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 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:
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RA (2000) DE Name
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05 24 28.58 -02 23 49.5 Eta Ori = HD 35411 = HR 1788
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 34 219 Barycentric radial velocity measurements of
eta Ori Aa and Ab of the 1993 observations
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Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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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
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Courtesy: K. De Mey,
(End) Patricia Bauer [CDS] 28-Feb-1996