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Mass Limits to Primordial Star Formation from Protostellar Feedback
Jonathan C. Tan, Christopher F. McKee
How massive were the first stars? This question is of fundamental importance for galaxy formation and cosmic reionization. Here we consider how protostellar feedback can limit the…
The X-Ray Scattering Halo Around Nova Cygni 1992: Testing a Model for Interstellar Dust
B. T. Draine, Jonathan C. Tan
We use published ROSAT observations of the X-ray Nova V1974 Cygni 1992 to test a model for interstellar dust, consisting of a mixture of carbonaceous grains and silicate grains. Th…
The Formation of Massive Stars from Turbulent Cores
Christopher F. McKee, Jonathan C. Tan
Observations indicate that massive stars form in regions of very high surface density, ~1 g cm^-2. Clusters containing massive stars and globular clusters have a comparable column…
Theories of Massive Star Formation: Collisions, Accretion and the View from the "I" of Orion
Jonathan C. Tan
I review the arguments motivating models for massive star formation via stellar collisions. I then describe how the standard accretion scenario, involving the collapse of a quasi-h…
The Formation of Massive Stars and Star Clusters
Jonathan C. Tan, Christopher F. McKee
We model the formation of high-mass stars, specifying the accretion rate in terms of the instantaneous and final mass of the star, the ambient pressure of the star-forming region a…
Massive star formation in 100,000 years from turbulent and pressurized molecular clouds
Christopher F. McKee, Jonathan C. Tan
Massive stars (with mass m_* > 8 solar masses) are fundamental to the evolution of galaxies, because they produce heavy elements, inject energy into the interstellar medium, and po…