Velocity structure of the Orion-IRc2 SiO maser - Evidence for an 80 AU diameter circumstellar disk

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/185632· OSTI ID:6956014

Plambeck, R L; Wright, M C.H.; Carlstrom, J E ^[1]

---

1. California Univ., Berkeley (USA)

The relative positions of the 86 GHz SiO maser features toward Orion-IRc2 were measured with an accuracy of + or - 0.015 arcsec using the Hat Creek millimeter array. Maser emission appears to originate from an 0.15 arcsec diameter ring. A simple model of maser emission from an expanding, rotating disk is able to reproduce the observed velocity structure of the ring. 16 refs.

• OSTI ID: 6956014
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 348; 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
AMPLIFIERS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EQUIPMENT
INFRARED RADIATION
INTERSTELLAR SPACE
MASERS
MASS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
MOTION
NEBULAE
PROTOSTARS
RADIATIONS
SILICON COMPOUNDS
SPACE
STAR EVOLUTION
VELOCITY