J/MNRAS/371/1159 Orbits of 30 spectroscopic binaries (Griffin+, 2006)
Photoelectric radial velocities. Paper XVII:
The orbits of 30 spectroscopic binaries in the southern Clube Selected Areas.
Griffin R.F.
<Mon. Not. R. Astron. Soc., 371, 1159-1172 (2006)>
=2006MNRAS.371.1159G 2006MNRAS.371.1159G
ADC_Keywords: Binaries, spectroscopic ; Radial velocities
Keywords: techniques: radial velocities - binaries: spectroscopic -
stars: individual: HD 33978 (VV Lep) - stars: late-type
Abstract:
Three of the six southern Clube Areas that were mainly observed at the
European Southern Observatory and whose principal results are given
in Paper XVI (Griffin & Cornell 2006, Cat. J/MNRAS/371/1140) are
marginally observable from Haute-Provence. Additional measurements
obtained on several observing runs there enabled orbits to be
determined (in most cases rather poorly, owing to the paucity of data)
for 30 of the newly discovered spectroscopic-binary systems; they are
presented in this paper. One object, HD 33978, seems to be of such
significance that special efforts have been made, largely by Drs J.
Andersen and H. Lindgren, to obtain additional radial-velocity
measurements. That system is shown to be a double-lined binary with a
period of only 10.67d despite one of its components being a late-type
giant. The giant star has a projected rotational velocity of almost
40km/s; it could be expected to exhibit RS CVn-type photometric
variations, which have not yet been observed, in addition to the
'ellipsoidal variation', discovered by Hipparcos, which occasioned its
designation as VV Lep.
Description:
The radial-velocity measurements of all the stars were begun in the
course of the five observing runs that were allocated to the writer
for the use of the Geneva Observatory's 'Coravel' photoelectric
radial-velocity spectrometer on the Danish 61-inch reflector at ESO.
The observing procedure with that instrument has been described in
Paper XVI (Griffin & Cornell 2006, Cat. J/MNRAS/371/1140).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 44 30 The 30 stars whose orbits are presented below
table31.dat 115 32 Orbital elements and their standard errors
for 28 stars
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See also:
J/MNRAS/371/1140 : K0 stars radial velocities (Griffin+, 2006)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [Area]
6- 7 I2 --- Area Area number
9- 14 I6 --- HD HD number
15 A1 --- m_HD Multiplicity index on HD
16 A1 --- n_HD [*] Note on HD (1)
18- 22 F5.2 mag Vmag V magnitude
24- 27 F4.2 mag B-V B-V colour index
29- 37 A9 --- SpType MK spectral type
39- 40 I2 --- Nobs Number of observations
42- 44 F3.1 km/s sigma Velocity dispersion
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Note (1): *: Double-lined V magnitude from Hipparcos
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Byte-by-byte Description of file: table31.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD number
7 A1 --- m_HD [B] Multiplicity index on HD
9 A1 --- Qual [bcd] Quality flag
11- 19 F9.4 d Per Period
21 A1 --- n_Per [f] f for fixed period (Per=7000d)
22- 29 F8.4 d e_Per ?=- rms uncertainty on Per
31- 38 F8.2 d T Periastron time, T or T0 (in MJD)
39- 44 F6.2 d e_T rms uncertainty on T
46- 51 F6.2 km/s gamma Center-of-mass velocity
53- 55 F3.2 km/s e_gamma rms uncertainty on gamma
57- 61 F5.2 km/s K Velocity amplitude
62- 65 F4.2 km/s e_K rms uncertainty on K
67- 71 F5.3 --- e ?=- Orbital eccentricity
72 A1 --- n_e [f] f for fixed ellipticity (e=0)
73- 76 F4.3 --- e_e ?=- rms uncertainty on e
78- 82 F5.1 deg omega ?=- Argument of periastron
84- 87 F4.1 deg e_omega ?=- rms uncertainty on omega
89- 94 F6.2 Gm asini ?=- Separation, asini
95- 99 F5.2 Gm e_asini ?=- rms uncertainty on asini
101-108 F8.4 solMass f(m) Mass function f(m) or m*(sini)3 (1)
110-115 F6.4 solMass e_f(m) rms uncertainty on f(m)
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Note (1): Mass function fro single-lined binaries, or minimum mass
(m*(sini)3) for double-lined binaries.
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History:
From electronic version of the journal
References:
Griffin, Paper I 1967ApJ...148..465G 1967ApJ...148..465G
Griffin, Paper II 1969MNRAS.145..163G 1969MNRAS.145..163G
Griffin, Paper III 1970MNRAS.148..211G 1970MNRAS.148..211G
Griffin, Paper IV 1971MNRAS.155....1G 1971MNRAS.155....1G
Griffin, Paper V 1972MNRAS.155..449G 1972MNRAS.155..449G
Griffin, Paper VI 1975MNRAS.171..407G 1975MNRAS.171..407G
Griffin, Paper VII 1980MNRAS.190..711G 1980MNRAS.190..711G
Griffin, Paper VIII 1980MNRAS.193..957G 1980MNRAS.193..957G
Griffin, Paper IX 1982MNRAS.200.1161G 1982MNRAS.200.1161G
Griffin, Paper X 1982MNRAS.201..487G 1982MNRAS.201..487G
Griffin, Paper XI 1984MNRAS.210..745G 1984MNRAS.210..745G
Griffin, Paper XII 1985MNRAS.212..663G 1985MNRAS.212..663G
Griffin, Paper XIII 1986MNRAS.219...95G 1986MNRAS.219...95G
Griffin, Paper XIV 1994MNRAS.267...69G 1994MNRAS.267...69G
Griffin, Paper XVI 2006MNRAS.371.1140G 2006MNRAS.371.1140G, Cat. J/MNRAS/371/1140
(End) Patricia Vannier [CDS] 21-May-2007