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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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 70 108 Catalog of high radial velocity stars
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
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
Note (1): a: HD 6023; G6 III, [Fe/H]=-0.57, Mv=1.8, from DDO photometry in Hartkopf & Yoss (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), and Vr=66km/s and [Fe/H]=-1.12 (Ryan & Norris, 1991AJ....101.1835R); proper motion given as µ=228mas/yr, with θ=92° in Ryan & Norris (1991AJ....101.1835R). d: CD - 29 471 = SB 963; identified as sdFG by Graham & Slettebak (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.
History: From PASP electronic version
(End) James Marcout, Patricia Bauer [CDS] 04-Feb-1999
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