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 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 1966ApJ...146..880S) and Sadakane & Ueta (=1989PASJ...41..279S 1989PASJ...41..279S).
Table 1. Observation Journal of Sirius:
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Spectral Range Exposure Time Geocentric Radial Velocity
(nm) Obs. Date (s) (km s-1)
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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)
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Objects:
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RA (2000) DE Designation(s)
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06 45 08.9 -16 42 58 Sirius = Alpha CMa = HR 2491 = HD 48915
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 34 546 Equivalent Widths of Sirius
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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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- 34 I1 --- q_EW *Quality of line profile
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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
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History:
From electronic ApJS edition.
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(End) Gail L. Schneider [NASA/ADC] 07-Sep-2000