J/ApJ/885/100 Evolu. star mass-metallicity relation. II. (Leethochawalit+, 2019)
Evolution of the stellar mass-metallicity relation.
II. Constraints on galactic outflows from the Mg abundances of quiescent
galaxies.
Leethochawalit N., Kirby E.N., Ellis R.S., Moran S.M., Treu T.
<Astrophys. J., 885, 100-100 (2019)>
=2019ApJ...885..100L 2019ApJ...885..100L (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy; Abundances; Abundances, [Fe/H]; Stars, ages;
Stars, masses; Spectra, optical; Photometry, ultraviolet;
Photometry, infrared
Keywords: galaxies: abundances; galaxies: evolution; galaxies: stellar content
Abstract:
We present the stellar mass-[Fe/H] and mass-[Mg/H] relation of
quiescent galaxies in two galaxy clusters at z∼0.39 and z∼0.54. We
derive the age, [Fe/H], and [Mg/Fe] for each individual galaxy using a
full-spectrum fitting technique. By comparing with the relations for
z∼0 Sloan Digital Sky Survey galaxies, we confirm our previous finding
that the mass-[Fe/H] relation evolves with redshift. The mass-[Fe/H]
relation at higher redshift has lower normalization and possibly
steeper slope. However, based on our sample, the mass-[Mg/H] relation
does not evolve over the observed redshift range. We use a simple
analytic chemical evolution model to constrain the average outflow
that these galaxies experience over their lifetime, via the
calculation of mass-loading factor. We find that the average
mass-loading factor η is a power-law function of galaxy stellar
mass, η∝M*-0.21±0.09. The measured mass-loading factors
are consistent with the results of other observational methods for
outflow measurements and with the predictions where outflow is caused
by star formation feedback in turbulent disks.
Description:
In Paper I, we presented a stellar mass-metallicity relation (MZR)
based on quiescent galaxies from the galaxy cluster Cl0024+17 at
z=0.39. In this paper, we expand the sample by including additional
quiescent galaxies from the galaxy cluster MS0451 at z=0.54.
The survey provides UV to near-infrared imaging and ground-based
optical spectroscopy of member galaxies up to ∼10Mpc in diameter
centered on both clusters. The available photometric bands are near-UV
and far-UV (FUV) from the Galaxy Evolution Explorer (GALEX) satellite,
BVRI bands from the 3.6m Canada-France-Hawaii Telescope (Cl0024)
and the Subaru 8m telescope (MS0451), F814W (∼I band) from Hubble
Space Telescope, and J and Ks bands from the WIRC camera on the
Palomar/Hale 200" telescope.
The spectroscopic data for both Cl0024 and MS0451 were obtained with
the DEIMOS spectrograph on the Keck II Telescope. Most data are part
of the original survey. We obtained additional DEIMOS spectroscopy to
enhance the signal-to-noise ratio (S/N) of a subset of the galaxy
spectra in MS0451. (R=2000 at ∼3500 to 6000Å).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 100 151 Catalog of measured age and metalicities
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See also:
J/ApJ/621/673 : Line indices for 124 early-type galaxies (Thomas+, 2005)
J/ApJ/634/977 : Redshifts in Cl 0024+16 members (Moran+, 2005)
J/ApJ/671/1503 : Cl 0024+16 and MS 0451-03 spectrophotometry (Moran+, 2007)
J/ApJS/200/8 : AGES: the AGN and Galaxy Evolution Survey (Kochanek+, 2012)
J/ApJ/779/102 : Metallicities of RGB stars in dwarf galaxies (Kirby+, 2013)
J/A+A/562/A21 : AGN feedback from CO observations (Cicone+, 2014)
J/ApJ/788/72 : Observed sample of z∼0.7 massive galaxies (Gallazzi+, 2014)
J/MNRAS/466/2570 : Low ioniza. emission-line regions galaxies (Belfiore+, 2017)
J/ApJ/856/15 : Stellar mass-metallicity relation. I. (Leethochawalit+, 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 1 A1 --- Cluster Galaxy cluster code (1)
3- 4 I2 --- Num [1/92] Galaxy number
6- 7 I2 h RAh [0/5] Hour of Right Ascension (J2000)
9- 10 I2 min RAm Minute of Right Ascension (J2000)
12- 16 F5.2 s RAs Second of Right Ascension (J2000)
18 A1 --- DE- [-/+] Sign of the Declination (J2000)
19- 20 I2 deg DEd Degree of Declination (J2000)
22- 23 I2 arcmin DEm Arcminute of Declination (J2000)
25- 28 F4.1 arcsec DEs Arcsecond of Declination (J2000)
30- 33 F4.1 [Msun] logM* [8.9/11.6] log stellar mass
35- 39 F5.2 [-] [Fe/H] [-0.56/0.2] Median metallicity (2)
41- 45 F5.2 [-] E_[Fe/H] [-0.5/0.4] 1-sigma (84th percentile) upper
limit in [Fe/H]
47- 51 F5.2 [-] e_[Fe/H] [-0.8/0.2] 1-sigma (16th percentile) lower
limit in [Fe/H]
53- 55 F3.1 Gyr Age [0.9/9.3] Median age
57- 60 F4.1 Gyr E_Age [1/13] 1-sigma (84th percentile) upper limit
in Age
62- 64 F3.1 Gyr e_Age [0.1/7.6] 1-sigma (16th percentile) lower limit
in Age
66- 70 F5.2 [-] [Mg/Fe] [-0.33/0.98] Median log Mg/Fe abundance ratio
72- 76 F5.2 [-] E_[Mg/Fe] [-0.2/1.1] 1-sigma (84th percentile) upper
limit in [Mg/Fe]
78- 82 F5.2 [-] e_[Mg/Fe] [-0.6/1] 1-sigma (16th percentile) lower
limit in [Mg/Fe]
84- 88 F5.2 --- eta [0.02/5.15]? Median average mass-loading factor
(3)
90- 94 F5.2 --- E_eta [0.2/8.8]? 1-sigma (84th percentile) upper
limit in eta
96-100 F5.2 --- e_eta [0/2.4]? 1-sigma (16th percentile) lower limit
in eta
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Note (1): Codes as follows:
C = Cl0024+27 (59 occurrences)
M = MS0451 (92 occurrences)
Note (2): Note that the [Fe/H]'s listed here are different from those
in Paper I, which were calculated by masking out the Mgb lines and
assuming the solar abundance ratios. See Appendix A for the comparison
between the two results.
Note (3): Calculated based on Equation 7 using the fiducial yield and return
fraction. Where eta is blank, the [Mg/H] is larger than the adopted
yield - see Section 5.3 for a more detailed discussion.
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History:
From electronic version of the journal
References:
Leethochawalit et al. Paper I: 2018ApJ...856...15L 2018ApJ...856...15L cat. J/ApJ/856/15
(End) Prepared by [AAS], Coralie Fix [CDS], 13-Sep-2021