Stellar evolution from the zero-age main sequence

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

231

Late Stars, Main Sequence Stars, Red Giant Stars, Stellar Evolution, Stellar Models, Abundance, Astronomical Catalogs, Graphs (Charts), Helium, Stellar Luminosity, Stellar Mass, Stellar Structure

Scientific paper

A consistent set of 247 evolutionary sequences extending from the ZAMS to the red-giant branch is presented for Y from 0.10 to 0.40, Z from 0.00001 to 0.10, and masses of 0.55 to 6.90 solar masses. Each sequence is started from a homogeneous ZAMS model, and almost all are evolved to the base of the red-giant branch. It is shown that: (1) the relative position of the main sequence can be determined as a function of composition; (2) theoretical luminosity functions can be derived from the relative evolutionary time scales; (3) a dip in luminosity sometimes occurs at the base of the red-giant branch and is most pronounced at larger Z values; (4) metal-poor stars evolve farther up along the main sequence before turning off toward the red-giant branch; and (5) the onset of helium burning halts the evolution across the Hertzsprung gap for the most massive and most metal-poor models, so that the star remains blue during its phase of core-helium burning.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Stellar evolution from the zero-age main sequence does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Stellar evolution from the zero-age main sequence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stellar evolution from the zero-age main sequence will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1483871

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.