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Titolo:
Orbital and stellar parameters of Omicron Leonis from spectroscopy and interferometry
Autore:
Hummel, CA; Carquillat, JM; Ginestet, N; Griffin, RF; Boden, AF; Hajian, AR; Mozurkewich, D; Nordgren, TE;
Indirizzi:
USN Observ, Astrometry Dept, Washington, DC 20392 USA USN Observ Washington DC USA 20392 rometry Dept, Washington, DC 20392 USA Observ Midi Pyrenees, Astrophys Lab, F-31400 Toulouse, France Observ Midi Pyrenees Toulouse France F-31400 b, F-31400 Toulouse, France Univ Cambridge, The Observatories, Cambridge CB3 0HA, England Univ Cambridge Cambridge England CB3 0HA ies, Cambridge CB3 0HA, England CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA CALTECH Pasadena CA USA 91109 LTECH, Jet Prop Lab, Pasadena, CA 91109 USA USN, Remote Sensing Div, Res Lab, Washington, DC 20375 USA USN WashingtonDC USA 20375 ensing Div, Res Lab, Washington, DC 20375 USA USN Observ, NPOI, Flagstaff, AZ 86002 USA USN Observ Flagstaff AZ USA 86002 N Observ, NPOI, Flagstaff, AZ 86002 USA
Titolo Testata:
ASTRONOMICAL JOURNAL
fascicolo: 3, volume: 121, anno: 2001,
pagine: 1623 - 1635
SICI:
0004-6256(200103)121:3<1623:OASPOO>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
PROTOTYPE OPTICAL INTERFEROMETER; RADIAL-VELOCITY SPECTROMETER; EFFECTIVE TEMPERATURES; BOLOMETRIC CORRECTIONS; COMPOSITE SPECTRA; VISUAL ORBIT; BINARY STARS; TRANSFORMATIONS; ADJUSTMENT; DIAGRAMS;
Keywords:
binaries : spectroscopic; binaries : visual; stars : fundamental parameters; stars : individual (o Leonis); techniques : interferometric;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
59
Recensione:
Indirizzi per estratti:
Indirizzo: Hummel, CA USN Observ, Astrometry Dept, 3450 Massachusetts Ave NW, Washington, DC 20392 USA USN Observ 3450 Massachusetts Ave NW Washington DC USA 20392 SA
Citazione:
C.A. Hummel et al., "Orbital and stellar parameters of Omicron Leonis from spectroscopy and interferometry", ASTRONOM J, 121(3), 2001, pp. 1623-1635

Abstract

We present a three-dimensional solution for the orbit of the double star Omicron Leonis, based on new photoelectric radial velocity data mainly from the Observatoire de Haute-Provence and on interferometric data obtained with the Navy Prototype Optical Interferometer, the Mark III Stellar Interferometer, and the Palomar Testbed Interferometer. Omicron Leo's primary is a giant of type F9 and the secondary is an A5m dwarf, for which we derive masses of 2.12 +/- 0.01 M. and 1.87 +/- 0.01 M ., respectively. The distance tothe binary is determined to be 41.4 +/- 0.1 pc. Combining the distance with the measured apparent magnitudes and color differences between the components yields luminosities of 39.4 +/- 2.4 L. and 15.4 +/- 1.0 L. for primaryand secondary, respectively. Data from the Palomar Testbed Interferometer taken at 2.2 mum are used to constrain the photometry in the infrared.

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Documento generato il 23/11/20 alle ore 19:41:29