J/AJ/124/3393 Spectra of normal stars in the L-band (Wallace+, 2002)
Medium-resolution stellar spectra in the L band from 2400 to 3000 cm-1
(3.3 to 4.2 microns).
Wallace L., Hinkle K.
<Astron. J., 124, 3393-3399 (2002)>
=2002AJ....124.3393W 2002AJ....124.3393W (SIMBAD/NED BibCode)
ADC_Keywords: Atlases ; Spectra, infrared ; Stars, normal
Keywords: infrared radiation - stars: fundamental parameters
Abstract:
We present a brief atlas of L-band (3.3-4.2um) spectra for 42 stars
plus the Sun and a sunspot observed at a resolving power of R∼3000.
This contribution is intended to supplement our previous K-band,
H-band, and J-band spectral atlases. The L-band data, which cover some
or all of the 2400 to 3000cm-1 (3.3-4.2um) region, are mainly for
luminous late-type stars. In reducing these data, special care has
been taken to remove telluric features, especially water vapor. We
identify temperature- and luminosity-sensitive atomic and molecular
indices to aid in the classification of stellar spectra in the L band.
Description:
The data were collected from archival spectra taken with the FTS at
the Kitt Peak National Observatory 4 m telescope. This FTS was
designed for observing stellar sources and featured dual inputs and
dual outputs for maximum sky cancellation and efficiency . The
observations discussed here span 1977 through 1987.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 98 42 List of reduced spectra
table3.dat 54 32 L-band spectral indices
sp/* . 45 Individual spectra
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See also:
http://www.noao.edu/archives.html : NOAO Data Archives, includes
"A Library of Medium Resolution Infrared Stellar Spectra"
J/ApJS/111/445 : Spectra of normal stars in the K band (Wallace+ 1997)
J/ApJ/508/397 : H-band Spectral Standards (Meyer+ 1998)
J/ApJ/535/325 : Spectra of normal stars in the J-band (Wallace+, 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Star HR or HD name
11 A1 --- n_Star [a] Note on Star (1)
14- 27 A14 --- Name Other Name
29- 40 A12 --- SpType MK spectral type
42 I1 --- Ref Reference (2)
44- 54 A11 --- Date1 First observation date
55 A1 --- --- [,]
56- 67 A12 --- Date2 Second observation date
69- 82 A14 --- SP1 Name of the spectrum file for the
first observation, in subdirectory sp
83 A1 --- --- [,]
84- 98 A15 --- SP2 Name of the spectrum file for the
second observation, in subdirectory sp
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Note (1): a AAVSO phases for Miras:
R And = 0.67; ο Cet = 0.87; χ Cyg = 0.17; V Cyg = 0.60
Note (2): Spectral types were obtained from the following sources:
1 = Keenan & Boeshaar, 1980ApJS...43..379K 1980ApJS...43..379K
2 = Hoffleit & Jaschek, 1982, Cat. V/50
3 = Keenan & McNeil, 1989ApJS...71..245K 1989ApJS...71..245K, Cat. III/150
4 = Barnbaum, Stone, & Keenan, 1996, Cat. J/ApJS/105/419
5 = Morgan, Abt & Tapscott 1978, Revised MK Spectral Atlas for Stars Earlier
Than the Sun (Williams Bay: Yerkes Obs.)
6 = our estimate
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name Star name
16 A1 --- n_Name [1/2]? Observation number when more than one
18- 30 A13 --- SpType MK spectral Type
32- 36 F5.3 cm-1 SiO SiO spectral index
38- 42 F5.3 cm-1 MgI MgI spectral index
44- 48 F5.3 cm-1 P19 P19 spectral index
50- 54 F5.3 cm-1 P22 P22 spectral index
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Byte-by-byte Description of file (#): sp/*
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Bytes Format Units Label Explanations
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3- 9 F7.2 cm-1 Freq Frequency
13- 24 E12.7 --- RInt Relative intensity
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 26-Feb-2005