Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012apj...744..138b&link_type=abstract
The Astrophysical Journal, Volume 744, Issue 2, article id. 138 (2012).
Astronomy and Astrophysics
Astronomy
Planetary Systems, Stars: Individual: Hd 22049, Techniques: High Angular Resolution, Techniques: Interferometric
Scientific paper
We measured the angular diameter of the exoplanet host star epsilon Eridani using the Navy Optical Interferometer. We determined its physical radius, effective temperature, and mass by combining our measurement with the star's parallax, photometry from the literature, and the Yonsei-Yale isochrones, respectively. We used the resulting stellar mass of 0.82 ± 0.05 M &sun; plus the mass function from Benedict et al. to calculate the planet's mass, which is 1.53 ± 0.22 M Jupiter. Using our new effective temperature, we also estimated the extent of the habitable zone for the system.
Armstrong Thomas J.
Baines Ellyn K.
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