A CO J = 2-1 survey of type I post-main-sequence nebulae

Details A CO J = 2-1 survey of type I post-main-sequence nebulae A CO J = 2-1 survey of type I post-main-sequence nebulae

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...218..257p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 218, no. 1-2, July 1989, p. 257-263. Research supported by CAICYT and SERC.

Astronomy and Astrophysics

Astrophysics

6

Astronomical Spectroscopy, Carbon Monoxide, Interstellar Gas, Nebulae, Brightness Temperature, Emission Spectra, Radiation Distribution, Spectral Line Width, Ultraviolet Radiation

Scientific paper

Nine type I post-main-sequence nebulae were observed in CO J = 2-1 using the NRAO 12-m antenna at Kitt Peak. It is found that, at the most, 20 percent of type I sources have antenna temperatures of greater than 0.2 K. The results suggest secondary kinematic splitting of the primary emission shell, and confirm the presence of high velocity outflows distinguished by an anomalous spatiokinematic morphology.

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