Title: A model for the 89-herculis system
Authors: Waters, L
Waelkens, Christoffel
Mayor, M
Trams, Nr
Issue Date: Mar-1993
Publisher: Springer verlag
Series Title: Astronomy and astrophysics vol:269 issue:1-2 pages:242-248
Abstract: We report new radial velocity measurements of the F2 supergiant 89 Her, that confirm the binary nature of this star. A period search yields an orbital period of 288.4 +/- 0.7 days, in close agreement with earlier results. We also present intermediate resolution spectra in the wavelength range 3500-11000 angstrom, with numerous emission lines. We use the available spectroscopic and photometric data to construct a qualitative model for the circumstellar envelope of 89 Her, and suggest that it is highly non-spherical as a result of binary evolution. We discuss the evolutionary status of the 89 Her system.
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Institute of Astronomy

Files in This Item:

There are no files associated with this item.

Request a copy


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science