Aperture synthesis observations of CO emission from the W3 molecular cloud core

Journal Article · Mon Oct 15 04:00:00 EDT 1984 · Astrophys. J., Lett. Ed.; (United States)

DOI:https://doi.org/10.1086/184370· OSTI ID:6048681

Claussen, M J; Berge, G L; Heiligman, G M; Leighton, R B; Lo, K Y; Masson, C R; Moffet, A T; Phillips, T G; Sargent, A I; Scott, S L; Wannier, P G; Woody, D P

We present the first aperture synthesis maps of /sup 12/CO (J = 1-0) emission from a galactic star-forming region. We have mapped the line and continuum emission from a 1' field centered on W3 IRS5 with the Owens Valley millimeter-wave interferometer. Although we did not detect any radio continuum emission from IRS5 to a 5 sigma limit of 130 mJy, we have found, associated with IRS5, compact (approx. 8'') sourcces of high velocity red- and blueshifted CO emission with T/sub B/roughly-equal20 K. The estimated mass in each wing is 1 M/sub sun/, with density roughly-equal10/sup 5/ cm/sup -3/. The outflow is similar to other known sources with high-velocity emission and has a short dynamic lifetime such as found in Orion. We suggest that the two infrared sources which comprise IRS5 are in differing stages of evolution.

• Research Organization: Owens Valley Radio Observatory, California Institute of Technology
• OSTI ID: 6048681
• Journal Information: Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 285:2; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
EMISSION
ENERGY-LEVEL TRANSITIONS
INTERFEROMETRY
INTERSTELLAR GRAINS
MAPS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
STAR ACCRETION
STAR EVOLUTION