Planet Formation by Concurrent Collapse

Details Planet Formation by Concurrent Collapse Planet Formation by Concurrent Collapse

2008-02-27

arxiv.org/abs/0802.4099v2

Astronomy and Astrophysics

Astrophysics

16 pages, no figures, extended and refined version of earlier submission

Scientific paper

After reviewing the difficulties faced by the conventional theory of planet formation (based upon the aggregation of microscopic dust particles), we describe an alternative hypothesis. We propose that planets form by gravitational collapse at the same time as the star about which they orbit. This 'concurrent collapse' hypothesis avoids theoretical difficulties associated with the conventional model and suggests satisfying explanations for various poorly understood phenomena. We introduce new explanations for FU Orionis outbursts seen in young stars, the discovery of exoplanets with eccentric orbits and the existence of small rocky objects such as chondrules in the solar system.

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