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J/ApJ/573/359       Rotational velocities of B stars from BSC      (Abt+, 2002)
Rotational velocities of B stars.
     Abt H.A., Levato H., Grosso M.
    <Astrophys. J. 573, 359 (2002)>
    =2002ApJ...573..359A
ADC_Keywords: Stars, early-type ; Stars, B-type ; Rotational velocities

Keywords: binaries: spectroscopic - diffusion - stars: early-type -
          stars: peculiar - stars: rotation

Description:
    The projected rotational velocities of 1092 northern B stars listed in
    the Bright Star Catalogue (BSC, cat. V/50) have been observed with
    the Kitt Peak 0.9m Coude feed telescope and 2.1 m coude spectrograph,
    equipped with a 632 grooves/mm grating giving a resolution of 7.1km/s.
    The rotational velocities were calibrated against the Slettebak et al.
    (1975ApJS...29..137S) system. The comparison with the BSC velocities
    shows that the published values of B dwarfs in the BSC average 27%
    higher than those standards.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        69     1165   Rotational velocities and equivalent widths of
                               B stars


See also:
   V/50 : Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)
   V/64 : Eighth Orbital Elements of Spectroscopic Binaries (Batten+ 1989)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1-  4  I4    ---     HR        The HR (Cat. V/50) or BSC number
   6- 11  I6    ---     HD        ? The HD (Cat. III/135) number
  13- 30  A18   ---     SpType    MK Spectral type (1)
  32- 34  I3    km/s    vsini     ? Derived projected rotational velocity (2)
  38- 41  I4    0.1pm   4471EW    ? He I (4471) equivalent width in milliÅ
      42  A1    ---     u_4471EW  [:] Indicates an uncertain 4471EW value
  45- 47  I3    0.1pm   4481EW    ? Mg II (4481) equivalent width in milliÅ
      48  A1    ---     u_4481EW  [:] Indicates an uncertain 4481EW value
  50- 63  A14   ---     Com       Comments (3)

Note (1): From Hofleit & Jaschek (1982, Cat. V/50).

Note (2): Averaged between the values obtained from 4471 and 4481Å.

Note (3): The comments give specific star identifications in doubles and
          the following comment codes:
 rot stnd = Slettebak et al. (1975ApJS...29..137S) standards;
     SB10 = single lined spectroscopic binary orbit in
            Batten, Fletcher & MacCarthy (1989, Cat. V/64);
     SB20 = double lined spectroscopic binary orbit in
            Batten, Fletcher & MacCarthy (1989, Cat. V/64);
        n = broad line character;
        s = sharp line character.


History:
    From electronic version of the journal
  * 09-Dec-2002: 6 HD numbers corrected for
    HR 1415, 2033, 2625, 7437, 7528, 8567
(End)                    Greg Schwarz [AAS], Patricia Bauer [CDS]    01-Oct-2002