High-excitation SiO masers in evolved stars

Journal Article · Tue Dec 01 04:00:00 EST 1987 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/165868· OSTI ID:5293872

Jewell, P R; Dickinson, D F; Snyder, L E; Clemens, D P

The presently reported detection of SiO maser lines from highly excited rotational states in R Leo constitutes the highest rotational transition detected to date. The detection of v = 1, J = 6-5 transition emission may be sensitivity-limited, although the photon flux in this transition is significantly diminished relative to the power energy transitions. While emission from the v = 2 and v = 3 states is rare in the high rotational transitions, SiO maser emission is mostly confined to states with v no higher than 3 and J no higher than 6. 17 references.

• Research Organization: National Radio Astronomy Observatory, Tucson, AZ (USA); Lockheed Research Laboratories, Palo Alto, CA (USA); Illinois Univ., Urbana (USA); Steward Observatory, Tucson, AZ (USA)
• OSTI ID: 5293872
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 323; ISSN ASJOA
• 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
AMPLIFIERS
CHALCOGENIDES
ELECTRONIC EQUIPMENT
EMISSION SPECTRA
EQUIPMENT
INTERSTELLAR SPACE
MASERS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
SPACE
SPECTRA
STAR EVOLUTION
STARS