Pre-main-sequence evolutionThe primary uncertainty that remains concerning the premain sequence (PMS) stage of stellar evolution is the possible role of accretion in the hydrodynamic stage. Possible PMS evolution scenarios are presented with a view to extant or potentially obtainable observational data that may unravel the details of PMS evolution. Attention is given to recent evolution calculations which encompass the role of rotation; it is concluded that the rotational feature of PMS can be tested within the framework of the chemical abundance of trace elements in the solar system, on the sun, and on solar analogs of various ages.
Document ID
19920053583
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Sofia, S. (NASA Headquarters Washington, DC United States)
Kawaler, S. (NASA Headquarters Washington, DC United States)
Larson, R. (NASA Headquarters Washington, DC United States)
Pinsonneault, M. (Yale University New Haven, CT, United States)