J/ApJ/566/744 EEMSS new X-ray clusters (Lewis+, 2002)
New X-ray clusters in the EINSTEIN Extended Medium-Sensitivity Survey.
I. Modifications to the X-ray luminosity function.
Lewis A.D., Stocke J.T., Ellingson E., Gaidos E.J.
<Astrophys. J. 566, 744 (2002)>
=2002ApJ...566..744L 2002ApJ...566..744L
ADC_Keywords: Clusters, galaxy ; X-ray sources
Keywords: galaxies: clusters: general - surveys - X-rays: general
Abstract:
The complete ensemble of Einstein Imaging Proportional Counter (IPC)
X-ray images has been reprocessed and reanalyzed using a multiaperture
source detection algorithm. A catalog of 772 new source candidates
detected within the 38' diameter central regions of the 1435 IPC
fields comprising the Extended Medium-Sensitivity Survey (EMSS) has
been compiled. By comparison, 478 EMSS sources fall within the same
area of sky. A randomly selected subsample of 133 fields was examined;
73 sources were detected and compared with 49 original EMSS sources in
the same region of sky.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 62 74 New sources in the randomly selected subset of 133
EMSS (Extended Medium-Sensitivity Survey) IPC fields
table7.dat 59 13 X-ray data for sources from the ramp subsample
table9.dat 59 20 X-ray data for sources observed in the high
flux and S/N subsample
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See also:
IX/15 : Einstein EMSS Survey (Gioia+ 1990, Stocke+ 1991)
Byte-by-byte Description of file: table3.dat table7.dat table9.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- [LSE2002] Sequential number
5 A1 --- n_[LSE2002] [b] b: Source was removed from the random
subsample; see Section 3.2 of paper
7- 8 I2 h RAh Right ascension (J2000)
10- 11 I2 min RAm Right ascension (J2000)
13- 17 F5.2 s RAs Right ascension (J2000)
19 A1 --- DE- Declination sign (J2000)
20- 21 I2 deg DEd Declination (J2000)
23- 24 I2 arcmin DEm Declination (J2000)
26- 29 F4.1 arcsec DEs Declination (J2000)
31- 35 I5 --- Seq Sequence number
37- 38 I2 10-3s-1 CR1 First Count rate in the 0.3-3.5 keV band
40- 41 I2 10-3s-1 CR2 Second Count rate in the 0.3-3.5 keV band
43- 44 I2 10-3s-1 CR3 Third Count rate in the 0.3-3.5 keV band
46- 49 F4.2 10-3s-1 e_CR1 rms uncertainty on CR1 (1)
51- 54 F4.2 10-3s-1 e_CR2 rms uncertainty on CR2 (1)
56- 59 F4.2 10-3s-1 e_CR3 rms uncertainty on CR3 (1)
61- 62 A2 --- Type Identification of the source (2)
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Note (1): An entry of zero indicates a value less than the detection
threshold limit of 2.5.
Note (2): Identification based on all the data in Tables 4-6 as follows:
C = cluster of galaxies
X = not a cluster of galaxies;
C: = possible cluster of galaxies
If there is no entry, no definitive determination is possible at this time.
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Table 4: Identifications or Counterparts for Random Subsample Sources
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No ID or Counterpart E Reference
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64 Radio: NVSS 002349.97 +171717; 17mJy
97 Radio: 87GB 00352.2+291502 1991, Cat. VIII/14,
Gregory & Condon
97 Galaxy group: NGC 0181/0183/0184 (z=0.018) C 1976ApJS...31..187D 1976ApJS...31..187D,
Dressel & Condon
163 QSO: 0050+0123 (z=1.439) A 1995AJ....109.1498H 1995AJ....109.1498H,
Hewett et al.
299 Star: PPM 183386 (V=10.0) S
299 Radio: PMN J0123-0348 1995, Cat. VIII/38,
Griffith et al.
1955 AGN: EXO 1156.3+3239 (z=0.215) A 1991ApJ...378...77G 1991ApJ...378...77G,
Giommi et al.
2282 Star: HD 112221 (GV, V=9.10, B-V=0.45) S 1994, Cat. J/A+AS/106/257
Olsen
4359 Galaxy group related to A665 (z=0.20) C this paper
Source was removed from the random subsample, for being target related;
see Chap. 3.2
5101 Star: SAO 17771 (K2, V=9.3, B-V=1.4) S
5187 IRAS: 21586-5652; probable AGN A 1990, Cat. II/156,
Moshir et al.
5208 Star: EXO 2251.1-1737 (V=16) S 1991ApJ...378...77G 1991ApJ...378...77G,
Giommi et al.
5223 QSO: HB89 2314-423 (z=0.27) A 1987ApJS...63....1H 1987ApJS...63....1H,
Hewitt & Burbidge
5341 Star: Gliese 1416 K2 double (V=9.8, B-V=1.2) S 1994, Cat. J/A+AS/106/377
Couteau & Gili
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Note: E: Identification of the source based on the information available:
C = cluster of galaxies
A = AGN
S = star
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History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 19-Apr-2002