Observations of various methanol maser transitions toward the NGC 6334 region

Journal Article · Thu Jun 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167542· OSTI ID:5642785

Menten, K M; Batrla, W ^[1]

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1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA)

A number of CH3OH lines toward the H-II region F in the NGC 6334 star-forming region have been observed in April 1987 with the 140-foot Green Bank telescope. Strong maser emission is found in the 2(1) to 3(0)E transition at 19.9 GHz and in the 9(2) to 10(1)A(+) transition at 23.1 GHz. The results suggest that the 12.1, 19.9, and 23.1 GHz methanol masers may be closely associated with compact H-II regions and OH masers, and that the 25 GHz masers may be associated with dense condensations in an earlier evolutionary state. 26 refs.

• OSTI ID: 5642785
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 341; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALCOHOLS
AMPLIFIERS
CONDENSATES
COSMIC RADIO SOURCES
ELECTRONIC EQUIPMENT
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
H2 REGIONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INTERSTELLAR SPACE
MASERS
METHANOL
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
MOLECULES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SPACE
WATER