V/65 Spectroscopically Selected Halo K Giants (Ratnatunga+ 1989)
A Spectroscopically Selected Catalog of K Giants in the Galactic Halo
Ratnatunga K.U., Freeman K.C.
<Astrophys. J., 339, 126 (1989)>
=1989ApJ...339..126R 1989ApJ...339..126R
ADC_Keywords: Abundances, [Fe/H] ; Radial velocities ; Stars, giant ;
Stars, halo ; Stars, high-velocity
Description:
The catalog results from a survey for distant Field K giants in the
Galactic halo made for purposes of locating a chemically and
kinematically unbiased sample out to about 25 kpc from the Sun.
The motivation for the study and sample selection are outlined by
Ratnatunga & Freeman (1985ApJ...291..260R 1985ApJ...291..260R), while details and analysis
of the results will be found in Ratnatunga & Freeman (1989). Three
high-galactic latitude fields each of 20 square degrees, designated by
their Selected-Area identifications, include the following: SA 141
(l=240,b=-85); SA 189 (277, -50); and SA 127 (272, +38), and have the
apparent magnitude range 13 < V < 16 and color range (B-V) > 0.9.
Stars were selected from PDS photographic photometry of Schmidt plates
(see Ratnatunga 1983, catalog II/121). K-giant selection used the
Mgb+MgH feature at 5100A from digital image analysis of PDS scans of
ESO 1-m Schmidt telescope objective-prism spectra with 450 A/mm at
H-gamma resolution on IIIa-J plates exposed through a Schott GG475
filter. Luminosity confirmation, line-of-sight velocities, and
metallicity were determined from 2-A resolution slit spectra taken
with the 4-m Anglo- Australian and 1.9-m Mount Stromlo telescopes.
Cross identifications exist for some stars in the SA 141 SGP field
only.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
kgiants.dat 93 106 Catalog Data
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Byte-by-byte Description of file: kgiants.dat
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Bytes Format Units Label Explanations
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1- 8 F8.4 deg GLON Galactic longitude
10- 17 F8.4 deg GLAT Galactic latitude
19- 23 F5.2 mag V Photoelectric V magnitude on UBV system
25- 29 F5.2 mag B-V Photoelectric B-V color on UBV system
31- 35 F5.2 mag M(V) Absolute visual magnitude
37- 41 F5.2 --- [Fe/H] Fe/H value relative to Sun (brackets omitted)
43- 46 F4.1 kpc D Photometric distance
48- 52 F5.0 km/s RV Radial (line-of-sight) velocity
54- 55 I2 h RAh Right Ascension 1950 (hours)
56- 57 I2 min RAm Right Ascension 1950 (minutes)
58- 60 I3 0.1s RAds Right Ascension 1950 (deci-seconds)
62 A1 --- DE- Declination 1950 (sign)
63- 64 I2 deg DEd Declination 1950 (degrees)
65- 66 I2 arcmin DEm Declination 1950 (minutes)
67- 68 I2 arcsec DEs Declination 1950 (seconds)
70- 78 A9 --- RF Star designation from Ratnatunga & Freeman
(1985ApJ...291..260R 1985ApJ...291..260R)
80- 87 A8 --- E Star designation from Eriksson (1978)
89- 93 A5 --- BB Star designation from Bok & Basinski
(1964MmMtS..16.....B 1964MmMtS..16.....B)
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Historical notes:
The catalogue was received from the Astronomical Data Center; the Format
part has been standardised at CDS. Original summary and format description
was prepared at the Astronomical Data Center, National Space Science Data
Center / World Data Center A for Rockets and Satellites, NASA Goddard Space
Flight Center. Wayne H. Warren Jr., Kavan U. Ratnatunga, 1990 November.
References:
Bok, B.J., & Basinski J. 1964, Mem. Mt. Stromlo Obs. 16 (1964MmMtS..16.....B 1964MmMtS..16.....B)
Eriksson, P-I. W. 1978, Uppsala Astr. Obs. Report No. 11
Ratnatunga, K. U. 1983, Ph.D. thesis, The Australian National University
(Catalog: II/121)
Ratnatunga, K. U., & Freeman, K. C. 1985, ApJ, 291, 260 (1985ApJ...291..260R 1985ApJ...291..260R)
Ratnatunga, K. U., & Freeman, K. C. 1989, ApJ, 339, 126 (1989ApJ...339..126R 1989ApJ...339..126R)
(End) C.-H. Joseph Lyu [Hughes STX/NASA] 16-Aug-1995