CO and HCN observations of circumstellar envelopes. A catalogue - Mass loss rates and distributions

Details CO and HCN observations of circumstellar envelopes. A catalogue - Mass loss rates and distributions CO and HCN observations of circumstellar envelopes. A catalogue - Mass loss rates and distributions

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26as...99..291l&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 99, no. 2, p. 291-377.

Astronomy and Astrophysics

Astrophysics

353

Asymptotic Giant Branch Stars, Carbon Monoxide, Hydrocyanic Acid, Planetary Nebulae, Stellar Envelopes, Stellar Mass Ejection, Astronomical Catalogs, Emission Spectra, Star Distribution, Stellar Evolution

Scientific paper

We have searched the literature for all observations of the (C-12)O (1-0), (C-12)O (2-1), and HCN (1-0) lines in circumstellar envelopes of late type stars published between January 1985 and September 1992. We report data for 1361 observations (stellar velocity, expansion velocity, peak intensity, integrated area, noise level). This CO-HCN sample now contains 444 sources; 184 are identified as O-rich, 205 as C-rich, and there are 9 S stars. About 85 percent of the sources are AGB stars. There are 32 planetary nebulae and about thirty post-AGB stars candidates. Besides results of mm-observations, we also list identifications, coordinates, IRAS data, and chemical and spectral types for every source. For AGB stars, we have estimated (or compiled) bolometric fluxes and distances for 349 sources, and mass loss rates deduced from CO results for 324 sources, taking into account the influence of the CO photodissociation radius. We also list mass loss rates derived from detailed models of CO emission in the literature.

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