Stabilization of the disk around [beta] Pictoris by extremely carbon-rich gas
Article Abstract:
The detection of singly and doubly ionized carbon and neutral atomic oxygen gas in the [beta] Pictoris disk is reported. Since carbon is extremely overabundant, it should keep the gas disk in the keplerian rotation, indicating that the gas is produced from material more carbon-rich than expected of Solar System analogues.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
User Contributions:
Comment about this article or add new information about this topic:
Extreme collisions between planetesimals as the origin of warm dust around a Sun-like star
Article Abstract:
An exceptionally large amount of warm, small, and silicate dust particles around the solar-type star BD+ 20 307 is reported. The composition and quantity of dust could be explained by recent frequent or huge collisions between asteroids or other 'planetesimals' whose orbits are being perturbed by a near by planet.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
Construction-site inspection
Article Abstract:
The challenges faced by astronomers while building a planetary system are discussed. The detailed structure and composition of the flattened structures of gas and dust around the stars can be determined once they have been discovered from their heat radiation.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Stabilization of microtubule dynamics at anaphase onset promotes chromosome segregation. Separase-mediated cleavage of cohesin at interphase is required for DNA repair
- Abstracts: Contextual variation in chimpanzee pant hoots and its implications for referential communication. Meat sharing among the Gombe chimpanzees: harassment and reciprocal exchange
- Abstracts: Seeking planets around nearby stars. Remote climes. A theoretical look at the direct detection of giant planets outside the solar system
- Abstracts: CDK-dependent phosphorylation of BRCA2 as a regulatory mechanism for recombinational repair
- Abstracts: Experimental investigation of geologically produced antineutrinos with KamLAND. Dissociative hydrogen adsorption on palladium requires aggregates of three or more vacancies