewer-desi?ra=155.354967&dec=71.11615&layer=ls-dr9&zoom=14&sga-parent&sga#PGC046093
• KKH089 - resolved dwarf? real?
  • https://leda.univ-lyon1.fr/ledacat.cgi?o=KKH089
  • https://www.legacysurvey.org/viewer-desi?ra=278.184261&dec=33.387974&layer=ls-dr9&zoom=14&sga-parent&sga#PGC046093
• ESO290-051 - blatantly missing (as well as some other neighbors) - https://www.legacysurvey.org/viewer-desi?ra=346.733217&dec=-42.898583&layer=ls-dr9&zoom=14&sga-parent&sga#PGC046093
• 2MASXJ21080727-1001115 - blatantly missing (lots of surrounding cirrus) - https://www.legacysurvey.org/viewer-desi?ra=317.03026&dec=-10.019898&layer=ls-dr9&zoom=14&sga-parent&sga#PGC046093
• UGC07242 - real but adjacent to a very bright star - https://www.legacysurvey.org/viewer-desi?ra=183.535027&dec=66.094687&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• PGC044422 - blatantly missing - https://www.legacysurvey.org/viewer-desi?ra=194.555466&dec=28.948121&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• [KKH2007]J1243+4127 - LSB - https://www.legacysurvey.org/viewer-desi?ra=190.979964&dec=41.456878&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• AGC238914 - lower SB, but not sure why we missing this - https://www.legacysurvey.org/viewer-desi?ra=208.969585&dec=30.348889&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• AGC335954 - lower SB - https://www.legacysurvey.org/viewer-desi?ra=349.445409&dec=21.099168&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• AGC102755 - lower SB - https://www.legacysurvey.org/viewer-desi?ra=4.122918&dec=30.955&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• 2MASXJ20555189-0344142 - blatant - https://www.legacysurvey.org/viewer-desi?ra=313.966275&dec=-3.73731&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• PGC040819 - LSB + star; in parent catalog but dropped from SGA (why??) - https://www.legacysurvey.org/viewer-desi?ra=186.823911&dec=14.147368&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• PGC006518 - blatant - https://www.legacysurvey.org/viewer-desi?ra=26.663431&dec=-3.780192&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• 2MASXJ10113491+6915290 - blatant - https://www.legacysurvey.org/viewer-desi?ra=152.89539&dec=69.258085&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• AGC103619 - blatant - https://www.legacysurvey.org/viewer-desi?ra=3.962082&dec=8.401389&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• SDSSJ215817.93-025404.8 - real but embedded in cirrus - https://www.legacysurvey.org/viewer-desi?ra=329.574708&dec=-2.901333&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• PGC2807105 - real but coordinates aren't great - https://www.legacysurvey.org/viewer-desi?ra=33.113812&dec=10.332834&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• PGC023521 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=125.981338&dec=71.030825&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• 2MASXJ13051021-0450129 - blatant - https://www.legacysurvey.org/viewer-desi?ra=196.292504&dec=-4.83684&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• SDSSJ102727.68+231812.2 - real but coordinates are very poor - https://www.legacysurvey.org/viewer-desi?ra=156.865352&dec=23.303375&layer=ls-dr9&zoom=14&sga-parent&sga#UGC07242
• UGC02027 - in parent but dropped from SGA?? - https://www.legacysurvey.org/viewer-desi?ra=38.290077&dec=8.909187&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC193782 - nice - https://www.legacysurvey.org/viewer-desi?ra=145.757746&dec=9.252611&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ20005660-5537536 - blatant - https://www.legacysurvey.org/viewer-desi?ra=300.235771&dec=-55.631569&layer=ls-dr9&zoom=14&sga-parent&sga
• ESO540-032 - LSB - https://www.legacysurvey.org/viewer-desi?ra=12.602349&dec=-19.906444&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC095601 - totally wrong coordinates; LSB - https://www.legacysurvey.org/viewer-desi?ra=127.2684&dec=78.836502&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC057559 - blatant - https://www.legacysurvey.org/viewer-desi?ra=243.509607&dec=28.4969&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC321639 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=340.962091&dec=4.735279&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC087262 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=213.842766&dec=14.250352&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC219464 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=169.551667&dec=16.526111&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC2807122 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=101.980189&dec=47.51306&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC3097693 - faint dwarf - https://www.legacysurvey.org/viewer-desi?ra=40.445&dec=-8.402583&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC083339 - faint dwarf - https://www.legacysurvey.org/viewer-desi?ra=161.739167&dec=12.998694&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC003012 - nice spiral; next to bright star - https://www.legacysurvey.org/viewer-desi?ra=12.873679&dec=-3.134026&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC166067 - faint dwarf - https://www.legacysurvey.org/viewer-desi?ra=38.627511&dec=22.580084&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC198425 - faint dwarf - https://www.legacysurvey.org/viewer-desi?ra=146.750835&dec=30.661668&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC322973 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=342.240404&dec=20.383889&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC104212 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=0.96&dec=33.655832&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC055898 - blatant - https://www.legacysurvey.org/viewer-desi?ra=236.035499&dec=27.444095&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC333528 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=350.600419&dec=28.734446&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC323548 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=332.062923&dec=3.603058&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC032528 - blatant (star) - https://www.legacysurvey.org/viewer-desi?ra=162.814189&dec=6.874818&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ20010619-5841526 - blatant - https://www.legacysurvey.org/viewer-desi?ra=300.275911&dec=-58.697913&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ03260068-1355485 - blatant - https://www.legacysurvey.org/viewer-desi?ra=51.50302&dec=-13.930246&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ07300586+6443185 - blatant - https://www.legacysurvey.org/viewer-desi?ra=112.5244&dec=64.721851&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC102926 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=10.456563&dec=29.750348&layer=ls-dr9&zoom=14&sga-parent&sga
• SDSSJ143155.74+361820.8 - geometry is incorrect; also missing another companion - https://www.legacysurvey.org/viewer-desi?ra=217.982082&dec=36.305719&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC072071 - blatant - https://www.legacysurvey.org/viewer-desi?ra=355.07925&dec=27.561472&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ02551383+0348422 - blatant - https://www.legacysurvey.org/viewer-desi?ra=43.807641&dec=3.811708&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ06561971+6259146 - blatant - https://www.legacysurvey.org/viewer-desi?ra=104.082137&dec=62.987329&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ02312014+2034541 - blatant - https://www.legacysurvey.org/viewer-desi?ra=37.833903&dec=20.581693&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC141114 - https://www.legacysurvey.org/viewer-desi?ra=352.299424&dec=11.849819&layer=ls-dr9&zoom=14&sga-parent&sga
• UGC04483 - blatant - https://www.legacysurvey.org/viewer-desi?ra=129.264166&dec=69.776389&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ11044360-2906332 - real - https://www.legacysurvey.org/viewer-desi?ra=166.18182&dec=-29.109318&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ01082027+0217469 - real - https://www.legacysurvey.org/viewer-desi?ra=17.084526&dec=2.296376&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC102821 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=14.179063&dec=30.450626&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC200262 - amazing merger companion - https://www.legacysurvey.org/viewer-desi?ra=164.94375&dec=17.653&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC248914 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=214.053333&dec=13.455&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC029604 - probably real but next to a really bright star - https://www.legacysurvey.org/viewer-desi?ra=152.567084&dec=62.913756&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ15441295+2723518 - real - https://www.legacysurvey.org/viewer-desi?ra=236.053926&dec=27.397778&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ21064538-0951297 - real - https://www.legacysurvey.org/viewer-desi?ra=316.689075&dec=-9.858293&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC166090 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=111.007617&dec=46.003194&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC166102 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=148.413339&dec=29.444415&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC334606 - dwarf - https://www.legacysurvey.org/viewer-desi?ra=352.745826&dec=16.591389&layer=ls-dr9&zoom=14&sga-parent&sga
• UGC05948 - real but star in main body - https://www.legacysurvey.org/viewer-desi?ra=162.658948&dec=15.763338&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC087117 - https://www.legacysurvey.org/viewer-desi?ra=344.339583&dec=27.981944&layer=ls-dr9&zoom=14&sga-parent&sga
• SDSSJ094017.61+130137.2 - https://www.legacysurvey.org/viewer-desi?ra=145.073393&dec=13.027022&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC335238 - https://www.legacysurvey.org/viewer-desi?ra=347.173326&dec=21.691389&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC086658 - https://www.legacysurvey.org/viewer-desi?ra=234.252195&dec=20.795739&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC311149 - https://www.legacysurvey.org/viewer-desi?ra=329.135832&dec=7.896668&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC334282 - https://www.legacysurvey.org/viewer-desi?ra=346.210006&dec=22.785554&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC023747 - https://www.legacysurvey.org/viewer-desi?ra=127.045761&dec=10.540664&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ00373345-0655202 - blatant! - https://www.legacysurvey.org/viewer-desi?ra=9.389374&dec=-6.922278&layer=ls-dr9&zoom=14&sga-parent&sga
• SDSSJ103606.17+272919.8 - https://www.legacysurvey.org/viewer-desi?ra=159.025719&dec=27.488811&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC113906 - https://www.legacysurvey.org/viewer-desi?ra=17.634582&dec=29.96&layer=ls-dr9&zoom=14&sga-parent&sga
• 6dFJ0304215-160126 - https://www.legacysurvey.org/viewer-desi?ra=46.08975&dec=-16.023778&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC190856 - https://www.legacysurvey.org/viewer-desi?ra=149.025419&dec=16.515832&layer=ls-dr9&zoom=14&sga-parent&sga
• SDSSJ093635.59+232508.6 - https://www.legacysurvey.org/viewer-desi?ra=144.148301&dec=23.41908&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC2832103 - https://www.legacysurvey.org/viewer-desi?ra=180.22939&dec=51.943322&layer=ls-dr9&zoom=14&sga-parent&sga
• SDSSJ163631.04+461928.0 - https://www.legacysurvey.org/viewer-desi?ra=249.129399&dec=46.324462&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC248904 - https://www.legacysurvey.org/viewer-desi?ra=224.025288&dec=13.72163&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC334192 - https://www.legacysurvey.org/viewer-desi?ra=348.532921&dec=6.744443&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC023414 - https://www.legacysurvey.org/viewer-desi?ra=125.190606&dec=56.49095&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC233574 - https://www.legacysurvey.org/viewer-desi?ra=195.092154&dec=12.923671&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ21065143-4449340 - bright satellite - https://www.legacysurvey.org/viewer-desi?ra=316.714292&dec=-44.826111&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ05195568-6307319 - https://www.legacysurvey.org/viewer-desi?ra=79.982&dec=-63.125528&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC009695 - https://www.legacysurvey.org/viewer-desi?ra=38.199083&dec=4.794537&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC132372 - https://www.legacysurvey.org/viewer-desi?ra=46.725831&dec=1.9775&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC139458 - https://www.legacysurvey.org/viewer-desi?ra=163.624512&dec=34.765239&layer=ls-dr9&zoom=14&sga-parent&sga
• SDSSJ162127.08+495716.6 - https://www.legacysurvey.org/viewer-desi?ra=245.362815&dec=49.954594&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC017899 - https://www.legacysurvey.org/viewer-desi?ra=87.185947&dec=-25.558176&layer=ls-dr9&zoom=14&sga-parent&sga
• SDSSJ122309.85+395320.5 - https://www.legacysurvey.org/viewer-desi?ra=185.791137&dec=39.889064&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ21432152-0321557 - https://www.legacysurvey.org/viewer-desi?ra=325.839719&dec=-3.365507&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ23000920+2421026 - https://www.legacysurvey.org/viewer-desi?ra=345.038334&dec=24.350722&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ23590614+0643271 - https://www.legacysurvey.org/viewer-desi?ra=359.775708&dec=6.724179&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ04584998-0807191 - https://www.legacysurvey.org/viewer-desi?ra=74.708322&dec=-8.122037&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC115771 - https://www.legacysurvey.org/viewer-desi?ra=29.131249&dec=21.397779&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ12092036+2304286 - https://www.legacysurvey.org/viewer-desi?ra=182.334825&dec=23.07463&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ02210727+1600586 - also missing adjacent bright galaxy - https://www.legacysurvey.org/viewer-desi?ra=35.280267&dec=16.01625&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC333395 - https://www.legacysurvey.org/viewer-desi?ra=352.243542&dec=31.397056&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC070596 - https://www.legacysurvey.org/viewer-desi?ra=347.499347&dec=18.448068&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ23170645+2128375 - https://www.legacysurvey.org/viewer-desi?ra=349.276944&dec=21.477074&layer=ls-dr9&zoom=14&sga-parent&sga
• EVCC0629 - https://www.legacysurvey.org/viewer-desi?ra=186.7267&dec=18.3937&layer=ls-dr9&zoom=14&sga-parent&sga
• SDSSJ104656.14+372303.4 - https://www.legacysurvey.org/viewer-desi?ra=161.733905&dec=37.384321&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC124077 - https://www.legacysurvey.org/viewer-desi?ra=38.165832&dec=21.202779&layer=ls-dr9&zoom=14&sga-parent&sga
• 6dFJ0833238-075019 - real, but wrong diameter and coordinates due to star - https://www.legacysurvey.org/viewer-desi?ra=128.349031&dec=-7.838724&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC3271869 - https://www.legacysurvey.org/viewer-desi?ra=194.69835&dec=-4.3861&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC014772 - https://www.legacysurvey.org/viewer-desi?ra=64.100729&dec=-15.121246&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC022906 - https://www.legacysurvey.org/viewer-desi?ra=122.469066&dec=57.912571&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC141104 - https://www.legacysurvey.org/viewer-desi?ra=349.832489&dec=24.933847&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ04331922-6311011 - https://www.legacysurvey.org/viewer-desi?ra=68.330084&dec=-63.183639&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC066035 - missing another nearby companion due to star - https://www.legacysurvey.org/viewer-desi?ra=316.136268&dec=9.65816&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC048727 - https://www.legacysurvey.org/viewer-desi?ra=206.213248&dec=32.526024&layer=ls-dr9&zoom=14&sga-parent&sga
• SDSSJ112924.40+222401.5 - https://www.legacysurvey.org/viewer-desi?ra=172.351686&dec=22.400418&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC023507 - https://www.legacysurvey.org/viewer-desi?ra=125.721078&dec=21.077984&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC029018 - https://www.legacysurvey.org/viewer-desi?ra=150.387312&dec=15.13135&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ02141114+1736453 - https://www.legacysurvey.org/viewer-desi?ra=33.546417&dec=17.612583&layer=ls-dr9&zoom=14&sga-parent&sga
• AGC334620 - https://www.legacysurvey.org/viewer-desi?ra=346.49459&dec=17.089168&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC1657901 is a shred of UGC09164 - https://www.legacysurvey.org/viewer-desi?ra=214.680006&dec=21.816148&layer=ls-dr9&zoom=14&sga-parent&sga
• 2MASXJ12420645+3245390 - https://www.legacysurvey.org/viewer-desi?ra=190.526988&dec=32.761011&layer=ls-dr9&zoom=14&sga-parent&sga
• PGC2807144 - https://www.legacysurvey.org/viewer-desi?ra=177.526207&dec=55.782624&layer=ls-dr9&zoom=14&sga-parent&sga
• GALEXASC J010318.95-044018.0 - blue spiral - https://www.legacysurvey.org/viewer-dev/?ra=15.8299&dec=-4.6714&layer=ls-dr9&zoom=15&bricks&sga

[moustakas]

The central coordinates for NGC4395 (https://www.legacysurvey.org/viewer-dev/?ra=186.455993&dec=33.546294&layer=ls-dr9&zoom=15&sga&sga-parent), NGC0247 (https://www.legacysurvey.org/viewer-dev/?ra=11.783689&dec=-20.758056&layer=ls-dr9&zoom=15&sga&sga-parent#NGC%20247), and NGC4565 (https://www.legacysurvey.org/viewer-dev/?ra=189.0864&dec=25.9874&layer=ls-dr9&zoom=14&sga&sga-parent), three large, famous galaxies, are incorrect. Bummer. There are probably more...

Also, the NGC4395 minor axis length is too small.

[Snell1185]

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

[Snell1185]

PGC033423 missing the companion
https://www.legacysurvey.org/viewer?ra=165.9745&dec=40.8500&layer=ls-dr10-grz&zoom=15&sga-parent&sga

[Snell1185]

#56 (comment) reply

Other examples include: NGC0598 NGC3031 NGC4258 NGC4826

These should follow the central artifact is the right position center

[moustakas]

The residual masking is too aggressive in some spheroidals, leading to a loss of light in the outer envelopes. A couple examples:
https://sga.legacysurvey.org/group/UGC07124?index=2
https://sga.legacysurvey.org/group/IC0941?index=4

[moustakas]

I'm closing this ticket in favor of several new, more finely grained tickets:

• objects with wacky surface-brightness profiles due to nearby bright stars #48
• spurious galaxies in SGA-2020 #51
• incorrect central coordinates for large (>5 arcmin) galaxies #68
• deblending problems in SGA-2020 #70
• galaxies missing from the SGA-2020 #73

@Snell1185 thank you for your contributions, which we continue to welcome!

[Snell1185]

PGC213712 is star

Migrated to 51