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III/105 Radial Velocities of Southern Stars with CORAVEL (Andersen+ 1985)
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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., Lindgre
H., Martin N., Maurice E., Mayor M., Prevot L.
<Astron. & Astrophys. Suppl. 59, 15 (1985)>
=1985A&AS...59...15A
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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/sec 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
meanvels.dat 70 790 Mean Velocities
obs.dat 45 2384 Observations
remarks.dat 60 248 Remarks
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The mean radial velocity data:
This file contains the identifying information and mean radial velocity
results for 790 bright southern stars of type F5 or later. In all cases, a
blank field indicates no data.
Byte-by-byte Description of file: meanvels.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD number
7- 8 A2 --- HDsuffix *HD suffix
11- 14 I4 --- HR ? HR number
18- 20 F3.1 mag Vmag *Visual magnitude
21 A1 --- Vflag *[V] Visual mag. flag
23- 38 A16 --- Sp *MK spectral class
41- 46 F6.2 km/s RV Mean radial velocity
47- 52 F6.2 km/s e_RV *RV mean error
53- 58 F6.1 --- RVvar *?Velocity variability parameter
61 I1 --- NObs *Number of obs.
63- 70 A8 --- rem *Notes
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Note on HDsuffix:
Component designation from Jeffers et al. (1963) .
Note on Vmag:
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 on Vflag:
"V" if the star is variable.
Note on Sp:
MK spectral class also from the magnetic tape version of the Bright Star
Catalogue supplied by the CDS.
Note on e_RV:
Root mean square error in the mean radial velocity in km/s. Andersen and
Nordstrom (1983a) and Andersen et al. (1985) for a discussion of sources of
error and the derivation of the error estimate.
Note on RVvar:
Velocity variability parameter, defined as "the ratio ... between the actual
r.m.s. dispersion (SigmaE) of the observed velocities and that (SigmaT)
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 Andersen et al. (1985)
for a brief discussion of the relationship between this parameter and the
r.m.s. error in the mean velocity.
Note on NObs:
Number of observations contributing to the radial velocity in bytes 41-46.
Note on rem:
Notes regarding variability. "REM" indicates that a remark concerning this
object can be found in remarks.dat.
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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: obs.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD ? HD number
7 A1 --- HDsuffix *HD suffix
8- 16 F9.3 --- JD *?Julian Date
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
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Note on HDsuffix:
Component designation from Jeffers et al. (1963).
Note on JD:
Heliocentric Julian date (-2,440,000) of the observation.
Note on rem:
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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Remarks to the data file:
This file lists remarks to the data in the first and second files,
meanvels.dat and obs.dat. It is sorted by HD number. Remarks for
successive objects are separated by a blank record.
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 --- HDsuffix *HD suffix
15- 60 A46 --- rem *Remark
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Note on HDsuffix:
Component designation from Jeffers et al. (1963).
Note on rem:
Text of the remark. When bytes 1-8 are blank this field
continues the remark from the previous record. "BE" refers
to Beavers and Eitter (1981). "AN" refers to Andersen
and Nordstrom (1983c). A number in parentheses is a
number of observations.
Remarks and Modifications:
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.
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.
Andersen, J. and Nordstrom, B. 1983b, Astron. Astrophys. Suppl. Ser., 52,
471.
Andersen, J. and Nordstrom, B. 1983c, Astron. Astrophys. SuppL Ser., 52, 479.
Andersen, J. 1985, unpublished documentation supplied with the catalog by
the CDS.
Andersen, J., Nordstrom, B., Ardeberg, A., Benz, W., Imbert, M., Lindgren,
H., Marin, N., Maurice, E., Mayor, M., and Prevot, L. 1985, Astron.
Astrophys. Suppl. Ser., 59, 15.
Andersen, J. 1987, private communication.
Beavers, W.I. and Eitter, J. J. 1981, Publ. Astron. Soc. Pac., 93, 765.
Hoffleit, D. 1964, Catalogue of Bright Stars, 3rd ed. (New Haven: Yale
University Observatory).
Hoffleit, D. 1982, Catalogue of Bright Stars, 4th ed. (New Haven: Yale
University Observatory).
Jeffers, H.M., van den Bos, W.H., Greeby, F.M. 1963, Publ. Lick Obs.,
Vol. 21
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(End) C.-H. Joseph Lyu, Paul Kuin [Hughes STX/NASA ADC] 7-Jan-1997