High-velocity OH near young stellar objects: L1551

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

DOI:https://doi.org/10.1086/184505· OSTI ID:5562696

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

We report the detection of OH absorption at high velocitis in the bipolar outflow associated with the star formation region L1551. The OH absorption shows that same anisotropic angular distribution as the redshifted and blueshifted CO emission. The OH transitions are markedly subthermal (T/sub ex/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.

• Research Organization: Department of Physics, University of Puerto Rico
• OSTI ID: 5562696
• Journal Information: Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 294:1; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COSMIC GASES
COSMIC RADIO SOURCES
FLUID FLOW
FLUIDS
GAS FLOW
GASES
HYDROXYL RADICALS
INTERSTELLAR SPACE
NEBULAE
OXIDES
OXYGEN COMPOUNDS
RADICALS
SPACE
SPECTRA
STAR EVOLUTION
TEMPERATURE MEASUREMENT
VELOCITY