Presentation 1 : Poster
The HD 61273 affair : inquiry on a new Algol (Atelier PNPS)
F. Royer, P. North and D. Briot
Although it is a relatively bright star - 7th magnitude - the star HD
61273, classified as B9 in the HD catalogue, is very scarce in the
literature. Periodic photometric variations are detected by Hipparcos,
and radial velocity measurements carried out with the Elodie
spectrometer correspond to a binary star. A set of 13 spectra, obtained
over the last six years, demonstrates the binarity of this star. The H
alpha line displays a variable emission. This binary system, of Algol
type, with a 12.919 day period, is composed of a B9 dwarf and a K0
giant.