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1997AJ....113.2134Oppenheimer+
IX/18 EINSTEIN extended source survey (EXSS) (Oppenheimer+ 1997)
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A survey of the EINSTEIN IPC Database for extended X-ray sources.
Oppenheimer B.R., Helfand D.J., Gaidos E.J.
Astron. J. 113, 2134-2146 (1997)
=1997AJ....113.2134O (SIMBAD/NED BibCode)
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ADC_Keywords: X-ray sources ; Clusters, galaxy ;
Mission_Name: Einstein
Description:
This catalog contains sources from data collected by the IPC on board
the EINSTEIN Observatory. This survey is designed to find extended
sources and diffuse emission rather than point sources. In addition,
the source detection algorithm is substantially improved over that
used by EMSS. Sources were searched using circular apertures up to
6.1arcmin. The catalog contains 1326 extended source candidates at high
galactic latitude (|b| > 20{deg}).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog 328 1325 The EXSS Catalogue
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See also:
I/146 : Positions and Proper Motions (PPM-North)
I/193 : Positions and Proper Motions (PPM-South)
I/208 : Positions and Proper Motions (PPM-90000 Supplement)
VII/4 : Abell and Zwicky Clusters of Galaxies
IX/13 : 2E Catalogue (Harris+ 1994)
IX/15 : Einstein extended medium-sensitivity survey (EMSS)
telnet://einline@einline.harvard.edu/ : the EINLINE data-base
Byte-by-byte Description of file: catalog
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Bytes Format Units Label Explanations
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1- 16 A16 --- Name !+ EXSS source name
19- 27 F9.7 rad RArad Right Ascension (B1950.0)
29- 38 F10.7 rad DErad Declination (B1950.0)
40- 45 F6.3 ct/s cts1 IPC photon counts per second for the
aperture 1 detection (0.000 = no detection)
47- 52 F6.3 ct/s cts2 IPC photon counts per second for the
aperture 2 detection (0.000 = no detection)
54- 59 F6.3 ct/s cts3 IPC photon counts per second for the
aperture 3 detection (0.000 = no detection)
61- 66 F6.3 ct/s cts4 IPC photon counts per second for the
aperture 3 detection (0.000 = no detection)
68- 73 F6.2 --- S/N1 ?=0.00 Signal to noise ratio for aperture 1
75- 80 F6.2 --- S/N2 ?=0.00 Signal to noise ratio for aperture 2
82- 87 F6.2 --- S/N3 ?=0.00 Signal to noise ratio for aperture 3
89- 94 F6.2 --- S/N4 ?=0.00 Signal to noise ratio for aperture 4
98-102 F5.2 arcsec dRA1 Offset in right ascension of the
aperture 1 detection from the assumed
object position (columns 1 and 2), which
is found through the technique described
in the paper
106-110 F5.2 arcsec dDE1 Offset in declination for aperture 1
114-118 F5.2 arcsec dRA2 Offset in right ascension for aperture 2
122-126 F5.2 arcsec dDE2 Offset in declination for aperture 2
130-134 F5.2 arcsec dRA3 Offset in right ascension for aperture 3
138-142 F5.2 arcsec dDE3 Offset in declination for aperture 3
146-150 F5.2 arcsec dRA4 Offset in right ascension for aperture 4
154-158 F5.2 arcsec dDE4 Offset in declination for aperture 4
161-166 I6 --- PPM ?=-99 Star number from the Positions and
Proper Motions (PPM) Catalog (<I/146>,
<I/193> and <I/208>) for the star which
is identified with the EXSS source.
168-173 F6.2 mag Vmag ?=-99.00 V band magnitude of the PPM star
176-181 F6.2 arcsec dRA11 ?=-99.00 Right ascension difference between
PPM and EXSS positions
184-189 F6.2 arcsec dDE11 ?=-99.00 Declination difference between the
PPM and EXSS positions
191-203 A13 --- EMSS EMSS source <IX/15> identified with
the EXSS source
205-208 A4 --- Typ11 Type of the EMSS source (from EMSS catalog)
211-215 F5.1 --- S/N11 ?=-99.0 Signal to noise ratio of the EMSS
source with the EMSS detection algorithm
218-223 F6.2 arcsec dRA12 ?=-99.00 Right ascension difference between
the EMSS and the EXSS positions
226-231 F6.2 arcsec dDE12 ?=-99.00 Declination difference between
the EMSS and the EXSS positions
234-245 A12 --- ZwCl Zwicky cluster of galaxies identified with
the EXSS source (see cat. <VII/4>)
249-253 F5.1 arcsec Size ?=-99.0 Approximate size of the Zwicky
cluster (from the Zwicky catalog)
256-261 F6.2 arcsec dRA13 ?=-99.00 Right ascension difference between
ZwCl and EXSS positions.
264-269 F6.2 arcsec dDE13 ?=-99.00 Declination difference between
ZwCl and EXSS positions.
273-282 A10 --- Abell Abell cluster of galaxies identified with
the EXSS source (see cat. <VII/4>)
286-291 F6.2 arcsec dRA14 ?=-99.00 Right ascension difference between
Abell and EXSS positions
294-299 F6.2 arcsec dDE14 ?=-99.00 Declination difference between
Abell and EXSS positions
301-304 A4 --- Typ14 The type of the corresponding source in
the EINLINE database that is identified
with the EXSS source (1)
308-313 F6.2 arcsec dRA15 ?=-99.00 Right ascension difference between
EINLINE and EXSS positions
316-321 F6.2 arcsec dDE15 ?=-99.00 Declination difference between
EINLINE and EXSS positions
323-328 F6.2 arcsec2 d2 ?=140.01 The quadratic sum of dRA15 and dDE15
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Note (1): to enter the EINLINE service, telnet to einline.harvard.edu
login as 'einline', with no password
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History:
From http://astro.caltech.edu/~bro/exss/exss.html
================================================================================
(End) Jean-Marie Hameury, Francois Ochsenbein [CDS] 27-Aug-1997