J/A+A/378/30 ROSAT-BSC galaxy identifications (Zimmermann+, 2001)
Galaxy identifications in the ROSAT All-Sky Survey.
Zimmermann H.-U., Boller T., Doebereiner S., Pietsch W.
<Astron. Astrophys. 378, 30 (2001)>
=2001A&A...378...30Z 2001A&A...378...30Z
ADC_Keywords: X-ray sources ; Galaxies, optical ; Cross identifications
Keywords: surveys - X-rays - galaxies: general
Description:
In a correlation study of the ROSAT All-Sky Survey Bright Source
Catalogue (RASS-BSC, Cat. <XI/10>) with the Catalogue of Principal
Galaxies (PGC, Cat. VII/119) 904 X-ray sources were found that
possess possible extragalactic counterparts within a search radius of
100".
File table1 contains 1124 optical galaxy entries and 904 relevant
X-ray candidates/counterparts from the ROSAT All-Sky Survey. Besides a
compilation of X-ray and optical parameters for each source, also the
results of an identification screening are given. 547 optical/X-ray
correlations have been quoted as reliable identifications. The 904
optical images with X-ray overlay contours (xID_nnn.ps.gz) used in the
screening process are added for each user's own judgement.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 307 1124 Galaxy list
images/* . 904 Individual optical images with X-ray overlay
contours
--------------------------------------------------------------------------------
See also:
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)
VII/119 : Catalogue of Principal Galaxies (PGC) (Paturel+ 1989)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- Seq Running number in table
6- 8 I3 --- XID Identification number of X-ray object
related to image number (1)
11- 12 I2 --- SID [1,10] Identifies the optical candidate
for a specific X-ray source
14- 17 A4 --- --- [1RXS]
19- 34 A16 --- 1RXS 1RXS (Cat. IX/10) identifier for the
X-ray source
36- 37 I2 h RAh X-ray source right ascension (J2000)
39- 40 I2 min RAm X-ray source right ascension (J2000)
42- 46 F5.2 s RAs X-ray source right ascension (J2000)
48 A1 --- DE- X-ray source declination sign (J2000)
49- 50 I2 deg DEd X-ray source declination (J2000)
52- 53 I2 arcmin DEm X-ray source declination (J2000)
55- 58 F4.1 arcsec DEs X-ray source declination (J2000)
60- 67 I8 s Exp Exposure time of X-ray source
69- 77 I9 arcsec e_DEs Uncertainty of X-ray position
79- 86 F8.5 ct/s CRate Count rate of X-ray source
88- 95 F8.5 ct/s e_CRate Uncertainty of rate
97-100 I4 --- LH Likelihood of detection
102-107 F6.1 ct Counts Total counts from X-ray source
109-114 I6 --- LHext Likelihood that X-ray source is extended
(interpret with care !)
116-121 I6 arcsec Extent Extent in arcsec
123-147 A25 --- OName Name of optical candidate
149-150 I2 h RAoh Optical candidate right ascension (J2000)
152-153 I2 min RAom Optical candidate right ascension (J2000)
155-159 F5.2 s RAos Optical candidate right ascension (J2000)
161 A1 --- DEo- Optical candidate declination sign (J2000)
162-163 I2 deg DEod Optical candidate declination (J2000)
165-166 I2 arcmin DEom Optical candidate declination (J2000)
168-172 F5.2 arcsec DEos Optical candidate declination (J2000)
174-178 F5.2 mag Bmag ? B magnitude of optical candidate
180-186 F7.1 arcsec e_DEos ? Optical position uncertainty
188-193 A6 --- Type Type of optical candidate
195-209 A15 --- Type1 Detailed type of optical candidate
211-218 A8 --- Activity type of activity (optical)
220-227 F8.0 km/s Vrec ? Recession velocity
229-230 I2 --- Origin Origin of parameters (2)
232-233 I2 --- Class Classification (3)
235-239 F5.3 10+22/cm+2 NH Galactic hydrogen column density
241-245 F5.1 arcsec Dist Distance between X-ray object and
optical candidate
247-255 F9.2 [mW/m2] logFX log10 of X-ray flux in the 0.1-2.4keV
X-ray band
257-262 F6.2 [10-7W] logLX ? log10 of X-ray luminosity using
H0=70km/Mpc/s
264-275 A12 --- Corr Reliability of correlating the X-ray and
optical source
277-307 A31 --- Comment Comments (4)
--------------------------------------------------------------------------------
Note (1): The XID number defines the figure number in "images" subdirectory,
e.g. XID 23 has the image xID_023.ps
Note (2): Origin of parameters:
0 from PGC only,
1 from NED,
11 from NED + (Pietsch et al., 1998A&A...333...48P 1998A&A...333...48P),
21 from NED + (Bischoff et al., 1999, in Highlights in X-ray
Astronomy in honour of Joachim Truemper's 65th birthday, ed.
B. Aschenbach, & M. J. Freyberg, MPE Report, 272, 22)
Note (3): Whether galaxy is
0 in binary,
2 in group,
3 in cluster of galaxies or near to line-of-sight projection
towards cluster of galaxies
Note (4): cl? means source belongs to the "suspected cluster sample"
--------------------------------------------------------------------------------
Acknowledgements: "Hans-Ulrich Zimmermann, MPE Garching"
(End) Patricia Bauer [CDS] 18-Oct-2001