Contribution a l'etude des spectres composites. IV. Elements orbitaux des binaires spectroscopiques de type AM HD 41724-5 et HD 177390-1.
Abstract
Observations of HD 41724-5 and HD 177390-1 made at the Observatoire de Haute-Provence show them to be detached Am spectroscopic binaries. Results for HD 41724-5 reveal a period of 2.887679 days and suggest that the secondary could be either an F or early G dwarf star. For HD 177390-1, a period of 8.00802 days is found, and the MK spectral types A2, A6, and F4 are obtained from the CaII K line, Balmer lines, and metallic lines, respectively.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- October 1988
- Bibcode:
- 1988A&AS...75..305C
- Keywords:
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- A Stars;
- Binary Stars;
- Stellar Orbits;
- Stellar Spectra;
- Balmer Series;
- Metallicity;
- Orbital Elements;
- Astronomy