J/ApJ/913/103 SED modelling of LEGA-C & HST massive gal. (de Graaff+, 2021)
The fundamental plane in the LEGA-C survey: unraveling the M/L ratio variations
of massive star-forming and quiescent galaxies at z∼0.8.
de Graaff A., Bezanson R., Franx M., van der Wel A., Holden B.,
van de Sande J., Bell E.F., D'Eugenio F., Maseda M.V., Muzzin A.,
Sobral D., Straatman C.M.S., Wu P.-F.
<Astrophys. J., 913, 103-103 (2021)>
=2021ApJ...913..103D 2021ApJ...913..103D (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, spectra; Photometry, HST; Optical; Surveys;
Infrared sources
Keywords: Galaxy evolution; Galaxy structure; Galaxy kinematics; Galaxy dynamics
Abstract:
We explore the connection between the kinematics, structures and
stellar populations of massive galaxies at 0.6<z<1.0 using the
fundamental plane (FP). Combining stellar kinematic data from the
Large Early Galaxy Astrophysics Census (LEGA-C) survey with structural
parameters measured from deep Hubble Space Telescope imaging, we
obtain a sample of 1419 massive (log(M*/M☉)>10.5) galaxies
that span a wide range in morphology, star formation activity, and
environment, and therefore is representative of the massive galaxy
population at z∼0.8. We find that quiescent and star-forming galaxies
occupy the parameter space of the g-band FP differently and thus have
different distributions in the dynamical mass-to-light ratio
(Mdyn/Lg), largely owing to differences in the stellar age and
recent star formation history, and to a lesser extent, the effects of
dust attenuation. In contrast, we show that both star-forming and
quiescent galaxies lie on the same mass FP at z∼0.8, with a comparable
level of intrinsic scatter about the plane. We examine the variation
in Mdyn/M* through the thickness of the mass FP, finding no
significant residual correlations with stellar population properties,
Sersic index, or galaxy overdensity. Our results suggest that, at
fixed size and velocity dispersion, the variations in Mdyn/Lg of
massive galaxies reflect an approximately equal contribution of
variations in M*/Lg, and variations in the dark matter fraction or
initial mass function.
Description:
The LEGA-C survey (van der Wel+ 2016ApJS..223...29V 2016ApJS..223...29V ;
Straatman+ 2018, J/ApJS/239/27) is a deep spectroscopic survey
conducted with the Visible Multi-Object Spectrograph (VIMOS) on the
Very Large Telescope, targeting massive galaxies at redshifts
0.6<z<1.0 in the COSMOS field. Each target was observed for a total of
∼20hr at a resolution of R∼2500 in the wavelength range ∼6300-8800Å.
Here, we use the third data release of the LEGA-C survey, comprising
4209 spectra. See Section 2.1.
Morphological information in the rest-frame optical is available for
nearly all LEGA-C galaxies from the Hubble Space Telescope (HST)
Advanced Camera for Surveys (ACS) F814W imaging in the COSMOS field.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 123 1419 *Results of the MAGPHYS SED modeling
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Note on table1.dat: We use the MAGPHYS code (da Cunha+ 2008MNRAS.388.1595D 2008MNRAS.388.1595D)
to fit the photometric SEDs and derive stellar population properties.
MAGPHYS uses an energy balance recipe, which accounts for light
absorbed by dust in the stellar birth clouds being reradiated in the
infrared. See Section 2.2.
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See also:
B/hst : HST Archived Exposures Catalog (STScI, 2007)
V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)
J/ApJS/173/293 : UV-Optical galaxy color-magnitude diagram I. (Wyder+, 2007)
J/MNRAS/397/75 : Fundamental Plane analysis in Shapley (Gargiulo+, 2009)
J/ApJ/724/714 : Velocity dispersions of MS1054-03 & Coma gal. (Holden+, 2010)
J/A+A/524/A6 : Evolution of spectral early-type galaxies (Saglia+, 2010)
J/ApJ/735/86 : NEWFIRM MBS: photometric catalogs (Whitaker+, 2011)
J/ApJS/196/11 : Bulge+disk decompositions of SDSS galaxies (Simard+, 2011)
J/A+A/544/A156 : UltraVISTA Catalogue Release DR1 (McCracken+, 2012)
J/ApJS/203/24 : Structural param. of galaxies in CANDELS (van der Wel+, 2012)
J/AJ/145/77 : Imaging & spectroscopy in 3 galaxy clusters (Jorgensen+, 2013)
J/ApJS/206/8 : COSMOS/UltraVISTA Ks-selected catalogs v4.1 (Muzzin+, 2013)
J/ApJ/771/85 : Dynamical masses of z∼2 quiescent gal. (van de Sande+, 2013)
J/A+A/556/A55 : Multi-color phot. of star-forming galaxies (Ilbert+, 2013)
J/ApJ/777/18 : Stellar mass functions of galaxies to z=4 (Muzzin+, 2013)
J/MNRAS/446/2144 : Galaxy And Mass Assembly: red & blue gal. (Taylor+, 2015)
J/ApJ/799/148 : DEIMOS galaxy sample at z∼0.7 (Bezanson+, 2015)
J/MNRAS/446/3943 : galaxies 2D phot. decompositions in SDSS-DR7 (Meert+, 2015)
J/ApJ/805/121 : Overdensities of 0<z<3 COSMOS galaxies (Darvish+, 2015)
J/ApJS/219/8 : SFR for WISE + SDSS spectroscopic galaxies (Chang+, 2015)
J/ApJ/821/101 : Stellar MFP for massive quiescent z<0.7 gal. (Zahid+, 2016)
J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016)
J/ApJ/837/16 : Cosmic web of galaxies in the COSMOS field (Darvish+, 2017)
J/ApJ/858/60 : z∼0.8 quiescent gal. kinematics from LEGA-C (Bezanson+, 2018)
J/ApJS/239/27 : LEGA-C DR2: galaxies in the COSMOS field (Straatman+, 2018)
J/MNRAS/483/2057 : SDSS-IV MaNGA Morphological Catalogues (Fischer+, 2019)
J/ApJ/877/103 : Half-mass radii for ∼7000 gal. at 1.0≤z≤2.5 (Suess+, 2019)
J/ApJ/881/42 : HST phot. & GMOS sp. of Lynx E & W clusters (Jorgensen+, 2019)
J/ApJS/256/44 : LEGA-C DR3: spectra of 0.6<z<1 galaxies (van der Wel+, 2021)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- [MMS2013] [4792/261923] UltraVISTA identifier
(Muzzin+, 2013, J/ApJS/206/8)
8- 13 F6.3 [Msun] logM2.5 Log stellar mass; 2.5th percentile
15- 20 F6.3 [Msun] logM16 Log stellar mass; 16th percentile
22- 27 F6.3 [Msun] logM50 Log stellar mass; 50th percentile
29- 34 F6.3 [Msun] logM84 Log stellar mass; 84th percentile
36- 41 F6.3 [Msun] logM97.5 Log stellar mass; 97.5th percentile
43- 49 F7.3 [yr-1] logsSFR2.5 Log specific SFR; 2.5th percentile
51- 57 F7.3 [yr-1] logsSFR16 Log specific SFR; 16th percentile
59- 65 F7.3 [yr-1] logsSFR50 Log specific SFR; 50th percentile
67- 73 F7.3 [yr-1] logsSFR84 Log specific SFR; 84th percentile
75- 81 F7.3 [yr-1] logsSFR97.5 Log specific SFR; 97.5th percentile
83- 87 F5.3 [yr] logAge2.5 Log luminosity-weighted age; 2.5th
percentile
89- 93 F5.3 [yr] logAge16 Log luminosity-weighted age; 16th
percentile
95- 99 F5.3 [yr] logAge50 Log luminosity-weighted age; 50th
percentile
101- 105 F5.3 [yr] logAge84 Log luminosity-weighted age; 84th
percentile
107- 111 F5.3 [yr] logAge97.5 Log luminosity-weighted age; 97.5th
percentile
113- 117 F5.3 mag Av V-band dust attenuation
119- 123 F5.3 --- D4000n LICK/IDS absorption index D4000_n
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 25-Nov-2022