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J/ApJS/176/216       MK spectral types of Visual Multiples           (Abt, 2008)
Visual multiples. IX. MK spectral types.
    Abt H.A.
   <Astrophys. J. Suppl. Ser., 176, 216-217 (2008)>
   =2008ApJS..176..216A
ADC_Keywords: Stars, double and multiple ; Spectral types

Keywords: binaries: visual - stars: fundamental parameters


Abstract:
    In this third of three parts of MK classifications of the components
    brighter than about B=8mag in Aitken's Catalogue (ADS, 1932) new
    classifications are given for 546 stars. Included in this section are
    15 Ap stars, 33 Am stars, 18 stars with composite spectra, three stars
    with shell spectra, and two SB2s.

Description:
    Two-thirds of the current spectra were obtained with the Meinel
    Cassegrain spectrograph on the Kitt Peak 0.9m telescope, with a
    resolution of 2.5Å. The remaining one-third were obtained with the
    Cassegrain spectrograph (also designed by Meinel) on the Kitt Peak
    2.1m telescope, with a resolution of 0.8Å.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       106      544   Identifications and MK Classifications
refs.dat          42       66   References


See also:
        III/106 : MK Classification of Visual Multiples (Abt, 1981)
        III/117 : MK Classifications of Close Visual Binaries (Corbally, 1984)
          I/260 : Visual Double Stars in Hipparcos (Dommanget+, 2000)
   J/ApJS/59/95 : Visual multiples. VIII. (Abt+, 1985)


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

   Bytes Format Units   Label     Explanations

   1-  8  A8    ---     ADS       The ADS identification (1)
  10- 17  A8    ---     HD        The HD identification (Cat. III/135)
  19- 28  A10   ---     IDS       The IDS coordinates (J2000, HHMMm+DDMM)
                                  (Jeffers et al., 1963IDS...C......0J)
      30  A1    ---     q_MKType  [*] The asterisk indicates the best types
                                      (derived from 0.8Å resolution spectra)
  31- 57  A27   ---     MKType    The MK type
  59-100  A42   ---     Remarks   Other classification or absolute magnitude (2)
 102-106  A5    ---    r_Remarks  Other classification reference

Note (1): ADS NNNNN AAA in Simbad

Note (2): the Hipparcos parallax is used to derive an absolute magnitude,
     if the parallax is substantially larger than its error, e.g.
     M(π)=-0.7


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

   Bytes Format Units   Label     Explanations

   1-  2  I2    ---     Ref       Reference number
   4- 22  A19   ---     BibCode   Bibcode
  24- 42  A19   ---     Aut       Author's name


History:
    From electronic version of the journal

References:
    Abt et al., 1976. Paper II.   1976AJ.....81..541A
    Abt & Levy, 1976. Paper III.  1976AJ.....81..659A
    Abt et al., 1980. Paper V.    1980ApJS...43..549A
    Abt, 1980.        Paper VI.   1980PASP...92..796A
    Abt, 1981.        Paper VII.  1981ApJS...45..437A, Cat. III/106
    Abt, 1985.        Paper VIII. 1985ApJS...59...95A, Cat. J/ApJS/59/95
(End)                 Greg Schwarz [AAS], Emmanuelle Perret [CDS]    30-Jun-2009