Direct Imaging Discovery of a `Super-Jupiter' Around a Late B-Type Star
Abstract
We present the direct imaging discovery of an extrasolar planet, or possible low-mass brown dwarf, at a projected separation of 55 AU from a late B-type star. The planet was detected with Subaru/HiCIAO during the SEEDS survey, and confirmed as a bound companion via common proper motion measurements. Observed near-infrared magnitudes at J, H, K, and L indicate a temperature ~1700 K and a model dependent mass ~13.0 Jupiter masses. The host star's estimated mass of 2.4-2.5 solar masses places it among the most massive stars ever known to harbor an extrasolar planet or low mass brown dwarf. While the mass of the companion is close to the deuterium burning limit, its mass ratio to the star is only ∼0.5%, implying that it may be best defined as a ‘Super-Jupiter’ with properties similar to other recently discovered companions to massive stars, from direct imaging and radial velocity surveys.
- Publication:
-
American Astronomical Society Meeting Abstracts #221
- Pub Date:
- January 2013
- Bibcode:
- 2013AAS...22132406C