J/ApJS/126/209 Bright SHARC survey cluster catalog (Romer+, 2000)
The bright SHARC survey: the cluster catalog.
Romer A.K., Nichol R.C., Holden B.P., Ulmer M.P., Pildis R.A.,
Merrelli A.J., Adami C., Burke D.J., Collins C.A., Metevier A.J., Kron R.G.,
Commons K.
<Astrophys. J. Suppl. Ser. 126, 209 (2000)>
=2000ApJS..126..209R 2000ApJS..126..209R
ADC_Keywords: Galaxy catalogs ; Clusters, galaxy ; X-ray sources
Mission_Name: ROSAT
Keywords: catalogs - galaxies: clusters: general -
galaxies: distances and redshifts - surveys - X-rays: galaxies
Abstract:
We present the Bright SHARC (Serendipitous High-Redshift Archival
ROSAT Cluster) Survey, which is an objective search for
serendipitously detected extended X-ray sources in 460 deep ROSAT PSPC
pointings. The Bright SHARC Survey covers an area of 178.6 deg2 and
has yielded 374 extended sources. We discuss the X-ray data reduction,
the candidate selection and present results from our on-going optical
follow-up campaign. The optical follow-up concentrates on the
brightest 94 of the 374 extended sources and is now 97% complete. We
have identified 37 clusters of galaxies, for which we present
redshifts and luminosities. The clusters span a redshift range of
0.0696<z<0.83 and a luminosity range of 0.065<LX< 8.3x1044ergs/s
[0.5-2.0keV] (assuming H0=50km/s/Mpc and q0=0.5). Twelve of the
clusters have redshifts greater than z=0.3, eight of which are at
luminosities brighter than LX=3x1044ergs/s. Seventeen of the 37
optically confirmed Bright SHARC clusters have not been listed in any
previously published catalog. We also report the discovery of three
candidate "fossil groups" of the kind proposed by Ponman et al.
(1994Natur.369..462P 1994Natur.369..462P)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 115 94 Extended Sources in the Bright SHARC Survey
refs.dat 120 21 References of Table1
table2.dat 114 37 Bright SHARC Cluster Catalog
notes.dat 80 30 Individual notes on table2
table3.dat 44 11 Comparison of Bright SHARC and V98
flux measurements
table4.dat 71 460 ROSAT PSPC Pointings in the Bright SHARC Survey
table5.dat 72 178 ROSAT PSPC Pointings Excluded from the
Bright SHARC Survey
table6.dat 57 374 The 374 Extended Sources in the SHARC Survey
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See also:
IX/11 : ROSAT Source Catalog (Voges+ 1994)
J/MNRAS/341/1093 : The Southern SHARC catalogue (Burke+, 2003)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- RXJ Source designation
17- 18 I2 h RAh Right ascension (J2000)
20- 21 I2 min RAm Right ascension (J2000)
23- 26 F4.1 s RAs Right ascension (J2000)
28 A1 --- DE- Declination sign (J2000)
29- 30 I2 deg DEd Declination (J2000)
32- 33 I2 arcmin DEm Declination (J2000)
35- 38 F4.1 arcsec DEs Declination (J2000)
40- 44 F5.2 10-2ct/s CRw Wavelet count-rate
46- 56 A11 --- Pointing Pointing in which the source was detected
58- 68 A11 --- Type Source type
70- 73 A4 --- Code Method used to identify the source (1)
75- 80 F6.4 --- z ?Redshift
82- 83 I2 --- r_z ?Reference of redshift, in file "refs.dat"
85-116 A32 ---- Note Notes (2)
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Note (1): Method used to identify the source:
C: CCD imaging
D: DSS images played a role in the identification of a source
N: NED yielded information was used during the source identification
O: Spectroscopy from private communications
S: Spectroscopic follow up by the SHARC collaboration
X: X-ray images played a role in the identification of a source
Note (2): Alternate source names and redshifts.
A = Abell clusters (Abell, 1958, See Cat. VII/4; Abell et al., 1989,
Cat. VII/110) are denoted by "A."
MS = EMSS sources (Stocke et al., 1991, Cat. IX/15)
V = 160 deg2 clusters (Vikhlinin et al., 1998, Cat. J/ApJ/502/5580
HCG = Hickson groups (Hickson, 1982, Cat. VII/213)
Z = Zwicky clusters (Zwicky, Herzog, & Wild, 1968, Cat. VII/4).
When an object is listed in more than one catalog, we have defaulted
to the name given in the older catalog, e.g., for RX J0237.9 we have
listed the Abell number (A3038), not the V98 number (V28).
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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 [1,36] Reference number
4-120 A117 --- Text Text of reference
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- RXJ Source designation
17- 22 F6.4 --- z Redshift
24- 28 F5.2 10+20cm-2 nH Hydrogen column density
30- 34 F5.2 pix Maxis Major axis (1 pix = 14.947")
36- 39 F4.2 pix maxis Minor axis (1 pix = 14.947")
41- 45 F5.2 pix OAxis Off-axis angle of the cluster centroid
(1 pix = 14.947")
47- 51 F5.3 10-2ct/s CRw Wavelet count-rate
53- 58 F6.3 10-2ct/s CRt Total count-rate
60- 63 F4.1 % e_CRt Percentage error on CRt
65- 69 F5.2 arcsec r80 Aperture containing 80% of the flux from
a model cluster profile
71- 75 F5.3 --- f80 Fraction of r80 aperture used to measure
the cluster count rate
77- 82 F6.3 10-16W/m2 f-13 Total flux (in 10-13erg.cm2/s)
84- 89 F6.4 10+37W L44 Luminosity (in 10+44erg/s)
91 I1 keV Temp Temperature used to derive the flux and
luminosity
93-100 A8 --- Name Alternative cluster names
102-112 A11 --- Pointing Pointing in which the source was detected
114 A1 --- Notes [a-i] Notes detailed in file "notes.dat"
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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2 A1 --- Note [a-i] Note number
3 A1 --- --- [:]
5- 80 A76 --- Text Text of note
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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- 15 A15 --- RXJ Bright SHARC designation
17- 20 A4 --- V98 Vikhlinin et al. (1998, Cat. J/ApJ/502/558)
designation ([VMF98] NNN in Simbad)
22- 27 F6.4 --- z Redshift
29- 34 F6.3 10-16W/m2 f-13 Total flux (1)
36- 39 F4.2 --- Ratio Ratios of the Bright SHARC fluxes to the
V98 fluxes (1)
41- 44 F4.2 --- Ratioc Ratios of the recalculated Bright SHARC fluxes
to the V98 fluxes (See Sect. 7.1 for details)
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Note (1): Average values:
<f-13≥1.18x10-16W/m2, Ratio=1.01
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Byte-by-byte Description of file: table4.dat table5.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Pointing Pointing designation
13- 14 I2 h RAh Right ascension (J2000)
16- 17 I2 min RAm Right ascension (J2000)
19- 22 F4.1 s RAs Right ascension (J2000)
24 A1 --- DE- Declination sign (J2000)
25- 26 I2 deg DEd Declination (J2000)
28- 29 I2 arcmin DEm Declination (J2000)
31- 34 F4.1 arcsec DEs Declination (J2000)
36- 40 F5.1 deg GLAT Galactic latitude
42- 46 I5 s Time Exposure Time
48- 71 A24 --- Target Pointing target
72 A1 --- Reject Reject code for table5 (1)
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Note (1): Reject code:
M: The pointing is close (<6°) to the Magellanic clouds.
O: An extended optical source covers most of the field of view.
X: An extended X-ray source covers most of the field of view.
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- RXJ Source designation
17- 18 I2 h RAh Right ascension (J2000)
20- 21 I2 min RAm Right ascension (J2000)
23- 26 F4.1 s RAs Right ascension (J2000)
28 A1 --- DE- Declination sign (J2000)
29- 30 I2 deg DEd Declination (J2000)
32- 33 I2 arcmin DEm Declination (J2000)
35- 38 F4.1 arcsec DEs Declination (J2000)
40- 45 F6.3 10-2ct/s CRw Wavelet count-rate
47- 57 A11 --- Pointing Pointing designation
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History: From ApJS electronic version
(End) James Marcout, Patricia Bauer [CDS] 22-May-2000