Carbon monoxide emission from the planetary nebula M 3-28

Details Carbon monoxide emission from the planetary nebula M 3-28 Carbon monoxide emission from the planetary nebula M 3-28

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...258..469g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 258, no. 2, p. 469-471.

Astronomy and Astrophysics

Astrophysics

4

Carbon Monoxide, Forbidden Transitions, Planetary Nebulae, Radio Emission, Stellar Envelopes, Morphology, Nitrogen Ions, Oxygen Ions

Scientific paper

We detected CO emission, in the J = 1 - 0 and J = 2 - 1 rotational transitions, toward the bipolar planetary nebula M 328. The carbon monoxide emission most probably arises in a neutral remnant of the circumstellar envelope of the progenitor star. For an assumed distance of 2.8 kpc, we estimate the mass in molecular hydrogen to be about 0.2 solar mass. The ratio of molecular mass to ionized mass is about 7 for this nebula.

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