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 (74) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Encounters between stars and dense interstellar clouds
Authors:
Talbot, R. J., Jr.; Newman, M. J.
Affiliation:
AA(Rice University, Houston, Tex.), AB(California Institute of Technology, Pasadena, Calif.)
Publication:
Astrophysical Journal Supplement Series, vol. 34, July 1977, p. 295-308. (ApJS Homepage)
Publication Date:
07/1977
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Astrodynamics, Interstellar Matter, Probability Theory, Stellar Mass Accretion, Stellar Motions, Abundance, Astronomical Models, Cosmic Dust, Cosmology, Dwarf Stars, Encounters, F Stars, G Stars, Life (Durability), Solar Wind, Stellar Evolution
DOI:
10.1086/190452
Bibliographic Code:
1977ApJS...34..295T

Abstract

The probability of stellar encounters with various types of interstellar clouds is evaluated along with the range of cloud parameters within which accretion of interstellar matter by stars can be expected. Some statistical properties of interstellar clouds are analyzed, mass accretion by stars is examined, and the amount of material accreted by a solarlike star during its lifetime is estimated. Astrophysical consequences of encounters with interstellar clouds and accretion of interstellar material are discussed for the solar system, surface abundances of stars, the problem of missing metal-poor F and G dwarfs, and other surface-abundance effects in disk and halo stars. Results are obtained which indicate that: (1) disk stars with ages that are an appreciable fraction of the Galaxy's age have encountered a significant number of interstellar clouds during their lifetimes; (2) the solar system has had about 135 encounters with clouds having a density of at least 100 per cu cm; (3) the amount of material added to the solar surface by accretion during the sun's lifetime is probably 0.0002 solar mass; and (4) the probability is about 5% that the sun has accreted 0.01 solar mass.

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)

  New!

Find Similar Abstracts:

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