J/ApJS/267/27 SMUDGes V. The complete catalog of UDGs from DR9 (Zaritsky+, 2023)
Systematically Measuring Ultra-Diffuse Galaxies (SMUDGes).
V. The complete SMUDGes catalog and the nature of ultradiffuse galaxies.
Zaritsky D., Donnerstein R., Dey A., Karunakaran A., Kadowaki J.,
Khim D.J., Spekkens K., Zhang H.
<Astrophys. J. Suppl. Ser., 267, 27 (2023)>
=2023ApJS..267...27Z 2023ApJS..267...27Z
ADC_Keywords: Galaxies, photometry; Surveys; Galaxies, radius;
Photometry, ugriz; Velocity dispersion
Keywords: Galaxy formation ; Galaxy evolution ; Galaxy properties ;
Low surface brightness galaxies
Abstract:
We present the completed catalog of ultradiffuse galaxy (UDG)
candidates (7070 objects) from our search of the DR9 Legacy Survey
images, including distance and total mass estimates for 1529 and
1436 galaxies, respectively, that we provide and describe in detail.
From the sample with estimated distances, we obtain a sample of
585 UDGs (µ0,g≥24mag/arcsec2 and re≥1.5kpc) over
20000 square degrees of sky in various environments. We conclude that
UDGs in our sample are limited to 1010≲Mh/M☉≲1011.5 and
are on average a factor of 1.5-7 deficient in stars relative to the
general population of galaxies of the same total mass. That factor
increases with increasing galaxy size and mass up to a factor of ∼10
when the total mass of the UDG increases beyond Mh=1011M☉.
We do not find evidence that this factor has a dependence on the UDGs
large-scale environment.
Description:
We report the results of our analysis of Data Release 9 (DR9) of the
northern portion of the Legacy Survey, which includes observations
obtained by the MOSAIC camera at the KPNO 4m telescope (MzLS, Mayall
z-band Legacy Survey) and the 90Prime camera at the Steward
Observatory 2.3m telescope (BASS, Beijing-Arizona Sky Survey). In
addition to these telescopes, the full survey also employs DECam
(DECaLS) at the CTIO 4m, which was the focus of our previous work
described in Papers I-III. This paper presents our final SMUDGes
catalog release, and we do not intend to reprocess data using DR10 or
any future release.
BASS observations were taken from 2015 November 12 to 2019 March 7 and
MzLS from 2015 November 19 to 2018 February 12.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 402 7070 The complete catalog
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See also:
J/ApJ/638/725 : Fundamental manifold of spheroids (Zaritsky+, 2006)
J/A+A/486/85 : Abell 496 low-luminosity early-type gal. (Chilingarian+, 2008)
J/ApJ/772/82 : A catalog of globular cluster systems (Harris+, 2013)
J/ApJS/225/11 : Subaru-UDGs in the Coma cluster (Yagi+, 2016)
J/ApJ/842/133 : HI-bearing ultra-diffuse ALFALFA galaxies (Leisman+, 2017)
J/ApJS/240/1 : SMUDGes. I. 1st results in the Coma Cluster (Zaritsky+, 2019)
J/A+A/640/A106 : MUSE MATLAS-2019 spectral datacube (Mueller+, 2020)
J/MNRAS/493/87 : 1005 galaxies with z<0.09 sample (Trujillo+, 2020)
J/ApJ/923/257 : Ultra-diffuse gal. with spectroscopic obs. (Kadowaki+, 2021)
J/ApJS/257/60 : SMUDGes. II. Expanded survey & Stripe 82 (Zaritsky+, 2021)
J/ApJS/261/11 : SMUDGes. III. The Southern catalog (Zaritsky+, 2022)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [SMDG]
5- 18 A14 --- SMDG Galaxy Name (HHMMSSs+DDMMSS; J2000)
20- 28 F9.5 deg RAdeg Right Ascension (J2000)
30- 38 F9.5 deg DEdeg [-65.6/84.3] Declination (J2000)
40- 45 F6.2 arcsec Re [5.3/125] Effective radius
47- 52 F6.2 arcsec E_Re [-19.8/5.7]?=-99.99 1 sigma upper
uncertainty (angular) (1)
54- 59 F6.2 arcsec Re-bias [/8.4]?=-99.99 bias
(angular; corrected Re=Re-Re-bias)
61- 66 F6.2 arcsec e_Re [-7.1/12.2]?=-99.99 1 sigma lower
uncertainty (angular) (1)
68 I1 --- f_Re [0/1] 0=good; 1=extrapolated
70- 73 F4.2 --- b/a [0.37/1] Minor to major axis ratio
75- 80 F6.2 --- E_b/a [-0.3/0.1]?=-99.99 1 sigma upper
uncertainty (1)
82- 87 F6.2 --- b/a-bias [/0.1]?=-99.99 bias
(corrected b/a=b/a-b/a-bias)
89- 94 F6.2 --- e_b/a [-0.1/0.3]?=-99.99 1 sigma lower
uncertainty (1)
96 I1 --- f_b/a [0/1] 0=good; 1=extrapolated
98- 101 F4.2 --- n [0.06/1.95] Sersic index
103- 108 F6.2 --- E_n [-0.7/0.5]?=-99.99 1 sigma upper
uncertainty (1)
110- 115 F6.2 --- n-bias [/0.6]?=-99.99 bias
(corrected n=n-n-bias)
117- 122 F6.2 --- e_n [-0.5/1.4]?=-99.99 1 sigma lower
uncertainty (1)
124 I1 --- f_n [0/1] 0=good; 1=extrapolated
126- 131 F6.2 deg PA [-90/90] Position angle of major axis
measured N to E
133- 138 F6.2 deg E_PA [-98/90]?=-99.99 1 sigma upper
uncertainty (1)
140- 145 F6.2 deg PA-bias [0]?=-99.99 bias
(corrected PA=PA-PA-bias)
147- 152 F6.2 deg e_PA [-12/58]?=-99.99 1 sigma lower
uncertainty (1)
154 I1 --- f_PA [0/1] 0=good; 1=extrapolated
156- 161 F6.2 mag/arcsec2 mu0g [24/29.2]?=-99.99 Central surface
brightness in g, AB mag (2)
163- 168 F6.2 mag/arcsec2 E_mu0g [-1.6/-0.01]?=-99.99 1 sigma upper
uncertainty (1)
170- 175 F6.2 mag/arcsec2 mu0g-bias [-0.4/0.8]?=-99.99 bias
(corrected mu0g=mu0g-mu0g-bias)
177- 182 F6.2 mag/arcsec2 e_mu0g [-0.6/1]?=-99.99 1 sigma lower
uncertainty (1)
184 I1 --- f_mu0g [0/1] 0=good; 1=extrapolated
186- 191 F6.2 mag/arcsec2 mu0r [20.8/29]?=-99.99 Central surface
brightness in r, AB mag (2)
193- 198 F6.2 mag/arcsec2 E_mu0r [-1.5/0.07]?=-99.99 1 sigma upper
uncertainty (1)
200- 205 F6.2 mag/arcsec2 mu0r-bias [-0.4/0.8]?=-99.99 bias
(corrected mu0r=mu0r-mu0r-bias)
207- 212 F6.2 mag/arcsec2 e_mu0r [-0.5/1.2]?=-99.99 1 sigma lower
uncertainty (1)
214 I1 --- f_mu0r [0/1] 0=good; 1=extrapolated
216- 221 F6.2 mag/arcsec2 mu0z [2.8/28.2]?=-99.99 Central surface
brightness in z, AB mag (2)
223- 228 F6.2 mag/arcsec2 E_mu0z [-2.8/0.4]?=-99.99 1 sigma upper
uncertainty (1)
230- 235 F6.2 mag/arcsec2 mu0z-bias [-0.3/2]?=-99.99 bias
(corrected mu0z=mu0z-mu0z-bias)
237- 242 F6.2 mag/arcsec2 e_mu0z [-1.2/0.7]?=-99.99 1 sigma lower
uncertainty (1)
244 I1 --- f_mu0z [0/1] 0=good; 1=extrapolated
246- 251 F6.2 mag gmag [15.4/22.5]?=-99.99 Total apparent
g mag, AB mag (2)
253- 258 F6.2 mag E_gmag [-2.2/0.3]?=-99.99 1 sigma upper
uncertainty (1)
260- 265 F6.2 mag gmag-bias [-0.5/1.8]?=-99.99 bias
(corrected gmag=gmag-gmag-bias)
267- 272 F6.2 mag e_gmag [-1.2/0.4]?=-99.99 1 sigma lower
uncertainty (1)
274 I1 --- f_gmag [0/1] 0=good; 1=extrapolated
276- 281 F6.2 mag rmag [12.6/22]?=-99.99 Total apparent
r mag, AB mag (2)
283- 288 F6.2 mag E_rmag [-2.5/0.3]?=-99.99 1 sigma upper
uncertainty (1)
290- 295 F6.2 mag rmag-bias [-0.6/2]?=-99.99 bias
(corrected rmag=rmag-rmag-bias)
297- 302 F6.2 mag e_rmag [-1.1/0.8]?=-99.99 1 sigma lower
uncertainty (1)
304 I1 --- f_rmag [0/1] 0=good; 1=extrapolated
306- 311 F6.2 mag zmag [-0.5/22.6]?=-99.99 Total apparent
z mag, AB mag (2)
313- 318 F6.2 mag E_zmag [-3.5/0.6]?=-99.99 1 sigma upper
uncertainty (1)
320- 325 F6.2 mag zmag-bias [-0.6/3]?=-99.99 bias
(corrected zmag=zmag-zmag-bias)
327- 332 F6.2 mag e_zmag [-2.5/0.7]?=-99.99 1 sigma lower
uncertainty (1)
334 I1 --- f_zmag [0/1] 0=good; 1=extrapolated
336 I1 --- VC [0/2] Visual classification; 0=good;
1=rejected
338- 341 F4.2 --- SFD [0/0.07] Optical depth at location
from Schlegel+ 1998ApJ...500..525S 1998ApJ...500..525S
maps for DECaLS filters
343- 346 F4.2 mag Ag [0.01/0.3] Corresponding extinction
in g band
348- 351 F4.2 mag Ar [0.01/0.2] Corresponding extinction
in r band
353- 356 F4.2 mag Az [0.01/0.1] Corresponding extinction
in z band
358- 363 F6.2 --- comp [-0.4/0.7]?=-99.99 Fractional
completeness
365 I1 --- f_comp [0/2] 0=good, 1=extrapolated
completness, 2=biases extrapolated
367- 371 I5 km/s cz [13/16262]?=0 Estimated recessional
velocity, czest
373- 378 A6 --- n_cz Source of cz (3)
380- 384 F5.1 km/s sigma [1.4/317]?=0 Estimate of internal
velocity dispersion
386- 390 F5.2 [Msun] MassTot [6/12]?=0 Estimate of total mass
392- 395 I4 km/s sigEnv [100/1730]?=0 Velocity dispersion of
associated environment
397- 399 I3 --- Nenv [3/185]?=0 Number of galaxies in
associated environment
401- 402 A2 --- Ref Data from DECaLS
("D"; 5760 occurrences) or
MzLS/BASS ("MB"; 1310 occurrences)
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Note (1): Uncertainties bounds are to be applied relative to the
measured value but describe the bias-corrected uncertainty interval.
Note (2): Magnitudes not extinction corrected.
Note (3): Redshift source as follows:
z_est = line-of-sight overdensity (442 occurrences)
specz = spectroscopic (192 occurrences)
coma = coma cluster member (54 occurrences)
fornax = fornax cluster member (190 occurrences)
virgo = virgo cluster member (651 occurrences)
none = 5541 occurrences
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History:
From electronic version of the journal
References:
Zaritsky et al. Paper I. 2019ApJS..240....1Z 2019ApJS..240....1Z Cat. J/ApJS/240/1
Zaritsky et al. Paper II. 2021ApJS..257...60Z 2021ApJS..257...60Z Cat. J/ApJS/257/60
Zaritsky et al. Paper III. 2022ApJS..261...11Z 2022ApJS..261...11Z Cat. J/ApJS/261/11
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 09-Oct-2023