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J/A+A/310/164       Line profile variations in eta Ori           (De Mey+, 1996)

The early-type multiple system Eta Orionis. II. Line profile variations in component Ab De Mey K., Aerts C., Waelkens C., van Winckel H. <Astron. Astrophys. 310, 164 (1996)> =1996A&A...310..164D (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, spectroscopic; Stars, variable; Radial velocities Keywords: stars: binaries: eclipsing - stars: binaries: spectroscopic - stars: oscillations - stars: individual: Eta Orionis - line: profiles Description: Eta Orionis (HD35411) is a multiple system which consists of at least four early B-type stars. In the present paper we focus on the double-lined spectroscopic eclipsing pair Aab, and in particular on component Ab, which is a remarkable intrinsically variable star. The presence of this variable in an eclipsing system enables us to determine accurately its mass, radius, inclination angle and rotation period. Objects: --------------------------------------------------------------------------- RA (2000) DE Name --------------------------------------------------------------------------- 05 24 28.58 -02 23 49.5 Eta Ori = HD 35411 = HR 1788 --------------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1 34 219 Barycentric radial velocity measurements of eta Ori Aa and Ab of the 1993 observations
Byte-by-byte Description of file: table1
Bytes Format Units Label Explanations
1- 11 F11.3 d HJD Heliocentric Julian Date of observation 13- 17 F5.3 --- Phase [0/1] Orbital phase 19- 24 F6.1 km/s RV1 Primary heliocentric average radial velocity 26 I1 --- o_RV1 Number of lines included to obtain each average velocity for the primary 28- 33 F6.1 km/s RV2 ? Secondary heliocentric average radial velocity
Courtesy: K. De Mey,
(End) Patricia Bauer [CDS] 28-Feb-1996
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