Title: Variability of the post-agb star hr-4049 - dust obscuration in a binary-system
Authors: Waelkens, Christoffel
Lamers, Hjglm
Waters, L
Rufener, F
Trams, Nr
Lebertre, T
Ferlet, R
Vidalmadjar, A
Issue Date: Feb-1991
Publisher: Springer verlag
Series Title: Astronomy and astrophysics vol:242 issue:2 pages:433-442
Abstract: The variability of the peculiar post-AGB star HR 4049 is investigated. The data are 250 photometric observations in the Geneva system, most of which were taken during seven subsequent seasons, near-infrared photometry taken during one season, a few IUE spectra, and some spectroscopic data that are randomly distributed in time. The optical photometry reveals a period of 434 days; the amplitude is inversely proportional to the wavelength. The 434-day period is also distinctly present in the 20 radial velocities we recorded for the star.
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Institute of Astronomy

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