J/MNRAS/381/1369 Redshifts in Subaru/XMM Deep Field (Geach+, 2007)
Low-power radio galaxy environments in the Subaru/XMM-Newton Deep Field
at z∼0.5.
Geach J.E., Simpson C., Rawlings S., Read A.M., Watson M.
<Mon. Not. R. Astron. Soc., 381, 1369-1380 (2007)>
=2007MNRAS.381.1369G 2007MNRAS.381.1369G
ADC_Keywords: Galaxies, radio ; Photometry ; Redshifts
Keywords: galaxies: evolution - cosmology: observations
Abstract:
We present multiobject spectroscopy of galaxies in the immediate
(Mpc-scale) environments of four low-power (L1.4GHz~<1025W/Hz)
radio galaxies at z∼0.5, selected from the Subaru/XMM-Newton Deep
Field. We use the spectra to calculate velocity dispersions and
central redshifts of the groups the radio galaxies inhabit, and
combined with XMM-Newton (0.3-10keV) X-ray observations investigate the
LX-σv and TX-σv scaling relationships. All the
radio galaxies reside in moderately rich groups - intermediate
environments between poor groups and rich clusters, with remarkably
similar X-ray properties.
Description:
The SXDF incorporates a deep, large-area X-ray mosaic with XMM-Newton,
consisting of seven overlapping pointings covering ∼1.3deg2 region
of the high Galactic latitude sky with an exposure time of 100ks in
the central field (in separate exposures) and 50ks in the flanking
fields. Four of the pointings were carried out in 2000 August, and the
remaining three were made in 2002 August and 2003 January.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 78 46 Spectroscopic targets with total z'-band
magnitudes and cross-correlated redshifts
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See also:
J/MNRAS/372/741 : SXDF 100µJy catalogue (Simpson+, 2006)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Target Radio galaxy target (JEG N) name (1)
7- 20 A14 --- [GSR2007] Name (SXDF-iE-NNNNNN or SXDF-iS-NNNNNN)
21 A1 --- n_[GSR2007] [*] * for the radio galaxy
23- 24 I2 h RAh Right ascension (J2000)
26- 27 I2 min RAm Right ascension (J2000)
29- 34 F6.3 s RAs Right ascension (J2000)
36 A1 --- DE- Declination sign (J2000)
37- 38 I2 deg DEd Declination (J2000)
40- 41 I2 arcmin DEm Declination (J2000)
43- 47 F5.2 arcsec DEs Declination (J2000)
49- 53 F5.2 mag z'mag z' magnitude
55- 60 F6.4 --- z Spectroscopic redshift
62- 67 F6.4 --- E_z Error on z (upper limit) (2)
69- 74 F6.4 --- e_z Error on z (lower limit) (2)
76- 77 A2 --- Memb Membership code (m: member, nm:non-member)
78 A1 --- n_Memb [b] Note (3)
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Note (1): Targets, identified as [GSR2007] JEGn in Simbad (n=1..4) are:
JEG 1 = VLA J02194504535, at 02:19:45.3-04:53:33 (J2000.0)
JEG 2 = VLA J02182305250, at 02:18:23.5-05:25:00 (J2000.0)
JEG 3 = VLA J02173705134, at 02:17:37.2-05:13:28 (J2000.0)
JEG 4 = VLA J02184205328, at 02:18:42.1-05:32:51 (J2000.0)
Note (2): Derived from the topology of the cross-correlation peak.
Note (3): b: serendipitous lensed source on slit, z=1.847.
See Fig. 7 and Section 4.2
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 11-Feb-2008