Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (236) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
· Translate This Page
Stellar evolution from the zero-age main sequence
Mengel, J. G.; Sweigart, A. V.; Demarque, P.; Gross, P. G.
AA(Yale University Observatory, New Haven Conn.), AB(Yale University Observatory, New Haven Conn.), AC(NASA, Goddard Space Flight Center, Greenbelt, Md; Yale University Observatory, New Haven, Conn.), AD(Warner and Swasey Observatory, East Cleveland, Ohio)
Astrophysical Journal Supplement Series, vol. 40, Aug. 1979, p. 733-791. (ApJS Homepage)
Publication Date:
NASA/STI Keywords:
Late Stars, Main Sequence Stars, Red Giant Stars, Stellar Evolution, Stellar Models, Abundance, Astronomical Catalogs, Graphs (Charts), Helium, Stellar Luminosity, Stellar Mass, Stellar Structure
Bibliographic Code:


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.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences

More Article Retrieval Options

HELP for Article Retrieval

Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

Find Similar Abstracts:

Use: Authors
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
arXiv e-prints