J/ApJ/909/74 The Dragonfly Wide Field Survey. II. Massive gal. (Miller+, 2021)
The Dragonfly Wide Field Survey.
II. Accurate total luminosities and colors of nearby massive galaxies and
implications for the galaxy stellar-mass function.
Miller T.B., van Dokkum P., Danieli S., Li J., Abraham R., Conroy C.,
Gilhuly C., Greco J.P., Liu Q., Lokhorst D., Merritt A.
<Astrophys. J., 909, 74 (2021)>
=2021ApJ...909...74M 2021ApJ...909...74M
ADC_Keywords: Galaxies, photometry; Photometry, SDSS; Colors; Surveys
Keywords: Galaxy photometry ; Galaxy luminosities ; Galaxy colors ;
Galaxy counts
Abstract:
Stellar-mass estimates of massive galaxies are susceptible to
systematic errors in their photometry, due to their extended light
profiles. In this study, we use data from the Dragonfly Wide Field
Survey to accurately measure the total luminosities and colors of
nearby massive galaxies. The low surface brightness limits of the
survey (µg∼31mag/arcsec2 on a 1' scale) allow us to implement a
method, based on integrating the 1D surface brightness profile, that
is minimally dependent on any parameterization. We construct a sample
of 1188 massive galaxies with logM*/M☉>10.75 based on the
Galaxy Mass and Assembly (GAMA) survey and measure their total
luminosities and g-r colors. We then compare our measurements to
various established methods applied to imaging from the Sloan Digital
Sky Survey (SDSS), focusing on those favored by the GAMA survey. In
general, we find that galaxies are brighter in the r band by an
average of ∼0.05mag and bluer in g-r colors by ∼0.06mag compared to
the GAMA measurements. These two differences have opposite effects on
the stellar-mass estimates. The total luminosities are larger by 5%
but the mass-to-light ratios are lower by ∼10%. The combined effect is
that the stellar-mass estimate of massive galaxies decreases by 7%.
This, in turn, implies a small change in the number density of massive
galaxies: ≤30% at logM*/M☉≥11.
Description:
The main data set we use in this study is the Dragonfly Wide Field
Survey (DWFS), presented in Danieli+ (2020ApJ...894..119D 2020ApJ...894..119D). The DWFS
is an imaging survey carried out with the 48-lens Dragonfly Telephoto
Array. DWFS has surveyed 330deg2 of the well-studied Stripe 82 and
GAMA fields in g and r bands. Dragonfly is located at the New Mexico
Skies observatory.
We focused on the part of the survey that overlaps with the Galaxy And
Mass Assembly (GAMA) equatorial fields (DR3;
Baldry+ 2018, J/MNRAS/474/3875). See Section 2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
dwfsphot.dat 104 1188 Photometry measurements for massive galaxies in
the Dragonfly Wide Field Survey (DWFS)
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See also:
III/88 : Stellar Spectrophotometric Atlas (Gunn+ 1983)
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
II/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)
II/371 : The Dark Energy Survey (DES): Data Release 2 (Abott+, 2021)
I/356 : Gaia DR3 Part 2. Extra-galactic (Gaia Collaboration, 2022)
J/AJ/130/873 : BQS objects in the SDSS DR3 area (Jester+, 2005)
J/AJ/130/2647 : Tidal features of nearby red galaxies (van Dokkum+, 2005)
J/A+A/523/A48 : Gaia photometry (Jordi+, 2010)
J/MNRAS/413/971 : Galaxy And Mass Assembly (GAMA) DR1 (Driver+, 2011)
J/ApJS/196/11 : Bulge+disk decompositions of SDSS galaxies (Simard+, 2011)
J/MNRAS/421/3027 : Statisical study of galaxy dust emissions (Bourne+, 2012)
J/ApJS/210/3 : SDSS bulge, disk & total stellar masses (Mendel+, 2014)
J/MNRAS/446/120 : ATLAS3D project. XXIX (Duc+, 2015)
J/MNRAS/446/3943 : galaxies 2D phot. decompositions in SDSS-DR7 (Meert+, 2015)
J/MNRAS/456/2221 : Optically red galaxies in H-ATLAS/GAMA (Dariush+, 2016)
J/MNRAS/464/1306 : LARGESS survey (Ching+, 2017)
J/ApJ/836/115 : Double-component model fitting of galaxies (Oh+, 2017)
J/AJ/156/18 : APOGEE: binary comp. of evolved stars (Price-Whelan+, 2018)
J/MNRAS/474/3875 : Galaxy And Mass Assembly (GAMA): DR3 (Baldry+, 2018)
J/ApJ/877/103 : Half-mass radii for galaxies at 1.0≤z≤2.5 (Suess+, 2019)
J/AJ/159/103 : SDSS & GAMA dwarf gal. mergers with HSC (Kado-Fong+, 2020)
http://legacysurvey.org/ : DESI Legacy Survey home page
http://skyserver.sdss.org/dr14 : SDSS DR14 data access home page
Byte-by-byte Description of file: dwfsphot.dat
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Bytes Format Units Label Explanations
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1- 10 E10.5 deg RAdeg [129/223.5] Right ascension (J2000)
12- 22 E11.5 deg DEdeg [-2.5/2.5] Declination (J2000)
24- 30 I7 --- GAMA [6882/3913469] Unique galaxy ID used in the
GAMA database (CataId)
32- 49 I18 --- objID SDSS DR7 object ID
51- 60 E10.5 mag gmag [15.33/20.05] Dragonfly measured g-band
magnitude converted to SDSS filter system (AB)
62- 71 E10.5 --- fextp-g [8.4e-6/0.0982] g fextp - g-band fraction of
flux contained in the exponential
extrapolation (1)
73- 82 E10.5 mag rmag [14.6/19.09] Dragonfly measured r-band
magnitude converted to SDSS filter system (AB)
84- 93 E10.5 --- fextp-r [8.9e-6/0.092] r f_extp - r-band fraction of
flux contained in the exponential
extrapolation (1)
95- 104 E10.5 mag g-r [0.068/2.48] g-r color index (2)
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Note (1): The extrapolated fraction of the total flux, fextp is:
fextp=Sextp/(Sextp+Sobs) where Sobs is the observed flux and
Sextp is the extrapolated flux; see Section 2.5.
Note (2): Dragonfly measured g-r color using the total magnitudes, corrected
for differential extinction and converted to SDSS filter system.
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History:
Downloaded at: http://tbmiller-astro.github.io/data/
References:
Danieli et al. Paper I. 2020ApJ...894..119D 2020ApJ...894..119D
(End) Emmanuelle Perret [CDS] 09-Aug-2022