Direct imaging of the young spectroscopic binary HD 160934

Details Direct imaging of the young spectroscopic binary HD 160934 Direct imaging of the young spectroscopic binary HD 160934

2006-12-06

arxiv.org/abs/astro-ph/0612158v1

Astronomy and Astrophysics

Astrophysics

5 pages, 1 figure, submitted to A&A

Scientific paper

We report on the direct detection of a close companion to HD 160934, a young active star, SB1 spectroscopic binary, and suggested member of the AB Doradus moving group. High angular resolution at the Calar Alto 2.2m telescope was achieved by means of the Lucky Imaging technique, allowing direct imaging close to the diffraction limit in the SDSS z' band. Our results are combined with pre-discovery HST archive data, own UBVRI broadband photometry, published JHK magnitudes, and available radial velocity measurements to constrain the physical properties of the HD 160934 close binary. We suggest that the direct detection may be identical to the spectroscopically discovered companion.

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