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J/ApJS/126/461   Equivalent Widths in the Spectrum of Sirius       (Zhao+, 2000)
Equivalent Widths in the Spectrum of Sirius
     Zhao G., Qiu H.M., Chen Y.Q., Li Z.W.
    <Astrophys. J. Suppl. 126, 461 (2000)>
    =2000ApJS..126..461Z
ADC_Keywords: Atlases ; Line Profiles ; Stars, early-type

Keywords: atlases - line: profiles - stars: early-type - stars: individual
          (α Canis Majoris)

Abstract:
    The equivalent widths of total 546 lines (26 elements are included) in
    the spectrum of the bright Am star Sirius from 380 to 930 nm are
    tabulated. The high-resolution, high signal-to-noise ratio spectrum
    was obtained with the Coude Echelle Spectrograph attached to the 2.16
    m telescope at Beijing Astronomical Observatory (Xinglong, China).
    Here we also give the results of the equivalent widths comparison
    between our measurements and those of Strom et al.
    (=1966ApJ...146..880S) and Sadakane & Ueta (=1989PASJ...41..279S).


  Table 1. Observation Journal of Sirius:
  ----------------------------------------------------------------------------
  Spectral Range                  Exposure Time  Geocentric Radial Velocity
      (nm)         Obs. Date            (s)                (km s-1)
  ----------------------------------------------------------------------------
   386.5-572.1   1997 Feb 18/19         180             12.75 (0.45)
   383.3-661.9   1997 Feb 18/19      40+40+30           12.37 (0.96)
   378.9-551.6   1997 Feb 18/19        40+40            12.31 (0.82)
   380.7-649.3   1997 Feb 18/19        40+40            12.42 (0.93)
   623.8-922.7   1999 Apr 01/02       300+300           15.49 (0.52)
   624.8-930.4   1999 Apr 01/02       300+300           15.58 (0.69)
  ----------------------------------------------------------------------------
Objects:
    ----------------------------------------------------------------
       RA   (2000)   DE      Designation(s)
    ----------------------------------------------------------------
    06 45 08.9   -16 42 58   Sirius = Alpha CMa = HR 2491 = HD 48915
    ----------------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        34      546   Equivalent Widths of Sirius


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

   Bytes Format Units      Label       Explanations

   1-  5  A5    ---        Ion         Element and ionization stage
   7- 10  I4    ---        Num         Multiplet number
  12- 20  F9.4  0.1nm      Lambda      Wavelength
  22- 26  F5.2  eV         LEP         Lower excitation potential
  28- 32  F5.1  0.1pm      EW          Measured equivalent width from Sirius
                                         spectrum
      34  I1    ---        q_EW       *Quality of line profile

Note on q_EW:
  The flags only give readers a rough estimation of line quality.  Different
  people may adopt a slightly different opinion for the choice of flag number.
  The flag numbers 1-3 are recommended to be used in accurate abundance
  determinations.
     1=perfect
     2=good
     3=slightly blended
     4=mildly blended
     5=blended


History:
    From electronic ApJS edition.

References:
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     (NBS:revised ed; Boulder)
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     =1977ApJ...214..130P
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(End)                Gail L. Schneider [NASA/ADC]                    07-Sep-2000