ACDS V10.0 - Detailed Description of J/A+AS/147/75

ACDS V10.0 - Mon Jan 20 08:23:14 CET 2025

| # Detailed Description of J/A+AS/147/75 : ROSAT HRI catalogue of SMC X-ray sources (Sasaki+, 2000) |

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/147/75       ROSAT HRI catalogue of SMC X-ray sources     (Sasaki+, 2000)
    ================================================================================
    ROSAT HRI catalogue of X-ray sources in the SMC region.
        Sasaki M., Haberl F., Pietsch W.
       <Astron. Astrophys. Suppl. Ser. 147, 75 (2000)>
       =2000A&AS..147...75S
    ================================================================================
    ADC_Keywords: X-ray sources ; Magellanic Clouds

    Mission_Name: ROSAT

    Keywords: catalogues - galaxies: Magellanic Clouds - galaxies: stellar content -
              X-rays: galaxies - X-rays: stars

    Description:
        The ROSAT HRI SMC source catalogue is based on all 71 pointed
        observations of the Small Magellanic Cloud by the ROSAT HRI between
        1990 and 1998. The data was selected in a 5°x5° field covering
        the SMC. The catalogue which contains 121 X-ray sources, was
        cross-correlated with data bases and catalogues like SIMBAD, TYCHO, or
        USNO as well as other publications in order to classify the X-ray
        sources and find new candidates for various source classes.

    File Summary:

           FileName      Lrecl  Records   Explanations

    ×                   80        .   This file
    × ReadMe            80        .   This file
    × table3.dat       156      121   ROSAT HRI SMC catalogue

    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/139/277 : LMC X-ray sources ROSAT PSPC catalogue (Haberl+, 1999)
        J/A+AS/142/41  : SMC X-ray sources ROSAT PSPC catalogue (Haberl+, 2000)

    Byte-by-byte Description of file:  table3.dat

       Bytes Format Units     Label      Explanations

       1-  3  I3    ---       [SHP2000]  HRI source number
                                          ([SHP2000] SMC NNN in Simbad)
       5-  6  I2    h         RAh        Right Ascension J2000 (hours)
       8-  9  I2    min       RAm        Right Ascension J2000 (minutes)
      11- 14  F4.1  s         RAs        Right Ascension J2000 (seconds)
          16  A1    ---       DE-        Declination J2000 (sign)
      17- 18  I2    deg       DEd        Declination J2000 (degrees)
      20- 21  I2    arcmin    DEm        Declination J2000 (minutes)
      23- 24  I2    arcsec    DEs        Declination J2000 (seconds)
      26- 29  F4.1  arcsec    e_Pos      Positional error
      31- 37  F7.1  ---       MLexi      Existence Likelihood
      39- 46  E8.2  ct/s      CRate      Count rate
      48- 55  E8.2  ct/s      e_CRate    Count rate error
      57- 60  F4.1  arcsec    Extent     Source extent
      62- 64  F3.1  arcsec    e_Extent   Extent error
      66- 71  F6.1  ---       MLext      Extent Likelihood
          73  A1    ---       l_PCRate   Limit flag on PCRate
      74- 81  E8.2  ct/s      PCRate     ? PSPC count rate, see Note (1)
      83- 85  I3    ---       PSPC       ? PSPC source number, see Note (2)
      87- 91  F5.2  ---       PHR1       ? Hardness ratio 1 of the PSPC source
      93- 96  F4.2  ---       e_PHR1     ? Error of hardness ratio 1
      98-102  F5.2  ---       PHR2       ? Hardness ratio 2 of the PSPC source
     104-107  F4.2  ---       e_PHR2     ? Error of hardness ratio 2
     109-148  A40   ---       Remarks    Source classification, see Note (3)

    Note (1): For sources which are listed in the ROSAT PSPC catalogue (Haberl et
               al., 2000, Cat. J/A+AS/142/41) PSPC count rates are taken from the
               catalogue. Otherwise PSPC count rate is the 2{sigma} upper limit from
               maximum likelihood algorithm ('<' in column l_PCRate).
    Note (2): PSPC source number from the ROSAT PSPC catalogue (Haberl et al., 2000,
               Cat. J/A+AS/142/41)
    Note (3): Candidates from literature are marked with '?' behind the source
               class.  New classifications are put in < >.

    Acknowledgements: Manami Sasaki manami@xray.mpe.mpg.de

    ================================================================================
    (End)    Manami Sasaki [MPI f. extr. Physik], Patricia Bauer   [CDS] 11-Dec-2000