Very cold IRAS objects and pre-planetary nebulae - CO observations

Details Very cold IRAS objects and pre-planetary nebulae - CO observations Very cold IRAS objects and pre-planetary nebulae - CO observations

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...173l..11l&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 173, no. 2, Feb. 1987, p. L11-L14. CNRS-supported research.

Astronomy and Astrophysics

Astronomy

100

Carbon Monoxide, Infrared Spectra, Planetary Nebulae, Stellar Evolution, Stellar Spectrophotometry, Asymptotic Giant Branch Stars, Giant Stars, Infrared Astronomy Satellite, Interstellar Matter, Millimeter Waves, Stellar Envelopes, Stellar Mass Ejection

Scientific paper

From a sample of the coldest IRAS objects having fluxes characteristic of dust emission from outflowing circumstellar shells from evolved stars, about 40 were searched for CO J = 1-0 emission and 9 were detected as likely evolved stars. At least two of these - HD 161796 and SAO 163075 - are associated with visible stars at high galactic latitude having intermediate spectral types. 89 Her was also observed, and detected in CO emission. These stars are discussed in terms of the likelihood that they represent a stage of rapid evolution between the asymptotic giant branch and planetary nebulae. Very few such objects were previously known. Several of the detected stars are either bipolar nebulae, or have stopped losing mass at a high rate some time ago, so that there is now little dust close to the star. An analysis of the mass loss rates of dust and gas is presented.

Affiliated with

Also associated with

No associations

Rating

Very cold IRAS objects and pre-planetary nebulae - CO observations 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 Very cold IRAS objects and pre-planetary nebulae - CO observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Very cold IRAS objects and pre-planetary nebulae - CO observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1010796