J/ApJ/929/61      Quiescent galaxies from SHELS and SDSS      (Damjanov+, 2022)
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Quiescent galaxy size, velocity dispersion, and dynamical mass evolution.
    Damjanov I., Sohn J., Utsumi Y., Geller M.J., Dell'Antonio I.
   <Astrophys. J., 929, 61 (2022)>
   =2022ApJ...929...61D
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ADC_Keywords: Galaxy catalogs; Spectra, optical; Photometry, SDSS; Redshifts;
              Velocity dispersion; Surveys
Keywords: Galaxy evolution ; Galaxy dynamics ; Galaxy structure ;
          Galaxy spectroscopy ; Galaxy photometry ; Dark matter ;
          Galaxy dark matter halos ; Early-type galaxies

Abstract:
    We use surveys covering the redshift range 0.05<z<3.8 to explore
    quiescent galaxy scaling relations and the redshift evolution of the
    velocity dispersion, size, and dynamical mass at fixed stellar mass.
    For redshift z<0.6, we derive mass-limited samples and demonstrate
    that these large samples enhance constraints on the evolution of the
    quiescent population. The constraints include 2985 new velocity
    dispersions from the SHELS F2 survey. In contrast with the known
    substantial evolution of size with redshift, evolution in the velocity
    dispersion is negligible. The dynamical-to-stellar-mass ratio
    increases significantly as the universe ages, in agreement with recent
    results that combine high-redshift data with the Sloan Digital Sky
    Survey. Like other investigators, we interpret this result as an
    indication that the dark matter fraction within the effective radius
    increases as a result of the impact of the minor mergers that are
    responsible for size growth. We emphasize that dense redshift surveys
    covering the range 0.07<z<1 along with strong and weak lensing
    measurements could remove many ambiguities in evolutionary studies of
    the quiescent population.

Description:
    We use large samples from the SDSS and SHELS redshift surveys to study
    the scaling between dynamical and stellar mass from redshift 0.1-0.6.
    Following van de Sande+ (2013, J/ApJ/771/85) and
    van de Sande+ (2015ApJ...799..125V), we select 93485 galaxies with
    0.05<z<0.07 from SDSS DR7 (Abazajian+ 2009, II/294). See Section 2.1.

    The F2 Hectospec data reported by Geller+ (2014, J/ApJS/213/35) were
    reduced with an IRAF-based pipeline including the RVSAO
    cross-correlation package. We have re-reduced these data with the
    current pipeline, HSRED v2.0 and SDSS DR16.
    Geller+ (2014) used the Hectospec 300-fiber instrument mounted on the
    MMT, in 2004-2009, to acquire spectroscopy for galaxies in the DLS F2
    field centered at RA=139.89{deg},DE=30.00{deg}. See Section 2.2.

File Summary:
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 FileName    Lrecl  Records   Explanations
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ReadMe          80        .   This file
table2.dat     107    11556  *The Smithsonian Hectospec Lensing Survey (SHELS)
                               F2 sample
table3.dat      75     3355   SHELS F2 quiescent sample
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Note on table2.dat: The survey limiting magnitude is the (Galactic extinction
    corrected) SDSS Petrosian magnitude (r^lim^_petro_=20.75). The table
    includes targets with measured stellar masses and D_n_4000.
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See also:
 II/282 : The SDSS Photometric Catalog, Release 6 (Adelman-McCarthy+, 2007)
 II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
 V/154  : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)
 J/MNRAS/371/703  : MILES library of empirical spectra (Sanchez-Blazquez+, 2006)
 J/ApJS/172/615   : GALFIT result for GEMS galaxies (Haussler+, 2007)
 J/MNRAS/382/109  : Massive galaxies in Extended Groth Strip (Trujillo+, 2007)
 J/A+A/524/A6     : Evolution of spectral early-type galaxies (Saglia+, 2010)
 J/ApJ/739/L44    : Structural data for gal. between 0.2<z<2.7 (Damjanov+, 2011)
 J/ApJS/196/11    : Bulge+disk decompositions of SDSS galaxies (Simard+, 2011)
 J/ApJ/775/106    : CANDELS passive and massive early-type gal. (Cassata+, 2013)
 J/ApJ/771/85     : Dynamical masses of z~2 quiescent gal. (van de Sande+, 2013)
 J/MNRAS/441/203  : Massive quiescent ETG in clusters (Delaye+ 2014)
 J/ApJS/213/35    : SHELS: complete galaxy redshift survey (Geller+, 2014)
 J/ApJ/821/101    : Stellar MFP for massive quiescent z<0.7 gal. (Zahid+, 2016)
 J/ApJS/229/20    : MMT/Hectospec redshift survey for Abell 2029 (Sohn+, 2017)
 J/ApJS/234/21    : Hectospec survey of galaxies in COSMOS (Damjanov+, 2018)
 J/ApJ/872/91     : SHELS galaxy sizes using Subaru/HSC (Damjanov+, 2019)
 J/ApJ/905/170    : Mass-based structural param. for 3D-HST gal. (Mosleh+, 2020)
 J/ApJ/902/17     : Sp. of quiescent gal. in 9 lensing clusters (Sohn+, 2020)
 J/ApJ/909/129    : HectoMAP redshift survey DR1 (Sohn+, 2021)
 J/MNRAS/501/1028 : Galaxies at z=1-3 lensed by six HFF clusters (Yang+, 2021)

Byte-by-byte Description of file: table2.dat
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   Bytes Format Units    Label    Explanations
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  1-  19 I19    ---      objID    SDSS objID
 21-  30 F10.6  deg      RAdeg    [138.7/141.1] Right Ascension (J2000)
 32-  40 F9.6   deg      DEdeg    [28.8/31.1] Declination (J2000)
 42-  47 F6.3   mag      rmag     [12.6/20.8] Extinction-corrected SDSS r-band
                                   Petrosian magnitude
 49-  54 F6.3   mag    e_rmag     [0.002/36.2] Mean error for rmag
 56-  62 F7.5   ---      z        [0.013/3.41] Redshift
 64-  70 F7.5   ---    e_z        [1e-5/0.002] Mean error for z
 72-  80 F9.3   ---      dn4000   [0.3/16394] The D_n_4000 spectral index
 82-  88 F7.3   ---    e_dn4000   [0/924]? Mean error for dn4000 (1)
 90-  95 F6.3   [Msun]   logMass  [7/13] Log of the stellar mass
 97- 101 F5.3   [Msun] E_logMass  [0.009/1] Upper error limit for logMass
103- 107 F5.3   [Msun] e_logMass  [0.009/1.1] Lower error limit for logMass
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Note (1): A blank indicates an "inf" value. In these cases the errors
          are affected by sky subtraction.
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Byte-by-byte Description of file: table3.dat
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   Bytes Format Units   Label   Explanations
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   1- 19 I19    ---     objID   SDSS objID
  21- 26 F6.3   kpc     Re      [1/51.3] Circularized half-light radius (1)
  28- 32 F5.3   kpc   e_Re      [0.002/1] Mean error for Re
  34- 39 F6.4   ---     b/a     [0.05/1] Axis ratio (2)
  41- 46 F6.4   ---   e_b/a     [0.0001/0.05] Mean error for b/a
  48- 52 F5.3   ---     n       [0.3/6] Sersic index
  54- 58 F5.3   ---   e_n       [0/0.7] Mean error for n
  60- 65 F6.1   km/s    sigma   [/592]?=-999 Velocity dispersion within 3kpc (3)
  67- 73 F7.1   km/s  e_sigma   [/17343]?=-999 Mean error for sigma
  75- 75 I1     ---     MLS     [0/1] Inclusion in the stellar mass
                                 limited sample; 1=YES
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Note (1): We include only galaxies with Re>1kpc.
Note (2): Used to calculate Re based on the galaxy major axis size R_a_.
Note (3): Aperture corrected.
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History:
    From electronic version of the journal

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(End)                    Prepared by [AAS], Emmanuelle Perret [CDS]  06-Mar-2024