J/A+A/568/A5 XDCP J0044.0-2033 J and Ks images (Fassbender+, 2014)
Galaxy population properties of the massive X-ray luminous galaxy cluster
XDCP J0044.0-2033 at z=1.58. Red-sequence formation, massive galaxy assembly,
and central star formation activity.
Fassbender R., Nastasi A., Santos J.S., Lidman C., Verdugo M., Koyama Y.,
Rosati P., Pierini D., Padilla N., Romeo A.D., Menci N., Bongiorno A.,
Castellano M., Cerulo P., Fontana A., Galametz A., Grazian A., Lamastra A.,
Pentericci L., Sommariva V., Strazzullo V., Suhada R., Tozzi P.
<Astron. Astrophys. 568, A5 (2014)>
=2014A&A...568A...5F 2014A&A...568A...5F
ADC_Keywords: Clusters, galaxy ; Galaxies, radio ; Photometry, infrared
Keywords: X-rays: galaxies: clusters -
galaxies: clusters: individual: XDCP J0044.0-2033 -
galaxies: ellipticals and lenticular, cD - galaxies: evolution -
galaxies: formation - galaxies: luminosity function, mass function
Abstract:
Recent observational progress has enabled the detection of galaxy
clusters and groups out to very high redshifts and for the first time
allows detailed studies of galaxy population properties in these
densest environments in what was formerly known as the "redshift
desert" at z>1.5.
We aim to investigate various galaxy population properties of the
massive X-ray luminous galaxy cluster XDCP J0044.0-2033 at z=1.58,
which constitutes the most extreme currently known matter-density peak
at this redshift.
We analyzed deep VLT/HAWK-I near-infrared data with an image quality
of 0.5" and limiting Vega magnitudes (50% completeness) of 24.2
in J- and 22.8 in the Ks band, complemented by similarly deep Subaru
imaging in i and V, Spitzer observations at 4.5um, and new
spectroscopic observations with VLT/FORS 2.
Description:
The cluster field of XDCP J0044.0-2033 was observed with VLT/HAWK-I
on 27 June 2011 and 08 August 2011 with the J- and Ks-band filters
under excellent observing conditions with 0.5" seeing (program ID
087.A-0351).
Objects:
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RA (2000) DE Designation(s)
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00 44 05.20 -20 33 59.7 XDCP J0044.0-2033 = 2XMM J004405.2-203359
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 49 7 Spectroscopically confirmed secure member galaxies
of the cluster XDCP J0044.0-2033
fig9.dat 22 30 Observed galaxy luminosity functions in the J- and
Ks-band for XDCP J0044.0-2033 extracted within a
cluster-centric radius of 30" (∼250kpc)
list.dat 123 3 List of FITS images
fits/* . 3 Individual fits images
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- ID Object identification
4- 11 F8.5 deg RAdeg Right ascension (J2000)
13- 21 F9.5 deg DEdeg Declination (J2000)
23- 28 F6.4 --- zsp [1.56/1.60] Spectroscopic redshift
(uncertainty σz≃0.0005)
30- 33 F4.1 arcsec dcen [8/93] Cluster-centric distance
35- 39 F5.2 mag Ks Total Ks magnitude (Vega) (1)
41- 44 F4.2 mag J-Ks J-Ks colour index (Vega) within 1" aperture (1)
46- 49 F4.2 mag i-Ks i-Ks colour index (Vega) within 1" aperture (1)
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Note (1): The Ks magnitude of ID 3b is given for a 1" aperture since there
is no clear separation from the main component 3a. All galaxies but ID
1 exhibit a detected [OII] emission line.
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Byte-by-byte Description of file: fig9.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- Band [J Ks] Observed band
4- 8 F5.2 mag Bin [16.25/23.75] Center of magnitude bin
(width=0.5mag; in Vega system)
10- 15 F6.3 --- N Number of galaxies in Bin
18- 22 F5.3 --- e_N rms uncertainty on N
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 24 F5.3 arcsec/pix Scale [0.106] Scale of the image
26- 29 I4 --- Nx [4476] Number of pixels along X-axis
30 A1 --- --- [x]
31- 34 I4 --- Ny [4446] Number of pixels along Y-axis
36- 39 F4.2 arcsec See ? Seeing
41- 46 F6.3 mag ZP [28.2/29.1]? ZeroPoint (Vega) (1)
48- 52 F5.3 mag e_ZP ? rms uncertainty on ZP (1)
54- 58 I5 Kibyte size [77746] Size of FITS file
60- 88 A29 --- FileName Name of the FITS image in subdirectory fits
90-123 A34 --- Title Title of the file
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Note (1): Zeropoints are in the Vega system.
AB System offsets: AB=Vega+offsetAB, with KsAB=1.855, JAB=0.857
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Acknowledgements:
Rene Faabender, rfassben(at)mpe.mpg.de
(End) Patricia Vannier [CDS] 23-Jun-2014