J/AJ/162/47 UV luminosity in ∼25000 2<z<9 galaxies (Bouwens+, 2021)
New determinations of the UV luminosity functions from z∼9 to 2 show a
remarkable consistency with halo growth and a constant star formation
efficiency.
Bouwens R.J., Oesch P.A., Stefanon M., Illingworth G., Labbe I., Reddy N.,
Atek H., Montes M., Naidu R., Nanayakkara T., Nelson E., Wilkins S.
<Astron. J., 162, 47-47 (2021)>
=2021AJ....162...47B 2021AJ....162...47B (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies; Photometry, ultraviolet; Redshifts
Keywords: Lyman-break galaxies; High-redshift galaxies; Galaxy evolution
Luminosity function
Abstract:
Here we provide the most comprehensive determinations of the
rest-frame UV luminosity function (LF) available to date with the
Hubble Space Telescope (HST) at z∼2-9. Essentially all of the
noncluster extragalactic legacy fields are utilized, including the
Hubble Ultra Deep Field, the Hubble Frontier Fields parallel fields,
and all five CANDELS fields, for a total survey area of 1136arcmin2.
Our determinations include galaxies at z∼2-3 leveraging the deep HDUV,
UVUDF, and ERS WFC3/UVIS observations available over an ∼150arcmin2
area in the GOODS-North and GOODS-South regions. All together, our
collective samples include >24000 sources, >2.3x larger than previous
selections with HST. We identify 5766, 6332, 7240, 3449, 1066, 601,
246, and 33 sources at z∼2, 3, 4, 5, 6, 7, 8, and 9, respectively.
Combining our results with an earlier z∼10 LF determination by Oesch
et al., we quantify the evolution of the UV LF. Our results indicate
that there is (1) a smooth flattening of the faint-end slope α
from α~-2.4 at z∼10 to α~-1.5 at z∼2, (2) minimal
evolution in the characteristic luminosity M* at z≳2.5, and (3) a
monotonic increase in the normalization log10{phi* from z∼10 to 2,
which can be well described by a simple second-order polynomial,
consistent with an "accelerated" evolution scenario. We find that each
of these trends (from z∼10 to 2.5 at least) can be readily explained
on the basis of the evolution of the halo mass function and a simple
constant star formation efficiency model.
Description:
In this paper, we make use of a suite of new data sets to
significantly expand current Hubble Space Telescope (HST) samples of
z∼2-9 galaxies and improve recent determinations of the UV luminosity
function (LF) based on HST data.
For our z∼2-3 selections, the most important new data set is the
Hubble Deep UV (HDUV) observations in the F275W and F336W bands
combined with WFC3/UVIS.
For our z∼4-9 selections, the most noteworthy new data are the
HST optical and near-IR observations obtained over the six parallel
fields from the HST Frontier Fields (HFF) program.
All together and including the z∼10-11 selection from
Oesch+, 2018ApJ...855..105O 2018ApJ...855..105O, our selections of z=2-11 galaxies from
HST fields include 24741 galaxies.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 62 24741 *A complete list of the sources
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Note on table2.dat : Included in the z∼2, z∼3, z∼4, z∼5, z∼6, z∼7, z∼8, z∼9,
and z∼10 samples from the present selection and that of
Oesch+, 2018ApJ...855..105O 2018ApJ...855..105O.
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See also:
J/AJ/127/2856 : Brown dwarfs in the 2MASS Survey (Burgasser+, 2004)
J/ApJ/600/L99 : Colours of z∼6 galaxies in GOODS (Dickinson+, 2004)
J/AJ/132/1729 : Hubble Ultra Deep Field BVI-dropout sources (Beckwith+, 2006)
J/A+A/556/A55 : Multi-color photometry of star-forming galaxies (Ilbert+, 2013)
J/ApJ/777/18 : Stellar mass functions of galaxies to z=4 (Muzzin+, 2013)
J/MNRAS/432/2696 : Galaxy luminosity function at z = 7-9 (McLure+, 2013)
J/ApJ/793/115 : UV-continuum slopes beta for z∼4-8 galaxies (Bouwens+, 2014)
J/MNRAS/440/2810 : Galaxy luminosity function at z ≃ 7 (Bowler+, 2014)
J/AJ/149/178 : Redshift catalog galaxies in GOODS-South field (Morris+, 2015)
J/AJ/150/31 : Photometry & redshifts of galaxies in the UDF (Rafelski+, 2015)
J/ApJ/803/34 : z∼4-10 galaxies from HST legacy fields (Bouwens+, 2015)
J/ApJ/810/71 : UV mag of candidate galaxies at 3~<z~<8.5 (Finkelstein+, 2015)
J/ApJS/221/23 : IRAC HUDF and GOODS ultradeep surveys (Labbe+, 2015)
J/ApJ/821/123 : z∼4-7 Lyman break galaxies Hubble deep fields (Harikane+, 2016)
J/ApJS/225/27 : 3D-HST Survey: grism spectra master catalog (Momcheva+, 2016)
J/A+A/608/A2 : MUSE Hubble Ultra Deep Field Survey. II. (Inami+, 2017)
J/ApJ/843/41 : HST/WFC3 obs. of z∼2-8 galaxies 4HFF clusters (Bouwens+, 2017)
J/ApJ/854/73 : Full-data results of HFF: galaxies z∼6-9 (Ishigaki+, 2018)
J/PASJ/70/S10 : GOLDRUSH I. UV magnitudes (Ono+, 2018)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- ID Source ID
21- 22 I2 h RAh [0/22] Hour of Right Ascension (J2000)
24- 25 I2 min RAm Minute of Right Ascension (J2000)
27- 31 F5.2 s RAs Second of Right Ascension (J2000)
33- 33 A1 --- DE- [-/+] Sign of the Declination (J2000)
34- 35 I2 deg DEd Degree of Declination (J2000)
37- 38 I2 arcmin DEm Arcminute of Declination (J2000)
40- 43 F4.1 arcsec DEs Arcsecond of Declination (J2000)
45- 49 F5.2 mag mag [22.5/31] Measured apparent AB magnitude (1)
51- 52 A2 --- rset Sample (2)
54- 55 A2 --- Dset Data Set in which the source was found (3)
57- 61 F5.2 --- zphot [1.5/11.1] Photometric Redshift estimated EAZY (4)
62- 62 A1 --- ezqual [*]Higher Probability for Being at Low-Redshift (5)
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Note (1): Apparent magnitude in the V606, I814, and H160 bands for
galaxies in the z∼2, 3, and 4-10 samples, respectively. Apparent
magnitudes are in the i775 band for z∼3 sources over the UVUDF.
Note (2): The mean redshift of the sample in which the source was found
Note (3): Data sets as follows:
1 = HUDF/XDF
2 = HUDF09-1
3 = HUDF09-2
4 = ERS
5 = CANDELS GOODS-S
6 = CANDELS GOODS-N
7 = CANDELS UDS
8 = CANDELS COSMOS
9 = CANDELS EGS
10 = BoRG/HIPPIES or other pure-parallel programs
11 = Abell2744 Parallel Field
12 = MACS0416 Parallel Field
13 = MACS0717 Parallel Field
14 = MACS1149 Parallel Field
15 = Abell S1063 Parallel Field
16 = Abell 370 Parallel Field
Note (4): Assumes that all sources are in the range z=2.5-11
Note (5): * indicates that for a flat redshift prior, the EAZY
photometric redshift code (Brammer+, 2008ApJ...686.1503B 2008ApJ...686.1503B) estimates
that this source shows at least a 68% probability for having a redshift
significantly lower than the nominal low-redshift limit for a sample,
i.e., z<1, z<1, z<2.5, z<3.5, z<4.4, z<5.4, z<6.3, z<7, and z<8 for
candidate z∼2, z∼3, z∼4, z∼5, z∼6, z∼7, z∼8, z∼9, and z∼10 galaxies,
respectively.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 15-Nov-2021