J/ApJ/799/148 DEIMOS galaxy sample at z∼0.7 (Bezanson+, 2015)
One plane for all: massive star-forming and quiescent galaxies lie on the
same mass fundamental plane at z ∼ 0 and z ∼ 0.7.
Bezanson R., Franx M., van Dokkum P.G.
<Astrophys. J., 799, 148 (2015)>
=2015ApJ...799..148B 2015ApJ...799..148B
ADC_Keywords: Redshifts ; Velocity dispersion ; Galaxies, spectra
Keywords: cosmology: observations; galaxies: elliptical and lenticular, cD;
galaxies: evolution; galaxies: fundamental parameters;
galaxies: kinematics and dynamics; galaxies: spiral
Abstract:
Scaling relations between galaxy structures and dynamics have been
studied extensively for early- and late-type galaxies, both in the
local universe and at high redshifts. The abundant differences between
the properties of disky and elliptical, or star-forming and quiescent,
galaxies seem to be characteristic of the local universe; such clear
distinctions begin to disintegrate as observations of massive galaxies
probe higher redshifts. In this paper we investigate the existence of
the mass fundamental plane of all massive galaxies (σ≳100km/s).
This work includes local galaxies (0.05<z<0.07) from the Sloan Digital
Sky Survey, in addition to 31 star-forming and 72 quiescent massive
galaxies at intermediate redshift (z∼0.7) with absorption-line
kinematics from deep Keck-DEIMOS spectra and structural parameters
from Hubble Space Telescope imaging. In two-parameter scaling
relations, star-forming and quiescent galaxies differ structurally and
dynamically. However, we show that massive star-forming and quiescent
galaxies lie on nearly the same mass fundamental plane, or the
relationship between stellar mass surface density, stellar velocity
dispersion, and effective radius. The scatter in this relation
(measured about logσ) is low: 0.072dex (0.055dex intrinsic) at
z∼0 and 0.10dex (0.08dex intrinsic) at z∼0.7. This 3D surface is not
unique: virial relations, with or without a dependence on luminosity
profile shapes, can connect galaxy structures and stellar dynamics
with similar scatter. This result builds on the recent finding that
mass fundamental plane has been stable for early-type galaxies since
z∼2. As we now find that this also holds for star-forming galaxies to
z∼0.7, this implies that these scaling relations of galaxies will be
minimally susceptible to progenitor biases owing to the evolving
stellar populations, structures, and dynamics of galaxies through
cosmic time.
Description:
For our study of local galaxies, we use a sample of galaxies at
0.05<z<0.07 from DR7 of the SDSS (Abazajian et al. 2009, II/294),
selected as described in Bezanson et al. (2013ApJ...779L..21B 2013ApJ...779L..21B).
Stellar mass-to-light (M*/L) ratios are acquired from the MPA-JHU
galaxy catalog (Brinchmann et al. 2004MNRAS.351.1151B 2004MNRAS.351.1151B).
Keck-DEIMOS spectra for a total of 162 targeted galaxies were
collected in the average spectral range of ∼6500-9200Å (R∼5000).
We observed a sample of galaxies at 0.4<z<0.9 from the NEWFIRM Medium
Band Survey (NMBS) COSMOS (Whitaker et al. 2011, J/ApJ/735/86) and
UKIDSS-UDS fields (Williams et al. 2009ApJ...691.1879W 2009ApJ...691.1879W), focusing on
overlap with the CANDELS (Grogin et al. 2011ApJS..197...35G 2011ApJS..197...35G; Koekemoer
et al. 2011ApJS..197...36K 2011ApJS..197...36K)/3D-HST (GO 12177 and 12328; Brammer et al.
2012ApJS..200...13B 2012ApJS..200...13B; Skelton et al. 2014ApJS..214...24S 2014ApJS..214...24S) fields, using
DEIMOS on Keck II from 2012 January 19 to 21.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 80 103 DEIMOS z∼0.7 sample - Galaxy properties
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See also:
B/hst : HST Archived Exposures Catalog (STScI, 2007)
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
J/ApJS/206/10 : CANDELS multiwavelength catalog (Galametz+, 2013)
J/ApJ/777/18 : Stellar mass functions of galaxies to z=4 (Muzzin+, 2013)
J/ApJ/775/106 : CANDELS passive & massive early-type galaxies (Cassata+, 2013)
J/ApJ/771/85 : Dynamical mass of z∼2 quiescent galaxies (van de Sande+, 2013)
J/AJ/145/77 : Imaging & spectroscopy in 3 galaxy clusters (Jorgensen+, 2013)
J/MNRAS/427/1666 : Massive galaxies in CANDELS-UDS field (Bruce+, 2012)
J/ApJS/203/24 : Galaxies structural param. in CANDELS (van der Wel+, 2012)
J/ApJS/196/11 : Bulge+disk decompositions of SDSS galaxies (Simard+, 2011)
J/ApJ/735/86 : NEWFIRM MBS: photometric catalogs (Whitaker+, 2011)
J/ApJ/724/714 : Velocity dispersions of MS1054-03, Coma gal. (Holden+, 2010)
J/MNRAS/398/1129 : Central galaxies in groups and clusters (Guo+, 2009)
J/ApJS/183/295 : A K-selected catalog of the ECDFS from MUSYC (Taylor+, 2009)
J/ApJS/176/1 : Subaru/XMM-Newton deep survey (SXDS). II. (Furusawa+, 2008)
J/ApJ/653/1027 : TKRS/GOODS-N Field galaxies (Weiner+, 2006)
J/ApJ/638/725 : Fundamental manifold of spheroids (Zaritsky+, 2006)
http://www.sdss.org/ : SDSS home page
http://www.mpa-garching.mpg.de/SDSS/DR7/ : MPA-JHU DR7 home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- ID Identifier ({C/U}NNNNN) (1)
8- 17 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000)
19- 28 F10.7 deg DEdeg Declination in decimal degrees (J2000)
30- 34 F5.3 --- z [0.3/1.1] Redshift
36- 39 F4.1 kpc Re [0.6/15.6] Circularized effective radius
41- 43 F3.1 --- n [0.7/6] Sersic index (2)
45- 54 A10 --- Filter Filter used in the observation ("ACS-F814W" or
"WFC3-F160W") (2)
56- 60 F5.2 [Msun] logM [9.9/11.6] Log stellar mass
62- 64 I3 km/s sig.A [85/284] Velocity dispersion measured
in the aperture
66- 67 I2 km/s e_sig.A [3/34] Uncertainty in sigmaA
69- 71 I3 km/s sig.Re [88/291] Aperture corrected velocity dispersion
73- 74 I2 km/s e_sig.Re [3/36] Uncertainty in sigmaRe
76- 80 I5 s tExp [20400/49200] Exposure time
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Note (1): "U" identified galaxies taken from the UKIDSS Ultra-Deep Survey
Data Release 1 (see Williams et al., 2009ApJ...691.1879W 2009ApJ...691.1879W).
Note (2): Galaxy morphologies are measured by fitting 2D Sersic models
using GALFIT (Peng et al. 2002AJ....124..266P 2002AJ....124..266P) to HST imaging, either
from CANDELS F160W WFC3 imaging (van der Wel et al. 2012,
J/ApJS/203/24) when available (74 galaxies) or from ACS F814W imaging
(Bezanson et al. 2011ApJ...737L..31B 2011ApJ...737L..31B) in NMBS-COSMOS (59 galaxies).
See section 2.4.
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Acknowledgements:
Rachel Bezanson [Univ. of Arizona] for coordinates with more significant
figures.
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 16-Jun-2015