Survey of high-velocity molecular gas in the vicinity of Herbig-Haro objects. I

Journal Article · Fri Jul 15 04:00:00 EDT 1983 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/161152· OSTI ID:5599854

Edwards, S; Snell, R L

A survey of high-velocity molecular gas toward 49 Herbig-Haro objects is presented. Observations of the /sup 12/CO J = 1-0 transition obtained with the 14 m telescope of the Five College Radio Astronomy Observatory reveal three new spatially extended high-velocity molecular outflows. One is in the NGC 1333 region near HH 12, and two are in the NGC 7129 region, the first near LkH..cap alpha.. 234 and the second near a far-infrared source. The relationship between optical Herbin-Haro emission knots and large-scale motions of the ambient molecular material is investigated, and the properties of high-velocity molecular outflows in the vicinity of Herbig-Haro objects are discussed. Of 11 energetic outflows in the vicinity of Herbig-Haro objects, eight are found in four pairs separated by 0.2-1.0 pc. We estimate that energetic outflows characterized by mass loss rates > or =10/sup -7/ M/sub sun/ yr/sup -1/ occur for at least 10/sup 4/ yr once in the lifetime of all stars with masses greater than 1M/sub sun/.

• Research Organization: Five College Astronomy Department, Smith College
• OSTI ID: 5599854
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 270:2; ISSN ASJOA
• 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
COSMIC GASES
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
FLUIDS
GASES
MAPS
NEBULAE
OXIDES
OXYGEN COMPOUNDS
RADIAL VELOCITY
SPECTRA
STARS
STELLAR WINDS
VELOCITY