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Radiation Pressure in Massive Star Formation
Mark R. Krumholz, Richard I. Klein, Christopher F. McKee
Stars with masses of >~ 20 solar masses have short Kelvin times that enable them to reach the main sequence while still accreting from their natal clouds. The resulting nuclear bur…
Stars Form By Gravitational Collapse, Not Competitive Accretion
Mark R. Krumholz, Christopher F. McKee, Richard I. Klein
There are now two dominant models of how stars form: gravitational collapse theory holds that star-forming molecular clumps, typically hundreds to thousands of solar masses in mass…
Spectroscopic abundance analysis of dwarfs in young open cluster IC 4665
Z. -X. Shen, B. Jones, D. N. C. Lin +2
We report a detailed spectroscopic abundance analysis for a sample of 18 F-K dwarfs of the young open cluster IC 4665. Stellar parameters and element abundances of Li, O, Mg, Si, C…
A Planetary System with an Escaping Mars
Áron Süli, Rudolf Dvorak
The chaotic behaviour of the motion of the planets in our Solar System is well established. In this work to model a hypothetical extrasolar planetary system our Solar System was mo…
Effects of mass loss for highly-irradiated giant planets
W. B. Hubbard, M. F. Hattori, A. Burrows +2
We present calculations for the evolution and surviving mass of highly-irradiated extrasolar giant planets (EGPs) at orbital semimajor axes ranging from 0.023 to 0.057 AU using a g…
Core Overshoot: An Improved Treatment and Constraints from Seismic Data
Christian W. Straka, Pierre Demarque, D. B. Guenther
We present a comprehensive set of stellar evolution models for Procyon A in an effort to guide future measurements of both traditional stellar parameters and seismic frequencies to…