Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1622v&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1622
Astronomy and Astrophysics
Astrophysics
Scientific paper
Planetary characterization is playing an increasingly important role in exoplanet research. A frequently overlooked aspect in the calculation of physical quantities of these planets is that they are actually functions of astrophysical parameters of the host stars, such as stellar luminosity or diameter. The value of "understanding the parent stars" cannot be overstated in the realm of assessing the radii of transiting planets, the potential of harboring liquid water on exoplanets (habitable zone), the planetary equilibrium temperatures, etc. We use long-baseline interferometry to provide directly determined stellar astrophysical parameters of exoplanet host stars with the aim of characterizing their planet population. In this presentation, we show the results of our studies of the multiplanet systems GJ 581, GJ 876, and 55 Cancri with planets in or near the respective habitable zones, and of GJ 436 with a transiting hot Neptune.
Boyajian Tabetha S.
Ciardi David R.
Farrington Chris
Goldfinger P. J.
Henry Todd J.
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