Observations of high-velocity molecular gas near Herbig-Haro objects: HH 24--27 and HH 1--2

Journal Article · Sun Aug 15 04:00:00 EDT 1982 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/160203· OSTI ID:7064212

Snell, R L; Edwards, S

High-velocity CO has been detected in the vicinity of the Herbig-Haro objects HH 24--27. These observations indicate that there are two sources of high-velocity outflow; one centered on an infrared source near HH 26, and the second centered roughly 2' south of HH 24. The redshifted and blueshifted wings in both sources are spatially separated suggesting that the high-velocity gas is due to energetic bipolar outflow from young stars embedded in the molecular cloud. The association of Herbig-Haro objects with regions of high-velocity gas suggests a common origin for both in the interaction of a stellar wind with the ambient molecular cloud. The mass loss rates implied by our observations, assuming that the rate of mass loss has been constant throughout the dynamical lifetime of the bipolar lobes, are roughly 10/sup -6/ M/sub sun/ yr/sup -1/ for both sources. We have also searched for high-velocity gas near HH 1--2 but found no evidence for mass outflow in this region.

• Research Organization: Five College Radio Astronomy Observatory, The University of Massachusetts
• OSTI ID: 7064212
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 259:2; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640100* -- Astrophysics & Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COSMIC GASES
ENERGY-LEVEL TRANSITIONS
FLUIDS
GASES
ISOTOPE RATIO
MAIN SEQUENCE STARS
MOLECULES
NEBULAE
OXIDES
OXYGEN COMPOUNDS
SPECTRA
SPECTRAL SHIFT
STARS
STELLAR WINDS