J/ApJ/594/154 160 square degree ROSAT survey (Mullis+, 2003)
The 160 square degree ROSAT survey: the revised catalog of 201 clusters with
spectroscopic redshifts.
Mullis C.R., McNamara B.R., Quintana H., Vikhlinin A., Henry J.P.,
Gioia I.M., Hornstrup A., Forman W., Jones C.
<Astrophys. J. 594, 154 (2003)>
=2003ApJ...594..154M 2003ApJ...594..154M
ADC_Keywords: Surveys ; Clusters, galaxy ; Redshifts ; X-ray sources
Keywords: catalogs - galaxies: clusters: general - surveys -
X-rays: galaxies: clusters
Abstract:
We present the revised catalog of galaxy clusters detected as extended
X-ray sources in the 160 Square Degree ROSAT Survey, including
spectroscopic redshifts and X-ray luminosities for 200 of the 201
members. The median redshift is zmedian=0.25, and the median X-ray
luminosity is LX,median=4.2x1043h502erg/s (0.5-2.0keV). This
is the largest high-redshift sample of X-ray-selected clusters
published to date. There are 73 objects at z>0.3 and 22 objects at
z>0.5 drawn from a statistically complete flux-limited survey with a
median object flux of 1.4x10-13erg/cm2/s. We describe the optical
follow-up of these clusters with an emphasis on our spectroscopy,
which has yielded 155 cluster redshifts, 110 of which are presented
here for the first time. These measurements, combined with 45 from the
literature and other sources, provide near-complete spectroscopic
coverage for our survey. We discuss the final optical identifications
for the extended X-ray sources in the survey region and compare our
results to similar X-ray cluster searches.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 129 223 160 square degree ROSAT Survey Cluster Catalog
refs.dat 71 26 References
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name Object name (RXJHHMM.m+DDMM)
16- 18 I3 --- [VMF98] Object number (1)
20- 21 I2 h RAh Hour of Right Ascension (J2000)
23- 24 I2 min RAm Minute of Right Ascension (J2000)
26- 29 F4.1 s RAs Second of Right Ascension (J2000)
31 A1 --- DE- Sign of the Declinatin (J2000)
32- 33 I2 deg DEd Degree of Declination (J2000)
35- 36 I2 arcmin DEm Arcminute of Declination (J2000)
38- 39 I2 arcsec DEs Arcsecond of Declination (J2000)
41- 42 I2 arcsec e_Pos Positional uncertainty (2)
44- 46 I3 arcsec Rad Angular core radius (3)
48- 49 I2 arcsec e_Rad Uncertainty in Rad
51- 55 F5.1 10-14mW/m2 Flux Total 0.5-2.0keV unabsorbed X-ray flux
in units of 10-14erg/cm2/s
57- 60 F4.1 10-14mW/m2 e_Flux Uncertainty in Flux
62- 65 F4.2 10+37W Lum ? Cluster 0.5-2.0keV luminosity in units
of 1044erg/s/h502
67- 71 F5.3 --- z ? Redshift
73- 74 I2 --- r_z ? Redshift reference
76 A1 --- f_z [F] Indicates a likely false detection due
to blends of unresolved X-ray point sources
78-119 A42 --- Notes Additional notes
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Note (1): Identification used by Vikhlinin et al., 1998ApJ...502..558V 1998ApJ...502..558V
Note (2): In terms of the radius for the 90% confidence X-ray position
error circle.
Note (3): Based on a β-model fit with β=2/3.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode BibCode
24- 43 A20 --- Aut Author's name
45- 66 A22 --- Com Comments
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 24-Oct-2003