J/ApJ/835/153 Galaxy environment in the 3D-HST fields (z=0.5-3) (Fossati+, 2017)
Galaxy environment in the 3D-HST fields: witnessing the onset of satellite
quenching at z∼1-2.
Fossati M., Wilman D.J., Mendel J.T., Saglia R.P., Galametz A.,
Beifiori A., Bender R., Chan J.C.C., Fabricius M., Bandara K.,
Brammer G.B., Davies R., Forster Schreiber N.M., Genzel R., Hartley W.,
Kulkarni S.K., Lang P., Momcheva I.G., Nelson E.J., Skelton R.,
Tacconi L.J., Tadaki K., Ubler H., Van Dokkum P.G., Wisnioski E.,
Whitaker K.E., Wuyts E., Wuyts S.
<Astrophys. J., 835, 153-153 (2017)>
=2017ApJ...835..153F 2017ApJ...835..153F (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, photometry ; Surveys
Keywords: galaxies: evolution; galaxies: star formation; galaxies: statistics
methods: statistical
Abstract:
We make publicly available a catalog of calibrated environmental
measures for galaxies in the five 3D-Hubble Space Telescope
(HST)/CANDELS deep fields. Leveraging the spectroscopic and grism
redshifts from the 3D-HST survey, multiwavelength photometry from
CANDELS, and wider field public data for edge corrections, we derive
densities in fixed apertures to characterize the environment of
galaxies brighter than JH140<24mag in the redshift range 0.5<z<3.0.
By linking observed galaxies to a mock sample, selected to reproduce
the 3D-HST sample selection and redshift accuracy, each 3D-HST galaxy
is assigned a probability density function of the host halo mass, and
a probability that it is a central or a satellite galaxy. The same
procedure is applied to a z=0 sample selected from Sloan Digital Sky
Survey. We compute the fraction of passive central and satellite
galaxies as a function of stellar and halo mass, and redshift, and
then derive the fraction of galaxies that were quenched by environment
specific processes. Using the mock sample, we estimate that the
timescale for satellite quenching is tquench∼2-5Gyr; it is longer at
lower stellar mass or lower redshift, but remarkably independent of
halo mass. This indicates that, in the range of environments commonly
found within the 3D-HST sample (Mh≲1014M☉), satellites are
quenched by exhaustion of their gas reservoir in the absence of
cosmological accretion. We find that the quenching times can be
separated into a delay phase, during which satellite galaxies behave
similarly to centrals at fixed stellar mass, and a phase where the
star formation rate drops rapidly (τf∼0.4-0.6Gyr), as shown
previously at z=0. We conclude that this scenario requires satellite
galaxies to retain a large reservoir of multi-phase gas upon
accretion, even at high redshift, and that this gas sustains star
formation for the long quenching times observed.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
envcat.dat 158 18745 *Environment catalog for the 3D-HST sample
addcat.dat 97 18745 *Additional environmental parameters
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Note on *.dat: Selection criteria: F140W≤24mag, 0.5<z<3.0, star_flag!=1
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See also:
J/A+A/379/740 : ESO Imaging Survey (EIS) (Arnouts+, 2001)
J/A+A/403/493 : H-band observation of Chandra Deep Field South (Moy+, 2003)
J/ApJS/161/21 : Extended Chandra Deep Field-South survey (Lehmer+, 2005)
J/ApJS/162/1 : MUSYC: optical source catalog (Gawiser+, 2006)
J/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007)
J/ApJS/172/182 : XMM Clusters of galaxies in COSMOS field (Finoguenov+ 2007)
J/MNRAS/381/1369 : Redshifts in Subaru/XMM Deep Field (Geach+, 2007)
J/ApJS/176/1 : Subaru/XMM-Newton deep survey (SXDS). II. (Furusawa+, 2008)
J/ApJ/690/1236 : COSMOS photometric redshift catalog (Ilbert+, 2009)
J/ApJS/183/295 : A K-selected catalog of the ECDFS from MUSYC (Taylor+, 2009)
J/MNRAS/403/2063 : SXDF X-ray groups and galaxy clusters (Finoguenov+, 2010)
J/ApJS/189/270 : MUSYC optical imaging in ECDF-S (Cardamone+, 2010)
J/ApJ/735/86 : NEWFIRM MBS: photometric catalogs (Whitaker+, 2011)
J/A+A/544/A156 : UltraVISTA Catalogue Release DR1 (McCracken+, 2012)
J/A+A/549/A63 : GMASS photometry (Kurk+, 2013)
J/ApJ/765/117 : X-ray group of galaxies in AEGIS (Erfanianfar+, 2013)
J/ApJ/768/74 : PHIBSS: CO obs. of star-forming galaxies (Tacconi+, 2013)
J/ApJ/769/80 : Spitzer/IRAC observations of five deep fields (Ashby+, 2013)
J/ApJS/207/24 : GOODS-S CANDELS multiwavelength catalog (Guo+, 2013)
J/ApJ/777/18 : Stellar mass functions of galaxies to z=4 (Muzzin+, 2013)
J/ApJS/210/3 : SDSS bulge, disk & stellar mass estimates (Mendel+, 2014)
J/MNRAS/443/2679 : GEEC2 spectroscopic survey of Galaxy groups (Balogh+, 2014)
J/ApJS/214/24 : 3D-HST+CANDELS catalog (Skelton+, 2014)
J/ApJ/796/60 : ECDFS galaxies phot. redshifts + counterparts (Hsu+, 2014)
J/A+A/576/A130 : Ultra-deep cat. of X-ray groups in ECDF-S (Finoguenov+, 2015)
J/ApJS/225/27 : 3D-HST Survey: grism spectra master catalog (Momcheva+, 2016)
Byte-by-byte Description of file: envcat.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Field 3D-HST field (AEGIS, COSMOS, GOODS-N, GOODS-S
or UDS)
11- 15 I5 --- [SWM2014] [43/50461] 3D-HST photometric ID (G1)
20- 40 A21 --- SpecID 3D-HST spectroscopic (grism) ID from
Momcheva+ (2016, J/ApJS/225/27)
44- 47 F4.2 --- f075 [0.2/1] Fraction of the 0.75Mpc aperture in
the photometric catalogue (frac075)
53- 57 F5.2 Mpc-2 Sig075 [0.5/35.7]?=0 Density of galaxies in
an aperture of 0.75Mpc radius (Sigma075)
62- 67 F6.3 --- Del075 [-0.8/16.1]?=-1 Overdensity of galaxies in
an aperture of 0.75Mpc radius (Delta075)
77- 78 I2 --- MRk [0/34] Stellar mass rank in the adaptive
aperture (MassRank) (1)
84- 88 F5.3 --- Pcen Probability that the galaxy is a central
94- 98 F5.3 --- Psat Probability that the galaxy is a satellite
103-108 F6.3 --- MhCen16 ?=0 16th percentile of the log(halo mass/Msun)
cumulative probability density function (PDF)
given that the galaxy is a central
113-118 F6.3 --- MhCen50 ?=0 50th percentile of the log(halo mass/Msun)
cumulative PDF given that the galaxy is
a central
123-128 F6.3 --- MhCen84 [10/15]?=0 84th percentile of
the log(halo mass/Msun) cumulative PDF given
that the galaxy is a central
133-138 F6.3 --- MhSat16 ?=0 16th percentile of the log(halo mass/Msun)
cumulative PDF given that the galaxy is
a satellite
143-148 F6.3 --- MhSat50 ?=0 50th percentile of the log(halo mass/Msun)
cumulative PDF given that the galaxy is
a satellite
153-158 F6.3 --- MhSat84 [11/15]?=0 84th percentile of
the log(halo mass/Msun) cumulative PDF given
that the galaxy is a satellite
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Note (1): Fossati+ (2015MNRAS.446.2582F 2015MNRAS.446.2582F) explored how the rank in stellar mass
of a galaxy in an appropriate aperture can be a good discriminator of
the central/satellite status for a galaxy.
We define a galaxy to be central if it is the most massive
(mass rank = 1) within an adaptive aperture that only depends on the
stellar mass. Otherwise, if it is not the most massive (mass rank >1),
it is classified as a satellite.
See section 6.1 for further explanations.
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Byte-by-byte Description of file: addcat.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 A7 --- Field 3D-HST field
11- 15 I5 --- [SWM2014] [43/50461] 3D-HST photometric ID (G1)
20- 40 A21 --- SpecID 3D-HST spectroscopic (grism) ID from
Momcheva+ (2016, J/ApJS/225/27)
42- 53 F12.8 deg RAdeg Right Ascension (J2000) (G1)
57- 68 F12.8 deg DEdeg Declination (J2000) (G1)
72- 76 I5 --- Nmg [9/34283]?=-99 Number of matched mock galaxies
82- 86 F5.3 Mpc Size [0.3/1] Size of the adaptive aperture
92- 97 F6.1 km/s Depth [1500/7500] Depth in redshift space
of the adaptive aperture
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Global notes:
Note (G1): From Skelton+ (2014, J/ApJS/214/24)
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Nomenclature note:
Galaxies are <[SWM2014] {Field} NNNNN> in Simbad.
History:
Downloaded at http://zenodo.org/record/168056#.WZVPYidLfmG
(Fossati163DHSTALLfields.tar.gz)
(End) Emmanuelle Perret [CDS] 17-Aug-2017