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 (440) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (64)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
H I shells and supershells
Authors:
Heiles, C.
Affiliation:
AA(California, University, Berkeley, Calif.)
Publication:
Astrophysical Journal, Part 1, vol. 229, Apr. 15, 1979, p. 533-537, 539-544. NSF-supported research. (ApJ Homepage)
Publication Date:
04/1979
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Centimeter Waves, Hydrogen Clouds, Interstellar Matter, Radio Sources (Astronomy), Angular Resolution, Astronomical Photography, Supernova Remnants
DOI:
10.1086/156986
Bibliographic Code:
1979ApJ...229..533H

Abstract

Photographic representations of H I antenna temperatures in narrow velocity intervals vs galactic longitude and latitude are presented for velocities of -143 to +141 km/s, longitudes of 10 to 250 deg, and latitudes of -10 to +10 deg. A multitude of structure, much of which is filamentary, is observed in the photographs. Forty-six stationary H I shells and 17 expanding H I shells are identified, and properties of these shells are tabulated. Distances to the shells and the velocity dispersion are estimated, along with the hydrogen content of the H I shells and the energies of the expanding shells. The results are compared with previous studies, the numbers and production rates of H I shells are considered, and explanations are offered for the observed shapes of the shells. Eleven 'supershells' are identified, and possible production agents for these shells are examined.

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