Binary Star Orbits From Speckle Interferometry. VII. The Multiple System XI Ursae Majoris
Abstract
Xi Ursae Majoris (HR 4374/5) consists of a visual binary having a period of nearly 60 yr, the primary component of which is a 669 day astrometric and spectroscopic subsystem, and the secondary is a 4 day spectroscopic binary. We report here improved elements for the long-period visual system (AB) and the short-period astrometric system (Aa). We also report the first direct detection of a fifth component to the multiple system (Bc) from speckle observations obtained in 1988 at the Canada-France-Hawaii Telescope.
- Publication:
-
The Astronomical Journal
- Pub Date:
- January 1995
- DOI:
- 10.1086/117277
- Bibcode:
- 1995AJ....109..332M
- Keywords:
-
- Binary Stars;
- Orbital Elements;
- Speckle Interferometry;
- Astronomical Spectroscopy;
- Stellar Systems;
- Astronomy;
- STARS: INDIVIDUAL: XI URSAE MAJORIS;
- BINARIES: VISUAL