Aims.Sudden brightenings of HD 96273 or BD+07 2411B were observed with the HIPPARCOS satellite in 1992, which still require a convincing explanation.
Methods: .A new analysis of all known data of these two stars is given, including additional information on the Balmer line equivalent widths.
Results: .The brightenings can be explained as SU UMa type dwarf nova outbursts, superimposed on the combined light of two normal F and G type main sequence stars. Since the hypothetical dwarf nova turns out to be located at the same distance as HD 96273 and BD+07 2411B, we possibly see here the first case of a cataclysmic variable as a member of a multiple star system. Questions on history and evolution, as well as possible ways to confirm this interpretation, are briefly outlined.
Astronomy and Astrophysics
- Pub Date:
- June 2006
- stars: novae;
- cataclysmic variables;
- stars: dwarf novae;
- stars: individual: HD 96273;
- stars: individual: BD+07 2411B;
- stars: individual: FH Leo;
- 3 pages, accepted for publication in Astronomy &