J/ApJS/141/503 Radial Velocities for 889 late-type stars (Nidever+, 2002)
Radial velocities of 889 late-type stars
Nidever D.L., Marcy G.W., Butler R.P., Fischer D.A., Vogt S.S.
<Astrophys. J. Suppl. Ser. 141, 503 (2002)>
=2002ApJS..141..503N 2002ApJS..141..503N
ADC_Keywords: Stars, late-type ; Radial velocities
Keywords: stars: fundamental parameters; late-type; kinematics -
techniques: radial velocities; spectroscopic -
catalogs: binaries: spectroscopic
Abstract:
We report radial velocities for 844 FGKM-type main sequence and
subgiant stars and 45 K giants, most of which had either low-precision
velocity measurements or none at all. These velocities differ from the
standard stars of Udry et al. (1999IAUCo.170..354U 1999IAUCo.170..354U) by 0.035km/s (RMS)
for the 26 FGK standard stars in common. The zero-point of our
velocities differs from that of Udry et al.:
<Vpresent-VUdry≥+0.053km/s. Thus these new velocities agree with
the best known standard stars both in precision and zero-point, to
well within 0.1km/s.
Nonetheless, both these velocities and the standards suffer from three
sources of systematic error, namely, convective blueshift,
gravitational redshift, and spectral type mismatch of the reference
spectrum. These systematic errors are here forced to be zero for G2V
stars by using the Sun as reference, with Vesta and day sky as
proxies. But for spectral types departing from solar, the systematic
errors reach 0.3km/s in the F and K stars and 0.4km/s in M dwarfs.
Multiple spectra were obtained for all 889 stars during four years,
with the HIRES echelle spectrometer (Vogt et al., 1994, , Proc. Soc.
Photo-Opt. Instr. Eng., 2198, 362) on the 10m Keck I telescope and
with the "Hamilton" echelle spectrometer fed by either the 3m Shane or
the 0.6m Coude Auxilliary (CAT) Telescopes (Vogt, 1987PASP...99.1214V 1987PASP...99.1214V),
and 782 of them exhibit velocity scatter less than 0.1km/s. These
stars may serve as radial velocity standards if they remain constant
in velocity. We found 11 new spectroscopic binaries and report orbital
parameters for them.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 50 782 Radial velocities of stable stars with RMS<100m/s
table2.dat 75 107 Radial velocities of stars with RMS >0.1km/s
table3.dat 125 15 Orbital parameters of 15 stars with companions
table4.dat 40 30 Stars with linear trends
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See also:
III/21 : General catalogue of stellar radial velocity (Wilson, 1953)
III/190 : WEB Catalog of Radial Velocities (Duflot+ 1995)
III/213 : General Catalog of mean radial velocities (Barbier-Brossat+, 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Primary name
14- 25 A12 --- AName Alternative name
27- 29 A3 --- Ref [NSO M] Stellar spectrum used as the template
(NSO: National Solar Observatory or
M: M dwarf composite)
31- 37 I7 JD Date Mean time of observation
39- 42 I4 d DeltaT ?=0 Span of observations (1)
44- 50 I7 m/s Mean barycentric radial velocity
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Note (1): Stars with only one observation were put in the table even though
the RMS scatter is not defined. They can be distinguished by DeltaT=0.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Primary name
14- 25 A12 --- AName Alternative name
27- 29 A3 --- Ref [NSO M] Stellar spectrum used as the template
(NSO: National Solar Observatory, M: M dwarf)
31- 41 F11.3 d JD Time of observation
43- 48 I6 m/s RV Barycentric radial velocity
50- 56 I7 d Mean time of observation
58- 61 I4 d DeltaT Span of observations (1)
63- 67 I5 m/s RMS RMS scatter of velocity of all observations
69- 71 I3 --- o_RV Number of observations
73- 74 A2 --- Com [AL CO] Comments (2)
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Note (1): Stars with only one observation were put in the table even though the
RMS scatter is not defined. They can be distinguished by DeltaT=0.
Note (2): Comments on stars with companion orbit or linears trends:
L: velocity varies linearly with time (see table4.dat)
CO: a companion and its orbit were found
C: a published companion exists but an orbit is not given here
A: the star is chromospherically active based on the emission
reversal seen at the Ca II H&K lines in our spectrum
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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- 9 A9 --- Name Primary name
11- 19 F9.4 d Per Orbital period
21- 29 F9.4 d e_Per rms uncertainty on Per
31- 35 F5.2 km/s K Velocity semi-amplitude
37- 40 F4.2 km/s e_K rms uncertainty on K
42- 45 F4.2 --- Ecc Eccentricity
47- 51 F5.3 --- e_Ecc ? rms uncertainty on Ecc
52 A1 --- n_Ecc [f] f: fixed
54- 56 I3 deg omega Longitude of periastron
58- 61 F4.1 deg e_omega rms uncertainty on omega
63- 73 F11.3 d T0 Time of periastron passage
75- 82 F8.4 d e_T0 rms uncertainty on T0
84- 87 F4.2 solMass M1 Mass of the primary
89- 93 F5.1 --- M2,min Minimum mass of the secondary, in Jupiter mass
95- 98 F4.2 AU amin Minimum semi-major axis
100-107 F8.6 solMass f(M) Mass function = (M2*sini)3/(M1+M2)2
109-125 A17 --- Ref References (1)
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Note (1): References:
1: Duquennoy & Mayor, 1991A&A...248..485D 1991A&A...248..485D
2: Martin et al., 1998A&AS..133..149M 1998A&AS..133..149M
3: Blazit et al., 1987A&AS...71...57B 1987A&AS...71...57B
4: Kamper, 1987AJ.....93..683K 1987AJ.....93..683K
5: Wagman, 1949AJ.....54Q.138W 1949AJ.....54Q.138W
6: Beavers & Salzer, 1983PASP...95...79B 1983PASP...95...79B
7: Kamper & Lyons, 1981JRASC..75...56K 1981JRASC..75...56K
8: Halbwachs et al., 2000A&A...355..581H 2000A&A...355..581H
9: Mazeh et al., 1996, Cat. J/ApJ/466/415
10: Oetik er et al., 2001PASP..113..703O 2001PASP..113..703O
11: Mayor et al., 1997IAUCo.161..313M 1997IAUCo.161..313M
12: McCarthy 1986; in Astrophysics of Brown Dwarfs, ed. M.C. Kafatos,
R.S. Harrinton and S.P Maran (Cambridge University Press), p. 9.
13: Barbieri et al., 1996A&A...315..418B 1996A&A...315..418B
14: Henry & McCarthy, 1993, Cat. J/AJ/106/773
15: Marcy & Moore, 1989ApJ...341..961M 1989ApJ...341..961M
16: McCarthy & Henry, 1987ApJ...319L..93M 1987ApJ...319L..93M
17: Lippincott & Borgman, 1978PASP...90..330L 1978PASP...90..330L
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Primary name (HD name)
10 A1 --- n_Name [ab] Note on Name (1)
12- 21 A10 --- AName Alternate name (HIP name)
23- 30 F8.3 m/s/d Slope Slope of the radial velocity
32- 36 F5.3 m/s/d e_Slope rms uncertainty on Slope
38- 39 I2 --- Nobs Number of observations
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Note (1): a: Exhibits some additional positive curvature
b: Exhibits some additional negative curvature
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Acknowledgements: David Nidever
(End) Patricia Bauer [CDS] 10-Apr-2002