Near-IR coronagraphic imaging of the companion to HR 7672
Abstract
This article presents coronagraphic images of the low-mass companion to the star HR 7672 observed at the Palomar 200 inch telescope and first detected at Gemini and Keck in the K band by \citet{liu02}. We obtained additional photometry in J(1.2 mu m), H(1.6 mu m) and Ks(2.2 mu m) bands to cover the full near-IR domain and hence to further constrain the nature of the companion. A mass estimate of 58-71 MJ is derived from evolutionary models of very low-mass objects.
Based on data collected at the Palomar 200-inch.- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 2003
- DOI:
- 10.1051/0004-6361:20031216
- arXiv:
- arXiv:astro-ph/0308426
- Bibcode:
- 2003A&A...410..283B
- Keywords:
-
- stars: individual: HR7672;
- stars: low-mass;
- brown dwarfs;
- instrumentation: adaptive optics;
- techniques: high angular resolution;
- techniques: image processing;
- Astrophysics
- E-Print:
- 6 pages, 9 figures, to be published in Astronomy and Astrophysics