J/ApJS/156/227 Radial velocities of 16 Galactic Cepheids (Barnes+, 2005)
Radial velocities of Galactic Cepheids.
Barnes III T.G., Jeffery E.J., Montemayor T.J., Skillen I.
<Astrophys. J. Suppl. Ser., 156, 227-235 (2005)>
=2005ApJS..156..227B 2005ApJS..156..227B
ADC_Keywords: Stars, variable ; Radial velocities
Keywords: binaries: spectroscopic - Cepheids - stars: fundamental parameters
Abstract:
We report 490 radial velocities for 16 Galactic Cepheid variables. The
typical uncertainty of a single velocity is ±0.40km/s. Comparison
with published velocities shows excellent agreement. Two of the
Cepheids (Z Lac, S Sge) are known binaries and exhibit orbital
velocity changes in our observing interval.
Description:
Observations were made using the Sandiford Echelle Spectrometer
mounted at the f/13.5 Cassegrain focus of the 2.1m telescope at
McDonald Observatory. The data were acquired over a period of 2 years:
1995 August 17-1997 September 18. Thirty-nine nights produced usable
Cepheid velocities.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 59 16 Program stars results
table3.dat 56 490 Radial velocities of galactic cepheids
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See also:
J/A+A/415/531 : Radial velocities of 10 Galactic Cepheids (Storm+, 2004)
J/A+AS/140/79 : Radii of 22 galactic Cepheids (Imbert, 1999)
J/A+AS/116/497 : Radial velocities of 4 Cepheids (Imbert, 1996)
J/AJ/115/635 : Cepheid radial velocities (Metzger+ 1998)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Cepheid name
11- 12 I2 h RAh Right Ascension J2000 (hours)
14- 15 I2 min RAm Right Ascension J2000 (minutes)
17- 18 I2 s RAs Right Ascension J2000 (seconds)
20 A1 --- DE- Declination J2000 (sign)
21- 22 I2 deg DEd Declination J2000 (degrees)
24- 25 I2 arcmin DEm Declination J2000 (minutes)
27- 28 I2 arcsec DEs Declination J2000 (seconds)
30- 40 F11.3 d E Epoch of maximum light (HJD)
42- 50 F9.6 d Per Pulsation period
52- 57 F6.3 mag <Vmag> Mean V-band magnitude
59 A1 --- n_Name [B] indicates a Binary star
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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- 7 A7 --- Name Cepheid name
11- 21 F11.3 d E Epoch of maximum light (HJD)
23- 31 F9.6 d Per Pulsation period
33- 37 F5.3 --- Phase [0/1] Pulsation phase
39- 49 F11.3 d HJD Heliocentric Julian Date (Observation)
51- 56 F6.2 km/s RV Radial velocity
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 24-Aug-2005