NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Galactic worms. I - Catalog of worm candidatesA catalog of candidates for the Galactic worms that are possibly the walls surrounding the superbubbles is compiled; 118 isolated structures that appear both in H I and in IR (60 and 100 microns). Fifty-two are possibly associated with H II regions. It is found that the 100-micron emissivity increases systematically toward the Galactic interior, which is consistent with the increase of the general interstellar radiation field. The 100-micron emissivity of the structures associated with the H II regions is larger than that of the structures without associated H II regions. The 60-100-micron ratio is large, 0.28 +/- 0.03, which may indicate that the grains associated with the atomic gas have a relatively large population of small grains. Thirty-five structures appear in the 408-MHz continuum. The IR and the radio continuum properties suggest that the 408-MHz continuum emission in those structures is very likely thermal. The implications of these results on the ionization of gas far from the Galactic plane are discussed.
Document ID
19920052763
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Koo, Bon-Chul
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Heiles, Carl
(California, University Berkeley, United States)
Reach, William T.
(NASA Goddard Space Flight Center Greenbelt, MD; California, University, Berkeley, United States)
Date Acquired
August 15, 2013
Publication Date
May 1, 1992
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 390
Issue: 1 Ma
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
92A35387
Funding Number(s)
CONTRACT_GRANT: NSF AST-88-18544
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available