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J/A+A/331/949       Wolf-Rayet and O-star runaways kinematics    (Moffat+ 1998)
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Wolf-Rayet stars and O-star runaways with HIPPARCOS. I. Kinematics.
(Based on data from the ESA Hipparcos astrometry satellite)
       Moffat A.F.J., Marchenko S.V., Seggewiss W., van der Hucht K.A.,
       Schrijver H., Stenholm B., Lundstrom I., Setia  Gunawan D.Y.A.,
       Sutantyo W., van den Heuvel E.P.J., De Cuyper J.-P., Gomez A.E.
      <Astron. Astrophys. 331, 949 (1998)>
      =1998A&A...331..949M      (SIMBAD/NED BibCode)
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ADC_Keywords: Stars, Wolf-Rayet ; Stars, O ; Proper motions ; Radial velocities
Keywords: astrometry - stars: kinematics - stars: early-type -
          stars: Wolf-Rayet - Galaxy: kinematics and dynamics

Abstract:
    Reliable systemic radial velocities are almost impossible to secure
    for Wolf-Rayet stars, difficult for O stars. Therefore, to study the
    motions - both systematic in the Galaxy and peculiar - of these two
    related types of hot, luminous star, we have examined the Hipparcos
    proper motions of some 70 stars of each type. We find that (a) both
    groups follow Galactic rotation in the same way, (b) both have a
    similar fraction of ``runaways'', (c) mean kinetic ages based on
    displacement and motion away from the Galactic plane tend to slightly
    favour the cluster ejection over the the binary supernova hypothesis
    for their formation, and (d) those with significant peculiar
    supersonic motion relative to the ambient ISM, tend to form bow shocks
    in the direction of the motion.

File Summary:
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  FileName        Lrecl  Records   Explanations
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ReadMe             80        .   This file
table1.dat        183      141   Summary of pertinent data for peculiar motions
                                  of the 74 O stars and 67 WR stars, in order of
                                  HIP number (RA for most stars)
table1.tex        133      430   LaTeX version of table1
fig/*               .        5   Corrected figures 1 to 5
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See also:
    I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)

Byte-by-byte Description of file: table1.dat
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  Bytes Format Units    Label        Explanations
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   1- 11  A11  ---      HD/DM        HD/DM catalogue number
  13- 25  A13  ---      Other        Other names
  26- 31  I6   ---      HIP          HIPPARCOS catalogue number (Cat. <I/239>)
  33- 47  A15  ---      Sp           Spectral class
  49- 53  F5.2 mag      Vmag         Visual magnitude (1)
  55- 62  F8.4 deg      GLON         Galactic longitude (Epoch 1991.25)
  64- 71  F8.4 deg      GLAT         Galactic latitude (Epoch 1991.25)
  73- 77  F5.2 kpc      r            Sun-star distance
  79- 83  I5   pc       z            Star-Galactic plane distance
  85- 90  F6.1 mas/yr   pmGLON       Observed proper motion (component along the
                                      Galactic longitude)
  92- 94  F3.1 mas/yr e_pmGLON       Error of pmGLON
  96-100  F5.1 mas/yr   pmGLAT       Observed proper motion (component along the
                                      Galactic latitude)
 102-104  F3.1 mas/yr e_pmGLAT       Error of pmGLAT
 106-110  F5.1 mas/yr   pmGLONp      Peculiar proper motion (component along the
                                      Galactic longitude)
 112-116  F5.1 --- pmGLONp/e_pmGLONp Ratio of the peculiar longitudinal
                                      proper motion to the proper motion error
 118-122  F5.1 mas/yr   pmGLATp      Peculiar proper motion (component along
                                      the Galactic latitude)
 124-128  F5.1 --- pmGLATp/e_pmGLATp Ratio of the peculiar latitudinal
                                      proper motion to the proper motion error
 130-134  F5.1 km/s     TVp          Peculiar tangential velocity
 136-140  F5.1 km/s   e_TVp          Error of the peculiar tangentional velocity
 142-147  F6.1 km/s     HRV          ? Heliocentric radial velocity
 149-153  F5.1 km/s     HRVp         ? Peculiar component of the radial velocity
 155-184  A30  ----     Remarks      Comments
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Note (1): Broadband Hp V for OB stars, narrowband continuum v for W-R stars.
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Acknowledgements: Sergey Marchenko <sergey@ASTRO.UMontreal.CA>

History: On 23-Apr-1999, table1 have been modified and corrected figures 1 to 5
          added, see the Erratum 1999A&A...344..321M.
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(End)                                         Patricia Bauer [CDS]   23-Apr-1999