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 (2613) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (1)
· Also-Read Articles (Reads History)
· HEP/Spires Information
·
· Translate This Page
Title:
The size distribution of interstellar grains
Authors:
Mathis, J. S.; Rumpl, W.; Nordsieck, K. H.
Affiliation:
AA(Washburn Observatory, Madison, Wis.), AB(Washburn Observatory, Madison, Wis.), AC(Washburn Observatory, Madison, Wis.)
Publication:
Astrophysical Journal, Part 1, vol. 217, Oct. 15, 1977, p. 425-433. NSF-supported research. (ApJ Homepage)
Publication Date:
10/1977
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Cosmic Dust, Interstellar Extinction, Interstellar Matter, Particle Size Distribution, Enstatite, Graphite, Magnetite, Olivine, Polarization Characteristics, Ultraviolet Astronomy
DOI:
10.1086/155591
Bibliographic Code:
1977ApJ...217..425M

Abstract

An attempt is made to fit observational data on interstellar extinction over the wavelength range from 0.11 to 1 micron to particle-size distributions of different materials in such a way that the strength and width of the 2160-A extinction bump are very well reproduced. It is found that various mixtures consisting of graphite, silicon carbide, enstatite, olivine, iron, and magnetite are acceptable, that all the acceptable mixtures contain spherical uncoated graphite particles, and that graphite is the main contributor to the 2160-A feature. The required particle-size distribution is shown to be quite broad, with approximately a power-law distribution, for all substances considered. The sizes for graphite are estimated to vary from about 0.005 to about 1 micron, and the observed uniformity of extinction over the sky is explained in terms of a rather uniform power-law exponent, which could have resulted from a stochastic process in grain formation

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