A 200 km/s molecular outflow in the protoplanetary nebula CRL 618

Details A 200 km/s molecular outflow in the protoplanetary nebula CRL 618 A 200 km/s molecular outflow in the protoplanetary nebula CRL 618

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...222l...1c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 222, no. 1-2, Sept. 1989, p. L1-L4.

Astronomy and Astrophysics

Astrophysics

97

Flow Velocity, Molecular Flow, Planetary Nebulae, Radio Observation, Stellar Mass Ejection, Angular Resolution, Carbon Monoxide, Hydrocyanic Acid, Molecular Gases

Scientific paper

An outflow of dense molecular gas with a terminal velocity of about 200 km/s has been detected in high angular resolution radio observations of the protoplanetary nebula CRL 618. The flow is found in the J=2-1 and 1-0 lines of CO. Flow with a smaller velocity span is also detected in several high excitation lines, including the J=25-24 line of HC3N and the J=3-2 lines of HCN and HCO(+). The results suggest that the outflow is bipolar and has a mass of about 0.01 solar mass. In addition, three lines of H2CO are detected in CRL 618.

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