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J/ApJ/601/979       vsini of Orion low-mass stars            (Wolff+, 2004)
The angular momentum evolution of 0.1-10M☉ stars from the birth line
to the main sequence.
    Wolff S.C., Strom S.E., Hillenbrand L.A.
   <Astrophys. J., 601, 979-999 (2004)>
   =2004ApJ...601..979W
ADC_Keywords: Clusters, open ; Stars, pre-main sequence ; Photometry, UBVRI ;
              Photometry, infrared ; Rotational velocities
Keywords: open clusters and associations: individual (Orion) -
          stars: pre-main-sequence - stars: rotation

Abstract:
    Projected rotational velocities (vsini) have been measured for a
    sample of 145 stars with masses between 0.4 and greater than
    10M☉ (median mass 2.1M☉) located in the Orion star-forming
    complex. These measurements have been supplemented with data from the
    literature for Orion stars with masses as low as 0.1M☉.

Description:
    High-resolution (R∼20000) spectroscopic data were obtained in 1992
    November and 1993 January with the Hydra multiobject spectrograph
    mounted on the KPNO 4m telescope.
    Near-infrared (JHK) observations were obtained for several hundred
    stars in the Orion Ic/Id association that met the proper-motion
    criteria defined above. The observations were made in 1991 November
    and December with the OTTO photometer mounted on the KPNO 50 inch
    telescope.
Objects:
    ----------------------------------------------------------
       RA   (2000)   DE    Designation(s)
    ----------------------------------------------------------
    05 35 17.3 -05 23 28   Orion = M 42 = NGC 1976
    ----------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       154      145   Observed Parameters
table2.dat        65      145   Derived Parameters
refs.dat         111       40   References


See also:
   II/171 : Parenago Catalog of Stars in Orion Nebula (Parenago 1954)


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

   Bytes Format Units   Label    Explanations

   1-  4  I4    ---    Parenago  Parenago (1954, II/171) number
   6- 10  F5.2  mag     Vmag     The V band magnitude
  12- 16  F5.2  mag     B-V      The (B-V) colour index
  18- 22  F5.2  mag     U-B      ? The (U-B) colour index
  24- 26  A3    ---     r_Vmag   The UBV photometry references
  28- 32  F5.2  mag     Icmag    ? The Ic band magnitude
  34- 38  F5.2  mag     V-Ic     ? The (V-Ic) colour index
  40- 44  A5    ---     r_Icmag  Reference on Icmag
  46- 50  F5.2  mag     Jmag     ? The J band magnitude
  52- 56  F5.2  mag     J-H      ? The (J-H) band colour index
  58- 62  F5.2  mag     H-K      ? The (H-K) band colour index
      64  A1    ---     n_Jmag   [a-d] The JHK photometry references (1)
  66- 74  A9    ---     SpType   MK spectral type
  76- 86  A11   ---    r_SpType  Reference on SpType
      88  A1    ---    l_vsini1  Limit flag on vsini
  89- 91  I3    km/s    vsini1   Projected rotational velocity
      92  A1    ---    u_vsini1  Uncertainty flag on vsini
      93  A1    ---     ---      [-] when interval
  94- 95  I2    ---     vsini1u  ? Upper value of vsini interval
  96-102  A7    ---   n_vsini1u  Note on vsini (2)
     103  A1    ---     ---      [,]
     104  A1    ---    l_vsini2  Limit flag on vsini2
 105-107  I3    km/s    vsini2   ? Second value of projected rotational velocity
     108  A1    ---     ---      [/]
 109-111  I3    km/s    vsini3   ? Third value of projected rotational velocity
 112-118  A7    ---    n_vsini2  Note on vsini2 (2)
     119  A1    ---     ---      [,]
 120-122  I3    ---     vsini4   ? Fourth value of projected rotational velocity
 124-134  A11   ---     Refs     References on vsini, detailed in refs.dat
 136-139  I4    ---     Brun     ? The Brun (1935POLyo...1...12B) number,
                                    NGC 1977 NNNN in Simbad
 141-146  I6    ---     HD       ? The HD (Cat. III/135) number
 148-151  I4    ---     HR       ? The HR (Cat. V/50) number
 153-154  A2    ---     WH       Warren & Hesser (1997, Cat. II/36) projected
                                  group

Note (1): JHK photometry references are as follows:
      a = this paper (1991) OTTO observations
      b = this paper (1992) SQIID observations
      c = this paper (1993) NICMASS observations
      d = literature
Note (2): The notation (SB:nn) indicates a candidate spectroscopic binary
    with nn corresponding to the amplitude of the radial velocity
    variation among our different observations of the star. (SB1)
    indicates an SB1 candidate identified in previous literature; 
    see r_vsini column.


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

   Bytes Format Units   Label    Explanations

   1-  4  I4    ---    Parenago  Parenago (1954, II/171) number
       6  A1    ---     l_vsini  Limit flag on vsini
   7- 10  I4    km/s    vsini    Adopted projected rotational velocity
      11  A1    ---     u_vsini  Uncertainty flag on vsini
  13- 14  I2    ---     r_vsini  ? Reference on vsini (in this paper if blank)
  16- 19  F4.2  mag     A(V)     Extinction in the V band
  21- 25  F5.3  [K]     logT     Log of the effective temperature
  27- 31  F5.2 [solLum] logL     Log of the luminosity in solar units
  33- 37  F5.2  solRad  Rad      Radius in solar units
  39- 43  F5.2  [g.cm2] logI     Log of the moment of inertia
  45- 47  A3    ---     Track    [C/R ] HR diagram track (2)
  49- 52  F4.2  [yr]    logA     ? Log of the Age
  54- 58  F5.2  solMass Mass     Mass in solar units
  60- 64  F5.2  mag     D(H-K)   ? Difference between reddening-corrected H-K
                                   color and underlying photospheric color

Note (2): HR diagram track:
      C = convective track
      R = radiative track


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- 51  A28   ---     Aut       Author's name
  52-111  A60   ---     Com       Comments


History:
    From electronic version of the journal
(End)                  Greg Schwarz [AAS], Patricia Vannier [CDS]    06-Apr-2004