Detection of rotationally excited OH emission toward the probable young planetary nebula Vy 2-2

Journal Article · Thu Aug 01 04:00:00 EDT 1985 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/163364· OSTI ID:5797570

Jewell, P R; Schenewerk, M S; Snyder, L E

Previous searches for rotationally excited OH have been mostly negative. However, the general situation with respect to such searches has now changed as a result of significant improvements in receiver sensitivity and the identification of new candidate objects including OH/IR stars and compact planetary nebulae. For this reason, a new investigation has been conducted. The investigation involved extensive searches for circumstellar rotationally excited OH emission in transitions near 6.0 GHz and near 4.7 GHz. A primary result of the conducted searches was the detection of the 6035 MHz OH line toward the compact nebula Vyssotsky 2-2. It appears that this source is a member of the emerging class of evolved stellar objects in transition from red giant to planetary nebula. Conclusions regarding rotationally excited OH in circumstellar envelopes are discussed. For cool objects, such as OH/Miras and OH/IR stars, the lack of rotationally excited OH emission results primarily from the small population in those levels. 49 references.

• Research Organization: Illinois Univ., Urbana
• OSTI ID: 5797570
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 295; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
CHEMICAL COMPOSITION
ELECTRONIC EQUIPMENT
EQUIPMENT
HYDROGEN COMPOUNDS
HYDROXIDES
INTERSTELLAR SPACE
MASERS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
MOLECULES
MOTION
NEBULAE
OXYGEN COMPOUNDS
PLANETARY NEBULAE
ROTATION
SPACE
STAR EVOLUTION
STARS