galaxies missing from the SGA-2020

moustakas / SGA

Code and papers for the Siena Galaxy Atlas (SGA-2020).

MIT License

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galaxies missing from the SGA-2020 #73

Open moustakas opened 1 year ago

moustakas commented 1 year ago

Lists of galaxies missing from the SGA-2020 exist in many different tickets and repositories but going forward they should be reported into only this ticket and, specifically, the following file: https://github.com/moustakas/SGA/blob/main/py/SGA/data/SGA2020/SGA2020-missing-galaxies.ecsv

Any objects listed in this ticket should include the following minimal information and I will add them to the file linked above periodically.

GALAXY, datatype: string
RA, unit: deg, datatype: float64
DEC, unit: deg, datatype: float64
DIAM, unit: arcmin, datatype: float32
COMMENTS, datatype: string (optional)

Snell1185 commented 1 year ago

galaxy.............ra...............dec............diam....comments PGC166101 147.5601 67.5088 ? lsb PGC031640 159.6283, 58.7860 0.403 missing from sga and sga parent / hyperLEDA (+ SGA) galaxies in viewer

Snell1185 commented 1 year ago

mistakes:

Line 22 UGC08614 is missing from the SGA because of bad masking
Line 25 PGC012798 is missing from the SGA because of bad masking
Line 39 is likely galactic cirrus
Line 49 PGC040819 is missing from SGA due to bad masking. identified as a star in the DR9 catalog, galaxy not in catalog
Line 58 UGC02027 is missing from the SGA as DR9 (and Gaia) catalogued UGC02027 as a star, occlution is a factor

moustakas commented 10 months ago

Consider including all the dwarf galaxies in the Karachentseva & Karachentseva 1998 catalog (or related)-- https://ui.adsabs.harvard.edu/abs/1998A%26AS..127..409K/abstract

E.g., here are some notes from Arjun via a report from Gary Poczulp regarding K61:

I did find that this paper Karachentseva and Karachentsev 1998 
(https://ui.adsabs.harvard.edu/abs/1998A&AS..127..409K/abstract) lists the galaxy as K61 and 
claims it is a companion to M81. It is shown in figure 3 of Smeecina et al. 2020 
(https://iopscience.iop.org/article/10.3847/1538-4357/abc485/pdf). Looking it 
up in the NASA Extragalactic Database, I get the following page: 
https://ned.ipac.caltech.edu/byname?objname=KDG+061&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1 

The velocity of 221km/s comes from Makarova et al. 2010 
(https://ui.adsabs.harvard.edu/abs/2010MNRAS.406.1152M/abstract), 
and this paper has some other details about this source.

TriShotFlurry commented 4 months ago

I realized that most of these missing galaxies are caused by their diameters being missing or the objtype is set to 'g'. https://discuss.legacysurvey.org/t/siena-galaxy-atlas-2024-plans/9707