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Detailed Description of J/A+AS/139/277 :
LMC X-ray sources ROSAT PSPC catalogue (Haberl+, 1999)

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Note : this is the description file of the original catalog. This HTML page corresponds well to the original description, but some minor changes in the format may have been introduced in the FITS output files in order to allow for arithmetic operations on quantities such as coordinates and times. h:m:s and d:m:s units are normally converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the units; the value given in the HTML files supersedes the value indicated in the ReadMe file for this catalogue.
J/A+AS/139/277      LMC X-ray sources ROSAT PSPC catalogue   (Haberl+, 1999)
================================================================================
A ROSAT PSPC catalogue of X-ray sources in the LMC region
       Haberl F., Pietsch W.
      <Astron. Astrophys. Suppl. Ser. 139, 277 (1999)>
      =1999A&AS..139..277H      (SIMBAD/NED BibCode)
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ADC_Keywords: X-ray sources ; Magellanic Clouds

Mission_Name: ROSAT

Keywords: catalogues - galaxies: magellanic clouds - galaxies: stellar content -
          X-rays: galaxies - X-rays: stars

Abstract:
    We analyzed more than 200 ROSAT PSPC observations in a 10 by 10 degree
    field centered on the Large  Magellanic  Cloud  (LMC)   and  performed
    between 1990 and 1994 to derive a catalogue of X-ray sources. The list
    contains    758   sources   with   their   X-ray   properties.    From
    cross-correlations of the PSPC catalogue with the SIMBAD data base and
    literature searches we  give  likely  identifications  for  144  X-ray
    sources based on positional coincidence, but taking into account X-ray
    properties like  hardness ratios and source  extent.  46 known sources
    are associated  with supernova remnants (SNRs)   and candidates in the
    LMC, most of them already detected by previous X-ray missions.

File Summary:

FileName Lrecl Records Explanations
× 80 . This file × ReadMe 80 . This file × table1.dat 176 758 The catalogue of 758 ROSAT PSPC sources from a 10°x10° field centered on the LMC × table4.dat 112 77 PSPC sources detected by the Einstein IPC × table5.dat 131 55 PSPC sources detected in the ROSAT all-sky survey × table6.dat 142 46 SNRs and candidates in the LMC × table7.dat 142 26 X-ray binaries and supersoft sources in the LMC. × table8.dat 142 15 Identifications with background AGN and galaxies × table9.dat 140 57 Identifications with foreground stars × table10.dat 148 92 Classified PSPC sources × refs.dat 80 34 References
See also: IX/28 : ROSAT HRI Pointed Observations (1RXH) (ROSAT Team, 1999) J/A+AS/143/391 : ROSAT HRI catalogue of LMC X-ray sources (Sasaki+, 2000) J/A+AS/142/41 : SMC X-ray sources ROSAT PSPC catalogue (Haberl+, 2000) J/A+AS/147/75 : ROSAT HRI catalogue of SMC X-ray sources (Sasaki+, 2000) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- [HP99] Source number 6- 12 F7.1 --- LI ? likelihood of existence 14- 18 I5 s Vign Vignetting corrected net exposure time 20- 21 I2 h RAh Right ascension (J2000.0) 23- 24 I2 min RAm Right ascension (J2000.0) 26- 29 F4.1 s RAs Right ascension (J2000.0) 31 A1 --- DE- Declination sign (J2000.0) 32- 33 I2 deg DEd Declination (J2000.0) 35- 36 I2 arcmin DEm Declination (J2000.0) 38- 39 I2 arcsec DEs Declination (J2000.0) 41- 45 F5.1 arcsec r90 Statistical 90% confidence error on the X-ray position 47- 54 E8.3 ct/s CR PSPC (Cat. IX/11) 0.1-2.4 keV count rate 56- 62 E7.2 ct/s e_CR Count rate error 64- 68 F5.2 --- HR1 ? Hardness ratio 1 (G2) 70- 73 F4.2 --- e_HR1 ? Error on HR1 75- 79 F5.2 --- HR2 ? Hardness ratio 2 (G2) 81- 85 F5.2 --- e_HR2 ? Error on HR2 87- 91 F5.1 arcsec Ext Source extent 93- 98 F6.1 --- LIExt Likelihood for the extent 100-108 A9 --- ROSAT ROSAT observation identifier 110-111 I2 arcmin Off-axis ? Off-axis angle 113-116 F4.1 --- Dist ? Distance to detector window support structure or detector rim (in units of FWHM of the instrument resolution at the position of the source in the detector) 118-176 A59 --- Rem Remarks
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 4 I4 --- [HP99] Sequential number 6- 7 I2 --- CAL ? Long et al. (1981ApJ...248..925L) number 9- 18 A10 --- WHHW Wang et al. (1991ApJ...374..475W) number 20- 23 F4.1 arcsec Dist Distance between Einstein IPC and ROSAT PSPC position 25- 28 F4.1 arcsec r90 Statistical 90% confidence error on the X-ray position 30- 37 E8.2 ct/s CR PSPC (Cat. IX/11) 0.1-2.4 keV count rate 39- 45 E7.1 ct/s e_CR rms uncertainty on CR 47- 51 F5.3 ct/s CRipc ? IPC count rate 53-112 A60 --- Rem Remarks (G1)
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 4 I4 --- [HP99] Sequential number 6- 26 A21 --- 1RXS 1RXS (Cat. IX/10) designation (1RXS JNNNNNN.N-NNNNNN) 28- 31 F4.1 arcsec Dist Distance between BSC (Cat. IX/10) and ROSAT PSPC (Cat. IX/11) position 33- 36 F4.1 arcsec r90 Statistical 90% confidence error on the X-ray position 38- 39 I2 arcsec rBSC BSC (Cat. IX/10) radius 41- 48 E8.2 ct/s CR PSPC (Cat. IX/11) 0.1-2.4 keV count rate 50- 56 E7.1 ct/s e_CR rms uncertainty on CR 58- 65 E8.2 ct/s CRbsc BSC (Cat. IX/10) count rate 67- 73 E7.1 ct/s e_CRbsc rms uncertainty on CRbsc 75-131 A57 --- Rem Remarks (G1)
Byte-by-byte Description of file: table[678].dat
Bytes Format Units Label Explanations
1- 4 I4 --- [HP99] Sequential number 6- 7 I2 h RAh Right ascension (J2000.0) 9- 10 I2 min RAm Right ascension (J2000.0) 12- 15 F4.1 s RAs Right ascension (J2000.0) 17 A1 --- DE- Declination sign (J2000.0) 18- 19 I2 deg DEd Declination (J2000.0) 21- 22 I2 arcmin DEm Declination (J2000.0) 24- 25 I2 arcsec DEs Declination (J2000.0) 27- 30 F4.1 arcsec r90 Statistical 90% confidence error on the X-ray position 32- 39 E8.2 ct/s CR Count rate 41- 47 E7.1 ct/s e_CR rms uncertainty on CR 49- 53 F5.2 --- HR1 ? Hardness ratio 1 (3) 55- 58 F4.2 --- e_HR1 ? rms uncertainty on HR1 60- 64 F5.2 --- HR2 ? Hardness ratio 2 (3) 66- 69 F4.2 --- e_HR2 ? rms uncertainty on HR2 71- 75 F5.1 arcsec Extent ? Source extent (2) 77- 82 F6.1 --- LIExt ? Likelihood for the extent (2) 84-142 A59 --- Rem Remarks (G1)
Note (2): Only in table6.dat Note (3): HR1=(H-S)/(S+H) and HR2=(H2=H1)/(H1+H2) where S, H, H1 and H2 denote count rates in the 0.1-0.4keV, 0.5-2.0keV, 0.5-0.9keV and 0.9-2.0keV bands, respectively. Not calculated in cases where not all required count rates are available
Byte-by-byte Description of file: table9.dat
Bytes Format Units Label Explanations
1- 4 I4 --- [HP99] Sequential number 6- 7 I2 h RAh Right ascension (J2000.0) 9- 10 I2 min RAm Right ascension (J2000.0) 12- 15 F4.1 s RAs Right ascension (J2000.0) 17 A1 --- DE- Declination sign (J2000.0) 18- 19 I2 deg DEd Declination (J2000.0) 21- 22 I2 arcmin DEm Declination (J2000.0) 24- 25 I2 arcsec DEs Declination (J2000.0) 27- 30 F4.1 arcsec r90 Statistical 90% confidence error on the X-ray position 32- 39 E8.2 ct/s CR Count rate 41- 47 E7.1 ct/s e_CR rms uncertainty on CR 49- 53 F5.2 --- HR1 ? Hardness ratio 1 (G2) 55- 58 F4.2 --- e_HR1 ? rms uncertainty on HR1 60- 64 F5.2 --- HR2 ? Hardness ratio 2 (G2) 66- 69 F4.2 --- e_HR2 ? rms uncertainty on HR2 71- 74 F4.1 arcsec Dist ? Distance 76- 79 F4.1 --- log(Fx/Fopt) ? X-ray to optical fluxes ratio 81-140 A60 --- Rem Remarks (G1)
Byte-by-byte Description of file: table10.dat
Bytes Format Units Label Explanations
1- 4 I4 --- [HP99] Sequential number 6- 10 F5.1 --- MLexi Likelihood of existence 12- 13 I2 h RAh Right ascension (J2000.0) 15- 16 I2 min RAm Right ascension (J2000.0) 18- 21 F4.1 s RAs Right ascension (J2000.0) 23 A1 --- DE- Declination sign (J2000.0) 24- 25 I2 deg DEd Declination (J2000.0) 27- 28 I2 arcmin DEm Declination (J2000.0) 30- 31 I2 arcsec DEs Declination (J2000.0) 33- 36 F4.1 arcsec r90 Statistical 90% confidence error on the X-ray position 38- 45 E8.2 ct/s CR Count rate 47- 53 E7.1 ct/s e_CR rms uncertainty on CR 55- 59 F5.2 --- HR1 ? Hardness ratio 1 (G2) 61- 64 F4.2 --- e_HR1 ? rms uncertainty on HR1 66- 70 F5.2 --- HR2 ? Hardness ratio 2 (G2) 72- 75 F4.2 --- e_HR2 ? rms uncertainty on HR2 77- 81 F5.1 arcsec Extent ? Source extent 83- 87 F5.1 --- LIExt ? Likelihood for the extent 89-148 A60 --- Rem Remarks (G1)
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Ref Reference code 8- 26 A19 --- BibCode BibCode 28- 46 A19 --- Aut Author's name 48- 70 A23 --- Com Comments
Global Notes: Note (G1): Abbreviations for references given in parenthesis are in refs.dat file Unsecure identifications from positional uncertainty begin with? in the remark. Candidates from literature are marked with? after source class name. Abbreviations: SEP: in pointing near south ecliptic pole, GSC: HST guide star catalogue (Lasker et al., 1990, Cat. I/220), NED: NASA/IPAC extragalactic database, operated by the Jet Propulsion Laboratory , California Institute of Technology, under contract with the National Aeronautics and Space Administration fg: foreground, var: X-ray variable, const: X-ray constant. Note (G2): HR1=(H-S)/(S+H) and HR2=(H2=H1)/(H1+H2) where S, H, H1 and H2 denote count rates in the 0.1-0.4keV, 0.5-2.0keV, 0.5-0.9keV and 0.9-2.0keV bands, respectively. Not calculated in cases where not all required count rates are available.
Acknowledgements: Frank Haberl, MPE Garching fwh@xray.mpe.mpg.de ================================================================================ (End) Patricia Bauer [CDS] 15-Feb-2000