High-velocity OH near young stellar objects - L1551

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

DOI:https://doi.org/10.1086/184505· OSTI ID:5800358

Mirabel, I F; Rodriguez, L F; Canto, J; Arnal, E M

The detection of OH absorption at high velocities in the bipolar outflow associated with the star formation region L1551 is reported. The OH absorption shows the same anisotropic angular distribution as the redshifted and blueshifted CO emission. The OH transitions are markedly subthermal (Tex not greater than 3.8 K), since the radiation that is being absorbed is a background continuum constituted by the cosmic component plus a small Galactic contribution. The absorbing OH appears to trace the part of the bipolar outflow with the highest velocity and lowest density. 12 references.

• Research Organization: Puerto Rico Univ., San Juan; Universidad Nacional Autonoma de Mexico Mexico City; Instituto Argentino de Radioastronomia, Villa Elisa; Observatorio Astronomico, La Plata, Argentina
• OSTI ID: 5800358
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 294; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
COSMIC GASES
ELECTROMAGNETIC RADIATION
FLUIDS
GASES
HYDROXYL RADICALS
NEBULAE
PROTOSTARS
RADIATIONS
RADICALS
RADIOWAVE RADIATION
SPECTRA
STAR EVOLUTION