A CO Survey of Young Planetary Nebulae

Details A CO Survey of Young Planetary Nebulae A CO Survey of Young Planetary Nebulae

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20513810h&link_type=abstract

American Astronomical Society Meeting 205, #138.10; Bulletin of the American Astronomical Society, Vol. 36, p.1572

Astronomy and Astrophysics

Astronomy

Scientific paper

We report the results of a sensitive survey of young planetary nebulae in the 1.3 mm CO J=2-1 line that significantly increases the available data on dense molecular gas in the early phases of nebula formation. The observations were made with the IRAM 30 m telescope using the 3x3 Heterodyne Receiver Array (HERA). This instrument is effective in discriminating the CO emission of planetary nebulae in the Galactic plane from contaminating emission of interstellar clouds along the line of sight. 110 nebulae were observed in the survey and 40 were detected. The results increase the number of young planetary nebulae with known CO emission by more than a factor of two. The CO spectra reveal a range of line profiles from parabolic to double-peaked, tracing the evolution of structure in the envelopes, and the line widths are found to be significantly wider than on the Asymptotic Giant Branch as a result of the interaction of the envelopes with high velocity jets.
This work is supported in part by NSF AST 03-07277.

Affiliated with

Also associated with

No associations

Rating

A CO Survey of Young Planetary Nebulae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A CO Survey of Young Planetary Nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A CO Survey of Young Planetary Nebulae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1643436