J/AJ/80/1011 IRC classification (Hansen+, 1975)
Classification of 831 two-micron sky survey sources south of +5deg
HANSEN O.L., BLANCO V.M.
<Astron. J. 80, 1011 (1975)>
=1975AJ.....80.1011H 1975AJ.....80.1011H (SIMBAD/NED Reference)
Abstract:
Eight hundred thirty-one infrared sources located south of +5deg have
been selected from the Two-Micron Sky Survey (IRC), and studied in an
objective-prism survey. The set consists of all 551 sources which were
not identified in the IRC, 97 source whose identification in the IRC is
questionable, and 183 sources identified by their variable-star catalog
name, but for which no classification is given in the IRC. The great
majority (89%) of the sources studied are M stars, but 49 carbon stars
and seven S stars as well as 17 peculiar stars with emission near
8600A have also been identified. If available, recent classifications
or identifications from other investigators are included
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2 124 832 Classification of southern IRC sources
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1- 6 I6 --- IRC IRC number
8- 12 F5.2 mag Kmag []? K magnitude
14- 17 F4.2 mag I-K []? I-K colour
19- 22 F4.2 mag Vmag []? V magnitude
24- 30 A7 --- Type IRC classification
32- 38 A7 --- Var Star name of those variable stars included in
the program for their lack of classification
40- 48 A9 --- Sp Spectral type
50- 51 A2 --- Bright Relative brightness (1)
53-132 A80 --- com Comments
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Note (1): Subjective estimate of the source brightness as it appears in the
10-min-exposure plates.
vb: very bright
b: bright
mb: medium bright
mf: medium faint
f: faint
vf: very faint
t: trace
nt: no trace
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References:
Albers H., 1972, Astrophys. J. 176, 623
Cohen M., 1971, Astrophys. Lett. 9, 95
Nassau J.J. and Velghe A.A., 1964, Astrophys. J. 139, 190
Schultz C.W. and Wiemer W., 1972, Astron. Astrophys. 20, 317
Wing R.F. et al., 1973, Astrophys. J. 179, 135
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Historical Notes: Keypunched at CDS
(End) Marie-Jose Wagner, Patricia Bauer [CDS] 05-Dec-1994