J/A+AS/136/81 A ROSAT PSPC X-Ray Survey of the SMC (Kahabka, 1999)
A ROSAT PSPC X-Ray Survey of the Small Magellanic Cloud
Kahabka P., Pietsch W., Filipovic M.D., Haberl F.
<Astron. Astrophys. Suppl. Ser. 136, 81 (1999)>
=1999A&AS..136...81K 1999A&AS..136...81K (SIMBAD/NED BibCode)
ADC_Keywords: X-ray sources ; Magellanic Clouds ; Surveys
Keywords: catalogues - Magellanic Clouds - X-rays: stars - X-rays: galaxies -
ISM: supernova remnants (SNRs)
Description:
We present the results of a systematic search for point-like and
moderately extended soft (0.1-2.4keV) X-ray sources in a raster of
nine pointings covering a field of 8.95deg2 and performed with the
ROSAT PSPC between October 1991 and October 1993 in the direction of
the Small Magellanic Cloud (SMC). We detect 248 objects which we
include in the first version of our SMC catalogue of soft X-ray
sources. We set up seven source classes defined by selections in the
count rate, hardness ratio and source extent. We find five high
luminosity super-soft sources (1E 0035.4-7230, 1E 0056.8-7146,
RX J0048.4-7332, RX J0058.6-7146 and RX J0103-7254), one
low-luminosity super-soft source RX J0059.6-7138 correlating with the
planetary nebula L357, 51 candidate hard X-ray binaries including
eight bright hard X-ray binary candidates, 19 supernova remnants
(SNRs), 19 candidate foreground stars and 53 candidate background
active galactic nuclei (and quasars). We give a likely classification
for ∼60% of the catalogued sources. The total count rate of the
detected point-like and moderately extended sources in our catalogue
is 6.9±0.3s^-1, comparable to the background subtracted total rate
from the integrated field of ∼6.1±0.1s^-1.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 136 248 List of all 248 ROSAT sources found in the SMC
--------------------------------------------------------------------------------
See also:
IX/11 : ROSAT Source Catalog (Voges+ 1994)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- Catalog Source catalog sequential number
6- 16 A11 --- RX Source ROSAT name (Cat. IX/11)
19- 20 I2 h RAh Right ascension (J2000)
22- 23 I2 min RAm Right ascension (J2000)
25- 28 F4.1 s RAs Right ascension (J2000)
31 A1 --- DE- Declination sign
32- 33 I2 deg DEd Declination (J2000)
35- 36 I2 arcmin DEm Declination (J2000)
38- 39 I2 arcsec DEs Declination (J2000)
42- 44 I3 arcsec Pe 90% confidence positional uncertainty
46- 52 F7.2 ct/ks Crate ? total count rate
54- 58 F5.2 ct/ks e_Crate ? 1-sigma error of total count rate
61- 65 F5.2 --- HR1 ? soft hardness ratio HR1
67- 71 F5.3 --- e_HR1 ? 1-sigma error of soft hardness ratio HR1
72- 77 F6.2 --- HR2 ? hard hardness ratio HR2
78- 83 F6.2 --- e_HR2 ? 1-sigma error of hard hardness ratio HR2
86- 88 I3 arcsec EXT ? source extent
90- 94 I5 --- LH ? likelihood ratio of existence
97- 98 I2 arcmin Offax off-axis angle of source
100-101 I2 --- WW ? Source number of Einstein identification
Wang & Wu, 1992ApJS...78..391W 1992ApJS...78..391W
103-104 I2 arcsec DistEinst ? Distance to Einstein source
106-110 A5 --- SpType Spectral type of Simbad star
113-116 F4.1 --- Mag ? Magnitude of Simbad identified star
118-119 I2 arcsec DistSim ? Distance to Simbad star
121-124 A4 --- Class Source classification (1)
126-127 A2 --- Class1 Refined source classification (2)
129-136 A8 --- Note Note on source classification
--------------------------------------------------------------------------------
Note (1): A: background AGN or quasar
B: hard X-ray binary
Bl: luminous hard X-ray binary
Bw: weak hard X-ray binary
D: (possible) artifact
F: foreground star
R: supernova remnant or extended structure
S: super-soft source
Sl: luminous super-soft source
Sw: weak super-soft source
Note (2): AB: class A or B (see Note 1)
H: HII region
--------------------------------------------------------------------------------
Acknowledgements: Peter Kahabka
(End) Patricia Bauer [CDS] 18-Dec-1998