Title: Spectral variability of the binary HR 4049
Authors: Bakker, EJ
Lambert, DL
Van Winckel, Hans
McCarthy, JK
Waelkens, Christoffel
Gonzalez, G
Issue Date: Aug-1998
Publisher: Springer verlag
Series Title: Astronomy and astrophysics vol:336 issue:1 pages:263-275
Abstract: The C I, Na I D, and H alpha lines of the post-AGE binary HR 4049 have been studied. Na I D variability results from a photospheric absorption component ([Na/H]=-1.6 +/- 0.2) which follows the velocity of the primary and a stationary, non-photospheric component. An emission component is attributed to the circumbinary disc, and an absorption component to mass-loss from the system with a velocity of 5.3 +/- 0.5 km s(-1).
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Institute of Astronomy

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