Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasj...42..567n&link_type=abstract
Astronomical Society of Japan, Publications (ISSN 0004-6264), vol. 42, no. 4, 1990, p. 567-582.
Astronomy and Astrophysics
Astronomy
21
A Stars, B Stars, Carbon Monoxide, H Alpha Line, Interstellar Gas, Molecular Clouds, Emission Spectra, Flow Velocity, Molecular Ions, Molecular Spectra, Stellar Activity
Scientific paper
Results are presented on high-resolution observations, at various molecular lines, of the CO outflow and of a dense molecular cloud associated with the Herbig Ae/Be star LkH-alpha 198. Results show that the bipolar outflow is highly asymmetric. Dense condensations around the star reveal many different distributions in molecular lines of (C-13)O, HCO(+), HCN, and CS. The HCO(+) and CS condensations display velocity gradients that indicate rotation around the star. The structures of the CO bipolar flow and molecular condensations support the hypothesis that it is LkH-alpha 198, rather than the nearby variable V376 Cas, that is the source of the outflow.
Kogure Tomokazu
Nakano Makoto
Tatematsu Ken'ichi
YOSHIDA Shigeomi
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