ACDS V10.0 - Detailed Description of J/A+AS/139/277

ACDS V10.0 - Sun Jan 19 18:55:25 CET 2025

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

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)
    ================================================================================
    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