Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...387l..93y&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 387, March 10, 1992, p. L93-L96. Research supported by MOESC.
Astronomy and Astrophysics
Astronomy
11
Infrared Astronomy, Molecular Gases, Shock Waves, Spectral Emission, Star Formation, Herbig-Haro Objects, Hydrogen, Line Spectra, Quantum Numbers, Telescopes
Scientific paper
Spatially resolved observations of the v = 1-0 S(1) molecular hydrogen emission toward L1551 IRS 5 using the grating spectrometer at KPNO are presented. The S(1) emission consists of a ridge component extending toward west along the optical jet from its peak on IRS 5 and a diffuse component which traces the innermost region of the cavity enclosed by the molecular outflow. The ridge component represents shock-heated molecular gas at the root of the optical jet. The diffuse component is too bright to be of scattered origin; it most likely arises from shock-heated gas within the cavity and could represent an acceleration process of the molecular outflow.
Tamura Motohide
Yamashita Takuya
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