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J/A+AS/128/331      X-ray Sources in Molecular Clouds (Danner 1998)
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Searching for Old Neutron Stars with ROSAT:
I. Soft X-ray Sources in Molecular Clouds at High Galactic Latitude.
       Danner R.
      <Astron. Astrophys. Suppl. Ser. 128, 331 (1998)>
      =1998A&AS..128..331D      (SIMBAD/NED BibCode)
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ADC_Keywords: X-ray sources
Keywords: surveys - stars: neutron; white dwarfs - X-rays: stars -
          radio continuum: stars
Mission_Name: ROSAT

Description:
    Figure 9: Finding charts for the objects where spectra were taken,
    based on the APM data base. The cross is centered at the X-ray
    position. 30 arcsec radius error circles are shown and arrows mark the
    objects with the available spectra. North is up and East to the left
    in all charts.
    Figure 10: Deep CCD images of the X-ray source fields with faint
    optical counterparts. Circles with 30 arcsec radius are centered on
    the X-ray position. Capital letters identify the brightest object next
    to them (see Table 3 for remarks on identification). The filter used
    and the exposure time are shown above each image in brackets.

See also:
   J/A+A/316/147 : Catalogue of ROSAT White Dwarfs (Fleming+ 1996)

File Summary:
--------------------------------------------------------------------------------
 FileName    Lrecl    Records    Explanations
--------------------------------------------------------------------------------
ReadMe          80          .    This file
table2.dat     102         89    Summary of the identification program of all
                                  89 sources found within the lowest contours
                                  of the MBM cloud maps
table2.tex     153        137    LaTeX version of table2
fig9a.ps        80        845    Finding charts
fig9b.ps        80        997    Finding charts
fig9c.ps        80        876    Finding charts
fig9d.ps        80        848    Finding charts
fig9e.ps        80        944    Finding charts
fig9f.ps        80        906    Finding charts
fig10a.ps       72      12627    Deep CCD images
fig10b.ps       72      12627    Deep CCD images
fig10c.ps       72      12627    Deep CCD images
fig10d.ps       72      12627    Deep CCD images
fig10e.ps       72      12627    Deep CCD images
fig10f.ps       72      12627    Deep CCD images
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Byte-by-byte Description of file: table2.dat
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   Bytes Format Units   Label        Explanations
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   1-  2  I2    ---     ID           Internal reference number
   4-  5  I2    h       RAh          X-ray right ascension (2000.0)
   7-  8  I2    min     RAm          X-ray right ascension (2000.0)
  10- 13  F4.1  s       RAs          X-ray right ascension (2000.0)
      15  A1    ---     DE-          Declination sign
  16- 17  I2    deg     DEd          X-ray declination (2000.0)
  19- 20  I2    arcmin  DEm          X-ray declination (2000.0)
  22- 23  I2    arcsec  DEs          X-ray declination (2000.0)
  25- 29  F5.3  ct/s    Rate         Source count rate
  31- 35  F5.3  ct/s  e_Rate         Error in count rate
  37- 41  F5.2  ---     HR1          ? Hardness ratio HR1 (1)
  43- 47  F5.2  ---     HR2          ? Hardness ratio HR2 (1)
  49- 63  A15   ---     Name         Catalog name of object
      64  A1    ---   n_Name         [*+ab] Note on Name (2)
  66- 73  A8    ---     SpType       Spectral Type
      76  A1    ---     BandP        [OVJ] Band of the magnitude mvis
  77- 81  F5.2  mag     mvis         ? Visual magnitude of counterpart
      83  A1    ---   l_O-E          Limit flag on O-E
  84- 88  F5.2  mag     O-E          ? O-E color index from APM scans
  90- 93  F4.1  arcsec  Dist         ? Separation between X-ray source and
                                        proposed counterpart
  95- 96  A2    ---     Band         Bands in which the source has been observed
                                      at the VLA
      98  A1    ---   l_log(FX/Fopt) Limit flag on log(FX/Fopt)
  99-102  F4.1  ---     log(FX/Fopt) ? Logarithm of X-ray to optical flux ratio
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Note (1): When blank, source was not detected when data were split into
           two spectral channels
Note (2): *: new Identification
          +: new classification
          a: not detected in snapshot
          b: in visual binary with M4V
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Acknowledgements: Rudolf Danner <rmd@astro.caltech.edu>

References:
   Danner, Paper II. 1998A&AS..128..349D
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(End)                                         Patricia Bauer [CDS]   20-Aug-1997