AAS 207th Meeting, 8-12 January 2006
Session 97 From Hot Jupiters to Hot Earths
Special Session, Tuesday, 2:00-3:30pm, January 10, 2006, Virginia

Previous   |   Session 97   |   Next  |   Author Index   |   Block Schedule

[97.03] N2K: A Targeted Search for Hot Jupiters

D. A. Fischer (San Francisco State University), G. W. Marcy (U.C. Berkeley), R. P. Butler (Carnegie Institution), S. S. Vogt (U. C. Santa Cruz)

The N2K consortium is carrying out a distributed observing campaign to detect short-period planets using the Keck, Magellan and Subaru telescopes, as well as the automatic photometric telescopes at Fairborn Observatory. We have established a reservoir of more than 14,000 main sequence and subgiant stars, closer than 110 pc, brighter than V=10.5 and with 0.4 < B-V < 1.2. Because the fraction of stars with planets is a sensitive function of stellar metallicity, we are selecting a subset of about 2000 high metallicity stars for this program.

Four short-period planets have been detected in the past year: HD 88133b, HD 149143b, HD 109749b and HD 149026b. Among these new exoplanets, HD 149026b is a transiting planet with a small radius and saturnlike mass. Because the photometric transit depth for this planet was only 3 millimags, models imply a surprising 70 M \earth mass heavy element core. The host star is a bright (V = 8.15) G0IV star, enabling extensive follow-up observations with the Hubble Space Telescope and the Spitzer Space Telescope.

Fischer acknowledges support from NASA grant NNG05G164G.

If you would like more information about this abstract, please follow the link to http://www.physics.sfsu.edu/~fischer. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

Previous   |   Session 97   |   Next

Bulletin of the American Astronomical Society, 37 #4
© 2005. The American Astronomical Soceity.