J/PASP/110/1434 High-velocity stars radial velocities (Stock+, 1998)
Digital objective prism spectroscopy and astrometry: quantitative methods and
application to high-velocity stars.
Stock J., Rose J.A., Agostinho R.J.
<Publ. Astron. Soc. Pac. 110, 1434 (1998)>
=1998PASP..110.1434S 1998PASP..110.1434S
ADC_Keywords: Stars, high-velocity ; Radial velocities
Keywords: galaxy: kinematics and dynamics - stars: kinematics - astrometry -
techniques: radial velocities
Abstract:
We describe methods for extracting quantitative spectra and
astrometric positions from objective prism plates. In particular, we
have studied 7161 stars in eight fields along the south Galactic
meridian using the 6°+4° objective prisms on the Curtis
Schmidt telescope at Cerro Tololo Inter-American Observatory. In this
paper we concentrate on techniques for deriving radial velocities and
astrometric positions from opposed dispersion plate pairs. For our
data the typical accuracy in radial velocity is ∼8km/s. A catalog of
108 stars with high radial velocities is presented, which is complete
(and unbiased in either kinematics or metallicity) to a limiting B
magnitude of 12.5 in the eight fields studied. Only two of this sample
of 108 stars have previously reported radial velocities.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 70 108 Catalog of high radial velocity stars
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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- 6 A6 --- [SRA98] Star Number
7 A1 --- n_[SRA98] Note on individual star (1)
9- 10 I2 h RAh Right ascension (J2000)
12- 13 I2 min RAm Right ascension (J2000)
15- 20 F6.3 s RAs Right ascension (J2000)
22- 26 F5.3 s e_RAs rms uncertainty on right ascension
28 A1 --- DE- Declination sign (J2000)
29- 30 I2 deg DEd Declination (J2000)
32- 33 I2 arcmin DEm Declination (J2000)
35- 39 F5.2 arcsec DEs Declination (J2000)
41- 44 F4.2 arcsec e_DEs rms uncertainty on declination
46- 48 I3 mas/yr pmRA ? Proper motion in right ascension
50- 53 I4 mas/yr pmDE ? Proper motion in declination
55- 58 F4.1 mag Pmag P magnitude (B+0.22(B-V))
60- 65 F6.1 km/s RV Radial velocity
67- 70 F4.1 km/s e_RV rms uncertainty on RV
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Note (1): a: HD 6023; G6 III, [Fe/H]=-0.57, Mv=1.8, from DDO photometry
in Hartkopf & Yoss (1982AJ.....87.1679H 1982AJ.....87.1679H)
b: Star 507335 in Flynn & Freeman, 1993, Cat. J/A+AS/9/835;
Vr=118km/s, and [Fe/H]=-0.63 and Mv=1.38 from their DDO
photometry.
c: LTT 728 = G268-151; previously reported radial velocities and
[Fe/H] are Vr=79km/s and [Fe/H]=-0.7 (Carney & Peterson,
1988AJ.....96..378C 1988AJ.....96..378C), and Vr=66km/s and [Fe/H]=-1.12
(Ryan & Norris, 1991AJ....101.1835R 1991AJ....101.1835R); proper motion given as
µ=228mas/yr, with θ=92° in Ryan & Norris
(1991AJ....101.1835R 1991AJ....101.1835R).
d: CD - 29 471 = SB 963; identified as sdFG by Graham & Slettebak
(1973AJ.....78..295G 1973AJ.....78..295G); uvby photometry given there.
e: Star 512589 in Flynn & Freeman, 1993, Cat. J/A+AS/9/835;
[Fe/H]=-0.77 and Mv=0.86 from their DDO photometry.
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History: From PASP electronic version
(End) James Marcout, Patricia Bauer [CDS] 04-Feb-1999