J/A+A/547/A62 A catalogue of Paschen-line profiles (Huang+, 2012)
A catalogue of Paschen-line profiles in standard stars.
Huang W., Wallerstein G., Stone M.
<Astron. Astrophys. 547, A62 (2012)>
=2012A&A...547A..62H 2012A&A...547A..62H
ADC_Keywords: Atlases ; Line Profiles; Stars, early-type ; Stars, late-type
Keywords: atlases ; line: profiles ; stars: early-type ; stars: late-type
Abstract:
We have assembled an atlas of line profiles of the Paschen Delta
(P-δ) line at 10049Å for the use of stellar modelling. For a
few stars we have substituted the Paschen Gamma (P-γ) line at
10938Å because the P-δ line blends with other features. Most of
the targets are standard stars of spectral types from B to M. A few
metal-poor stars have been included. For many of the stars we have
also observed the Hydrogen Alpha (H-α) line so as to compare the
profiles of lines originating from the meta-stable n=2 level with
lines originating from the n=3 level. The greatest difference in line
profile is found for high luminosity and cool stars where the
departures from LTE in the population of the n=2 level is expected to
be the greatest. For a few stars, sample line profiles have been
calculated in the LTE approximation to demonstrate the usefulness of
the tabulated and displayed catalogue.
Description:
This catalogue contains spectroscopic data of 90 stars. A wide variety
of stars were observed at H-α and at P-δ. A few stars were
observed at P-γ. Most of the data were obtained at the Dominion
Astrophysical Observatory (DAO). The remainder of the data were
obtained at the Apache Point Observatory.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
standard.dat 62 76 List of standard stars observed
metalp.dat 60 15 List of metal-poor stars observed
standard/* . 128 FITS files with spectrum of standard stars
metalp/* . 15 FITS files with spectrum of metal-poor stars
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See also:
Byte-by-byte Description of file: standard.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD designation of star
8- 17 A10 --- SpType MK spectral type
20- 24 F5.2 [-] [Fe/H] ?=- Metallicity
26- 37 A12 --- H-Files Names of files with observed H-α spectra
in subdirectory standard (1)
38- 49 A12 --- Pd-Files Names of files with observed P-δ spectra
in subdirectory standard (1)
51- 62 A12 --- Pg-Files Names of files with observed P-γ spectra
in subdirectory standard (1)
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Note (1): Where applicable, file names begin with HD designation and are
followed by an "h", "pd", "pg", or "e" which indicate H-α,
P-δ, P-γ, or echelle, respectively.
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Byte-by-byte Description of file: metalp.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD ? HD designation of star
8- 17 A10 --- BD BD designation of star
20- 26 A7 --- SpType MK spectral type
28- 32 F5.2 [-] [Fe/H] Metallicity
35- 46 A12 --- H-Files Names of files with observed H-α spectra
in subdirectory metalp (1)
49- 60 A12 --- Pd-Files Names of files with observed P-δ spectra
in subdirectory metalp (1)
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Note (1): Where applicable, file names begin with HD designation and are
followed by an "e" which indicates echelle.
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Acknowledgements:
Myra Stone, myrastone0(at)gmail.com
(End) Patricia Vannier [CDS] 10-Sep-2012