Cold H I clouds near the supernova remnant W44

Journal Article · Sat Feb 01 04:00:00 EST 1986 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114017· OSTI ID:5486448

Sato, F

The cold H I clouds near the supernova remnant W44 are investigated by the use of the Maryland-Green Bank Survey (Westerhout 1973). Several clouds with a mean diameter of about 20 pc are distributed in the region. They do not seem to make a shell around W44, contrary to the suggestion by Knapp and Kerr (1974) based on the low-resolution data at coarse grids. Some of them form a chain, about 100 pc in length, extending approximately along the galactic equator. It resembles the cold H I cloud near W3 and W4. The major constituent of the clouds is probably the hydrogen molecule, and the total mass of the entire complex amounts to 25,000 81,000 solar masses. The estimated Jeans mass indicates that they will contract to dense molecular clouds. Therefore, it may safely be concluded that the cold H1 cloud complex near W44 is a giant molecular cloud at an early evolutionary stage. 14 references.

• Research Organization: Hyogo Univ. of Teacher Education, Japan
• OSTI ID: 5486448
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 91; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
COSMIC GASES
COSMIC RADIO SOURCES
DATA
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GASES
HYDROGEN
INFORMATION
MASS
NONMETALS
NUMERICAL DATA
SPECTRA
SUPERNOVA REMNANTS