Introduction to the Session `When Do Planets Form?'

Details Introduction to the Session `When Do Planets Form?' Introduction to the Session `When Do Planets Form?'

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...202.2401w&link_type=abstract

American Astronomical Society Meeting 202, #24.01; Bulletin of the American Astronomical Society, Vol. 35, p.729

Astronomy and Astrophysics

Astronomy

Scientific paper

Are planets rare or common? If planets are common, then the timescale for the formation of planets must be less than the timescale for the dispersal of circumstellar disks around young stars. Planetary scientists have worked primarily with two models for planet formation, core accretion theory and gravitational collapse. These two models predict very different timescales for making planets. Meanwhile, astronomers have learned a great deal in recent decades about disks around young stars and about the relationship of disks to the central stars; many of the observational results have led to interpretations concerning the timescale for the evolution and dissipation of circumstellar disks. Are the timescales gleaned from the observational data compatible with theory? Is the data understood well enough to constrain theory? Or are the theories widely enough accepted to constrain interpretations of new observations? In this session, presenters will discuss and debate the information gleaned from theory and the interpretations made from observations. The dialogue in this session on this topic between and among theorists and observers will, we hope, produce a more informed, longer term dialogue on the issues surrounding planet formation.

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