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J/A+AS/132/155      Main-sequence and subgiants ROSAT data (Huensch+ 1998)
The ROSAT all-sky survey catalogue of optically bright main-sequence stars
and subgiant stars
       Huensch M., Schmitt H.H.M.M., Voges W.
      <Astron. Astrophys. Suppl. Ser. 132, 155 (1998)>
      =1998A&AS..132..155H      (SIMBAD/NED BibCode)
ADC_Keywords: Stars, giant ; Stars, dwarfs ; X-ray sources

Mission_Name: ROSAT

Keywords: stars: activity - stars: coronae - stars: late-type - X-rays: stars -
          catalogs

Description:
    We present X-ray data for all main-sequence and subgiant stars of
    spectral types A, F, G, and K and luminosity classes IV and V listed
    in the Bright Star Catalogue (Cat. V/50) that have been detected as
    X-ray sources in the ROSAT all-sky survey; In addition to count rates,
    source detection parameters, hardness ratios, and X-ray fluxes we also
    list X-ray luminosities derived from Hipparcos parallaxes.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat       123      980   RASS detections of BSC late-type main-sequence stars
table2.ps         72     3087   PostScript version of table2
table2.tex       128     1158   LaTeX version of table2


See also:
           IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1996)
           IX/11 : ROSAT PSPC Source Catalog (Voges+ 1994)
  J/A+AS/127/251 : Giants and supergiants ROSAT data (Huensch+ 1998)
  J/A+AS/135/319 : Late-type main-sequence stars ROSAT data (Huensch+ 1999)


Byte-by-byte Description of file: table2.dat

   Bytes Format Units     Label   Explanations

       1  A1    ---     n_HRName  [*] Note on star (1)
   2-  5  I4    ---       HRName  Bright Star Catalogue (Cat. V/50) number
   7- 12  I6    ---       HD      Henry Draper Catalogue (Cat. III/135) number
  14- 30  A17   ---       Name    Star's name
  31- 35  F5.2  mag       Vmag    V magnitude
  37- 41  F5.2  mag       B-V     B-V colour index
  43- 59  A17   ---       SpType  MK spectral classification
  61- 65  F5.1  pc        Dist    ? Distance
  67- 71  A5    ---       Binary  Binarity flag (2)
  73- 76  I4    s        ExpTime  Effective exposure time
  78- 83  F6.3  ct/s      Count   Mean PSPC count rate
  85- 89  F5.3  ct/s     e_Count  Error of PSPC count rate
  91- 93  I3    ---       LEx     Likelihood of existence
  95- 96  I2    arcsec    Delta   Offset between optical and X-ray position
  98-102  F5.2  ---       HR      Hardness Ratio = (H-S)/(H+S)
 104-107  F4.2  ---       e_HR    Error of Hardness Ratio
 109-115  F7.1  10-17W/m2 FX      Apparent X-ray flux (0.1-2.4 keV)
 117-123  F7.1  10+20W    LX      ? X-ray luminosity

Note (1): *: objects that have been observed later on in the course of the
              so-called "survey repair". Their X-ray data have been aquired at
              different times than the mayor part of the survey.
Note (2): S: Single
         VB: Visual binary
         SB: Spectroscopic binary
          B: Other binary


Acknowledgements: Matthias Huensch 

(End)                                         Patricia Bauer [CDS]   22-Apr-1998