III/105 Radial Velocities of Southern Stars with CORAVEL (Andersen+ 1985)
Radial Velocities of Southern Stars Obtained with the Photoelectric Scanner
CORAVEL. III. 790 Late-Type Bright Stars
Andersen J., Nordstroem B., Ardeberg A., Benz W., Imbert M.,
Lindgren H., Martin N., Maurice E., Mayor M., Prevot L.
<Astron. & Astrophys. Suppl. 59, 15 (1985)>
=1985A&AS...59...15A 1985A&AS...59...15A
ADC_Keywords: Stars, bright; Radial velocities
Description:
The catalog contains 1595 photoelectric radial-velocity observations
for 790 bright southern stars of spectral type F5 and later. One of
the purposes of this project is to make a complete southern sky radial
velocity coverage using the second CORAVEL photoelectric radial
velocity scanner. The first CORAVEL operating at Observatoire de
Haute-Provence was used to observe the stars in the Northern
Hemisphere. Two CORAVEL observations per star were made with CORAVEL
photoelectric radial velocity scanner on the Danish 1.54-m telescope
at ESO, La Silla, Chile. The mean velocities are accurate to about
0.15 km/s r.m.s. for sharp-lined constant stars, errors increasing
somewhat for stars with significant rotation. The present data
complete and supersede the preliminary data for 500 stars supplied in
advance of publications for inclusions in the fourth edition of The
Bright Star Catalogue. At the time this project was planned, there
were still some 1500 stars in The Bright Star Catalogue for which no
radial-velocity information was available -- virtually all of them
in the Southern Hemisphere. For the stars of type F5 and later,
photoelectric scanning techniques can be used with much increased
efficiency and accuracy. The catalog includes HD numbers with
component designation for visual binary components from Jeffers et al.
(1963), HR numbers, FK4 or FK4 Supplement numbers, visual magnitudes,
MK spectral classes, mean velocities, velocity variability parameters,
rotation classes as assigned from the measured linewidths, and remarks
and information for individual measurements in a separate file.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
meanvel.dat 70 790 Mean Velocities
obsvel.dat 45 1595 Observations
remarks.dat 58 129 Remarks
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Byte-by-byte Description of file: meanvel.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD number (Cat. III/135)
7- 8 A2 --- m_HD HD suffix (component for double stars)
11- 14 I4 --- HR ? Bright Star Catalog number (Cat. V/50)
18- 20 F3.1 mag Vmag Visual magnitude (1)
21 A1 --- Var [V] 'V' for variable.
23- 38 A16 --- Sp MK spectral class (1)
41- 46 F6.2 km/s RV Mean radial velocity
47- 52 F6.2 km/s e_RV RV mean error (2)
53- 58 F6.1 --- RVvar ? Velocity variability parameter (3)
61 I1 --- Nobs Number of observations contributing to RV.
63- 70 A8 --- rem Notes regarding variability; "REM" indicates
longer remarks detailed in "remarks.dat".
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Note (1):
From an updated version of the Bright Star Catalogue on magnetic tape
supplied to the catalog authors by the Centre de Donnees Stellaires in 1981.
Note (2):
Root mean square error in the mean radial velocity in km/s. Andersen
and Nordstrom (1983A&A...122...23A 1983A&A...122...23A) and Andersen et al. (1985) for a
discussion of sources of error and the derivation of the error estimate.
Note (3):
Velocity variability parameter, defined as "the ratio ... between the
actual r.m.s. dispersion (σE) of the observed velocities and that
(σT) expected for a constant-velocity star on the basis of the
uncertainty of each measurement, taking all error sources into account.
For n = 2 observations, we adopt RVvar>2.0 and RVvar>3.0 as the
criteria for possible and certain variability, respectively." See
the paper for a brief discussion of the relationship between this
parameter and the r.m.s. error in the mean velocity.
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The individual observations:
This file lists 1,595 individual CORAVEL observations. Generally, each
program star was observed only twice. A blank record separates observations
of successive objects.
Byte-by-byte Description of file: obsvel.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD number
7 A1 --- m_HD HD suffix (component for double stars)
8- 16 F9.3 JD HJD ? Heliocentric Julian date (JD-2440000)
17- 24 F8.2 km/s RV ? Observed Radial velocity
27- 30 F4.2 km/s e_RV ? Computed r.m.s. error in the RV
33- 45 A13 --- rem Remarks (1)
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Note (1):
Remarks concerning this observation. "PR" and "SEC" indicate the
primary and secondary components, respectively, of a double-line
binary system. "REM" indicates that there is a remark about this
observation in the remarks file.
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Byte-by-byte Description of file: remarks.dat
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Bytes Format Units Label Explanations
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1- 7 I7 --- HD HD number
8 A1 --- m_HD HD suffix (component for double stars)
15- 58 A44 --- rem Remarks (1)
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Note (1):
"BE" refers to Beavers and Eitter (1981PASP...93..765B 1981PASP...93..765B).
"AN" refers to Andersen and Nordstrom (1983A&AS...52..479A 1983A&AS...52..479A).
A number in parentheses is a number of observations.
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Remarks and Modifications:
* 07-Jan-1997 (C.-H. Joseph Lyu & Paul Kuin, Hughes STX/NASA ADC):
Radial Velocities of Southern Stars Obtained with the Photoelectric
Scanner CORAVEL. III. 790 Late-Type Bright Stars (RVSS3) was received
by the Astronomical Data Center (ADC), NASA Goddard Space Flight
Center, from the Centre de Donnees Astronomiques, Strasbourg (CDS), in
July 1985. The tape contained three files: the first listing the
radial velocity results, the second listing the observations, and the
third containing the remarks, all formatted in the same manner as the
published catalog. Several records containing descriptive information
were deleted from the beginning of each file and blank columns were
removed by means of an editor.
* 16-Feb-2008: empty lines in the different files removed.
Acknowledgments:
The original ADC documentation by A. C. Raugh (1988) was used to
create this ReadMe file by J. Lyu.
References:
Andersen, J. and Nordstrom, B. 1983a, Astron. Astrophys., 122, 23.
(1983A&A...122...23A 1983A&A...122...23A)
Andersen, J. and Nordstrom, B. 1983b, Astron. Astrophys. Suppl. Ser., 52,
471. (1983A&AS...52..471A 1983A&AS...52..471A)
Andersen, J. and Nordstrom, B. 1983c, Astron. Astrophys. SuppL Ser., 52, 479.
(1983A&AS...52..479A 1983A&AS...52..479A, Cat. III/127)
Andersen, J. 1985, unpublished documentation supplied with the catalog
by the CDS.
Andersen, J. 1987, private communication.
Beavers, W.I. and Eitter, J. J. 1981, Publ. Astron. Soc. Pac., 93, 765.
(1981PASP...93..765B 1981PASP...93..765B)
Hoffleit, D. 1964, Catalogue of Bright Stars, 3rd ed. (New Haven: Yale
University Observatory; see Cat. V/50).
Hoffleit, D. 1982, Catalogue of Bright Stars, 4th ed. (New Haven: Yale
University Observatory; see Cat. V/50).
Jeffers, H.M., van den Bos, W.H., Greeby, F.M. 1963, Publ. Lick Obs.,
Vol. 21
(End) C.-H. Joseph Lyu, Paul Kuin [Hughes STX/NASA ADC] 07-Jan-1997