Neutral hydrogen near galactic radio sources: the Orion Nebula

Journal Article · Thu Nov 01 04:00:00 EST 1979 · Sov. Astron. AJ (Engl. Transl.); (United States)

OSTI ID:5387414

Alferova, Z A; Venger, A P; Gosachinskii, I V; Grachev, V G; Egorova, T M; Zhelenkov, S R; Korol'kov, D V; Mogileva, V G; Pariiskii, Y N; Prozorov, V A; Ryzhkov, N F; Shivris, O N

Observations are reported of the 21-cm line in absorption and the distribution of 21-cm emission features in the neighborhood of the Orion Nebula, as recorded at 2' x 20' angular resolution with the RATAN-600 radio telescope. The characteristics of the optical-depth distribution for H/sup 1/ in absorption and the configuration of emission-line features suggest that the nebula is surrounded by a rotating, expanding envelope of H/sup 1/ gas with a mass of order 100 M/sub sun/, presumably formed as an artifact of the motion of the H/sup 11/ region through the neutral interstellar gas at a velocity of approx. =10 km/sec.

• Research Organization: Special Astrophysical Observatory, USSR Academy of Sciences, Nizhnii Arkhyz
• OSTI ID: 5387414
• Journal Information: Sov. Astron. AJ (Engl. Transl.); (United States), Journal Name: Sov. Astron. AJ (Engl. Transl.); (United States) Vol. 23:6; ISSN SAAJA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
COSMIC RADIO SOURCES
CRYOGENIC FLUIDS
DIAGRAMS
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION SPECTRA
FLUIDS
GALAXIES
H1 REGIONS
H2 REGIONS
HYDROGEN
INTERSTELLAR GRAINS
INTERSTELLAR SPACE
MASS
MILKY WAY
NEBULAE
NONMETALS
OPTICAL DEPTH CURVE
PARTICLES
RADIATIONS
RADIOWAVE RADIATION
SPACE
SPECTRA