FEPS (Formation and Evolution of Planetary Systems) Update

Details FEPS (Formation and Evolution of Planetary Systems) Update FEPS (Formation and Evolution of Planetary Systems) Update

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.9503b&link_type=abstract

American Astronomical Society Meeting 207, #95.03; Bulletin of the American Astronomical Society, Vol. 37, p.1323

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The ``Formation and Evolution of Planetary Systems" (FEPS) team has observed 330 nearby solar-type stars ranging in age from 3 Myr to 3 Gyr, using all 3 Spitzer instruments to study the evolution of circumstellar dust and gas. Recent FEPS results will be reviewed in brief, including: 1) over-all detection statistics compared with solar system evolutionary models and also with results from other Spitzer teams, 2) discovery of a 30 Myr old G star with substantial dust mass at ``asteroidal" temperatures but no detectable material at ``Kuiper Belt" temperatures, 3) very low limits on gas mass around another particularly dusty 30 Myr-old G star, 4) constraints on dissipation of primordial disks in terrestrial planet zones around stars younger than 30 Myr, and 5) detections and limits on planetary debris around 100 Myr-old solar-type Pleiades members. The Spitzer Legacy program is funded by NASA.

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