J/AJ/103/1987 Stars of very low metal abundance (Beers+ 1992)
A search for stars of very low metal abundance. II.
Beers T.C., Preston G.W., Shectman S.A.
<Astron. J. 103, 1987 (1992)>
=1992AJ....103.1987B 1992AJ....103.1987B
ADC_Keywords: Stars, metal-deficient; Equivalent widths; Radial velocities
Description:
Spectroscopic observations for 1044 stars located primarily in the
southern Galactic hemisphere are reported; the stars were chosen from a
list of candidate metal-deficient stars discovered in the HK
objective-prism survey. Radial velocities and line indices based on the
equivalent widths of Ca II, K, H-gamma and H-delta, and the CH G band
are reported. Estimates of metallicity for 874 stars with derived
abundances less than -0.5 are presented.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 136 1044 Observational data, derived distances, and abundances
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See also:
J/AJ/87/1515 : UBV photometry of AB stars in halo (Pier, 1982)
J/ApJS/53/791 : Spectroscopy of AB stars in halo (Pier, 1983)
J/AJ/90/2089 : Stars of very low metal abundance. (Beers+, 1985)
J/PASP/102/1392 : UBV photometry from HK survey. (Doinidis+ 1990)
J/PASP/103/973 : Photoelectric UBV from HK survey. (Doidinis+ 1991)
J/ApJS/76/1001 : UBV photometry of HK survey stars (Preston+, 1991)
J/AJ/103/267 : Spectrocopy of hot stars in galactic halo (Beers+ 1992)
J/AJ/108/268 : HK survey emission-line candidates positions (Beers+ 1994)
J/AJ/108/538 : Metal-poor MS stars UBV photometry (Preston+ 1994)
J/AJ/112/1188 : HK survey emission-line candidates (Beers+ 1996)
J/AJ/117/2329 : Spectroscopy of hot stars in the halo. (Wilhelm+, 1999)
J/ApJS/123/639 : UBV photometry of metal-weak candidates (Norris+, 1999)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [CS] Curtis Schmidt
4- 12 A9 --- BPS-CS Star designation
14- 15 I2 h RAh Right Ascension 1950 (hours)
17- 18 I2 min RAm Right Ascension 1950 (minutes)
20- 23 F4.1 s RAs Right Ascension 1950 (seconds)
25 A1 --- DE- Declination 1950 (sign)
26- 27 I2 deg DEd Declination 1950 (degrees)
29- 30 I2 arcmin DEm Declination 1950 (minutes)
32- 33 I2 arcsec DEs Declination 1950 (seconds)
35- 39 F5.1 deg GLON Galactic longitude
41- 45 F5.1 deg GLAT Galactic latitude
47- 51 F5.2 mag Vmag ? Johnson V magnitude
53- 57 F5.2 mag B-V ? Johnson B-V color
59- 63 F5.2 mag U-B ? Johnson U-B color
65- 68 F4.2 mag E(B-V) B-V excess
70- 73 F4.2 mag BV ? BV color estimate, obtained from calibration
of Balmer Index HP
75- 78 I4 km/s RV Radial velocity
80- 82 A3 --- Det Detector Identification:
R = Reticon; F = 2D-Frutti; R/F = both
84- 88 F5.2 0.1nm KP CaII K equivalent width index KP (Angstroms)
90- 94 F5.2 0.1nm HP ? Balmer line equivalent width index HP (1)
96-100 F5.2 0.1nm GP ? G-band equivalent width index GP (Angstroms)
102-104 A3 --- Class Classification of stellar type
106-110 F5.2 mag Mv ? Absolute magnitude estimate
112-115 F4.1 kpc Dist ? Distance estimate (kpc)
117-121 F5.2 0.1nm Wk ? Interstellar CaII K estimate
(as in Beers 1990AJ.....99..323B 1990AJ.....99..323B)
123-127 F5.2 Sun [Fe/H]k ? estimate from Norris models
129-133 F5.2 Sun [Fe/H]c ? adopted estimate
136 A1 --- D [D] indicates duplicity, see the list in
the "Duplicated stars" section below.
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Note (1): HP is an average of H lines:
HP = -0.276 + 0.5Hδ + 0.588Hγ
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Duplicated stars:
CS 22173-002 = CS 30494- 4
CS 22173-007 = CS 30494- 20
CS 22173-014 = CS 30494- 15
CS 22173-015 = CS 30494- 40
CS 22173-021 = CS 30494- 33
CS 22886-008 = CS 29512- 6
CS 22886-012 = CS 29512- 15
CS 22886-013 = CS 29512- 13
CS 22886-022 = CS 29512- 18
CS 22886-029 = CS 29512- 27
CS 22886-042 = CS 29512- 51
CS 22888-014 = CS 30493- 23
CS 22888-039 = CS 30493- 56
CS 22937-034 = CS 30492- 56
CS 22937-042 = CS 30492- 76
CS 22937-072 = CS 30492-102 = CS 29501- 51
CS 22937-073 = CS 29501- 52
CS 29513-016 = CS 30493- 74
References:
Beers et al., Paper I, 1985AJ.....90.2089B 1985AJ.....90.2089B, Cat. J/AJ/90/2089
Norris et al., Paper III, 1999ApJS..123..639N 1999ApJS..123..639N, Cat. J/ApJS/123/639
Anthony-Twarog et al., Paper IV, 2000AJ....119.2882A 2000AJ....119.2882A
Bonifacio et al., Paper V, 2000AJ....120.2065B 2000AJ....120.2065B
Roederer et al., Paper VI, 2014AJ....147..136R 2014AJ....147..136R, Cat. J/AJ/147/136
History:
* 21-Apr-1993: the catalog was kindly provided by T. Beers to N. Roman (ADC)
* 11-Dec-1997: the CS numbers have been filled with zeroes.
* 17-Dec-2005: ReadMe revisited
(End) Francois Ochsenbein [CDS] 15-Dec-1993