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Record 1 of 23283
Gas in Debris Disks: Clues to the Late Stages of Planet Formation
Author and Affiliation:
Roberg, A.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Abstract: The basic character of debris disks was established soon after their discovery in the mid-80's. These disks around nearby main sequence stars are composed of material produced by collisions and/or evaporation of extrasolar asteroids and comets. Debris disks appear to be largely composed of dust, though little is known about its typical composition. Nonetheless, at least some debris disks have detectable gas, which has very different characteristics from the gas in younger protoplanetary disks. The gas component has resisted observation, but appears to hold important clues to the composition of extrasolar planetesimals during the late-stages of planetary system formation and the formation of terrestrial planet atmospheres. In this talk, I will explain our current understanding of the place of debris disks in the planet formation process and describe what is known about the gas component. Finally, I will outline upcoming opportunities for sensitive new studies of gas in debris disks.
Publication Date: Jul 21, 2008
Document ID:
20080037793
(Acquired Sep 26, 2008)
Subject Category: ASTROPHYSICS
Document Type: Conference Paper
Meeting Information: CoolStars 15 Conference; 21-25 Jul. 2008; Saint Andrews, Scotland; United Kingdom
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: DEBRIS; PLANETARY EVOLUTION; COSMIC GASES; PROTOPLANETS; COSMOLOGY; PLANETARY ATMOSPHERES; PLANETARY COMPOSITION
Availability Source: Other Sources
Availability Notes: Abstract Only
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