J/MNRAS/511/4882 UVW1 galaxy sources in CDFS deep field (Sharma+, 2022)
Galaxy luminosity functions at redshifts 0.6-1.2 in the Chandra Deep Field
South.
Sharma M., Page M.J., Breeveld A.A.
<Mon. Not. R. Astron. Soc. 511, 4882-4899 (2022)>
=2022MNRAS.511.4882S 2022MNRAS.511.4882S (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; Photometry, ultraviolet ; Redshifts ;
Spectroscopy ; Surveys ; Combined data
Keywords: galaxies: evolution - galaxies: luminosity function, mass function
Abstract:
We present the rest-frame ultraviolet (UV) galaxy luminosity function
(LF) and luminosity density (LD) measurements in the far-UV (1500
Å) wavelength, in the redshift range z = 0.6-1.2. The UV LF is
derived using XMM-Newton Optical Monitor (XMM-OM), UV (1600-4000 Å)
observations of the Chandra Deep Field South, over an area of 396
arcmin2. Using the deep UV imaging of the CDFS, we identified > 2500
galaxies in our sample with UVW1AB ≤ 24.5 mag. This sample, along
with various other catalogues containing redshift information, is used
to calculate the binned representation of the galaxy UV LF in the two
redshift bins 0.6 ≤ z < 0.8 and 0.8 ≤ z < 1.2, having a wide range
of 1500 Å rest-frame UV magnitudes (ΔM1500 ~= 3),
reaching ~= 1-1.5 magnitudes fainter than previous studies at similar
redshifts. The binned LF is described well by the Schechter function
form. Using maximum-likelihood, the Schechter function is fitted to
the unbinned data to obtain the best-fitting values of the the UV
galaxy LF parameters. We find that characteristic magnitude M*
brightens by 0.8 mag from z = 0.7 to z = 1, implying an increase in
the star formation activity between these redshifts, as reported by
past studies. Our estimate of the faint- end slope
-1.10{+0.19}{-0.18} is on the shallower side compared with
previous studies at z = 0.7, whereas a value of
-1.56{+0.19}{-0.18} estimated for z = 1.0, agrees with previous
results given the uncertainties.
Description:
In this paper we use observations of the CDFS from the UVW1 filter on
XMM-OM. The UVW1 filter on the XMM-OM has a central wavelength 2900 Å
and samples the 1500 Å flux better than GALEX at redshift z = 1, in
this redshift range, XMM-OM can be used to put better constraints on
the UV LF parameters over larger fields than covered by the HST UV
instrumentation and at a better spatial resolution compared with
GALEX. We mainly compare our results to Arnouts et al.
(2005ApJ...619L..43A 2005ApJ...619L..43A), Hagen et al. (2015ApJ...808..178H 2015ApJ...808..178H), and Page et
al. (2021MNRAS.506..473P 2021MNRAS.506..473P, Cat. J/MNRAS/506/473) as they use the
similar redshift binning scheme and direct rest-frame FUV observations
for their LF estimates, (i.e see section Introduction).
The main aim of the XMM-Newton survey in the CDFS (XMM-CDFS) was to
detect and study the X-ray spectral properties of obscured X-ray
sources. In addition to the X-ray instruments, the XMM-Newton
observatory carries the XMM-OM, an optical/UV telescope with a primary
task to complement the X-ray observations. For their parts, the XMM-OM
data were obtained from the XMM-Newton Science Archive (XSA). The
reduction and processing were carried out using version 17 of the
standard XMM-Newton Science Analysis System (SAS) tools. The mosaiced
UVW1 image was then fed to the SAS task OMDETECT, which performs
photometry and source detection, using dedicated algorithms for
identifying point and extended sources. A range of apertures from 2.8
to 5.7 arcsec are used based on brightness of individual sources, as
well as their proximity on the image. We refer to Page et al.
(2021MNRAS.506..473P 2021MNRAS.506..473P, Cat. J/MNRAS/506/473; 2012MNRAS.426..903P 2012MNRAS.426..903P, Cat.
II/340, Cat. II/356, Cat. II/370, Cat. II/378) for the details on the
source detection. We finally end up with a UVW1 source list containing
3277 sources at 3σ, (i.e see section 2 Observation and data).
Here we present in the table3.dat, all UVW1mag of 1079 galaxy sources
with redshifts between 0.6 and 1.19 which are used to compute the UV
LF.
Objects:
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RA (ICRS) DE Designation(s)
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03 32 27.99 -27 48 30.0 NAME Chandra Deep Field-South = NAME CDF-S
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 39 1079 CDFS UVW1 source catalogue
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See also:
J/MNRAS/506/473 : UV luminosity functions of SFR galaxies (Page+, 2021)
II/378 : XMM-OM Serendipitous Source Survey Catalogue (XMM-SUSS6.0)
(Page+, 2023)
J/ApJ/796/60 : ECDFS galaxies photometric redshifts & counterparts
(Hsu+, 2014)
J/ApJ/801/97 : GOODS-S & UDS stellar mass catalogs from CANDELS
(Santini+, 2015)
J/ApJS/183/295 : A K-selected catalog of the ECDFS from MUSYC (Taylor+, 2009)
J/ApJS/189/270 : MUSYC optical imaging in ECDF-S (Cardamone+, 2010)
J/ApJ/742/3 : Photometric catalogs for ECDF-S and CDF-N (Rafferty+, 2011)
J/ApJS/191/124 : Optical spectroscopy of ECDF-S X-ray sources
(Silverman+, 2010)
J/A+A/512/A12 : VLT/VIMOS spectroscopy in GOODS-South field (Balestra+, 2010)
J/A+A/465/1099 : Redshift catalog of 691 objects in CDFS (Ravikumar+, 2007)
II/253 : Chandra Deep Field South: multi-colour data (Wolf+, 2008)
J/A+A/421/41 : FORS Deep Field UV to blue photometry (Gabasch+, 2004)
II/261 : GOODS initial results (Giavalisco+, 2004)
J/ApJ/803/34 : z∼4-10 galaxies from HST legacy fields (Bouwens+, 2015)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 9 F9.6 deg RAdeg Right ascension (J2000) (RA)
11- 20 F10.6 deg DEdeg Declination (J2000) (DEC)
22- 29 F8.6 --- z Source spectroscopic and photometric redshift
from literature references which are available
in the dedicated section 4.2 Ancillary data (z)
31- 39 F9.6 mag UVW1mag Source UVW1 AB magnitude calculated using
OMDETECT described in the section 2
Observation and data (UVW1mag)
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History:
From electronic version of the journal
(End) Luc Trabelsi [CDS] 03-Feb-2025