SIMBAD references

1998A&AS..130....1N - Astron. Astrophys., Suppl. Ser., 130, 1-64 (1998/May-2)

A 12CO (J=1->0) and (J=2->1) atlas of circumstellar envelopes of AGB and post-AGB stars.

NERI R., KAHANE C., LUCAS R., BUJARRABAL V. and LOUP C.

Abstract (from CDS):

We present the results of a 12CO (J=1->0) and (J=2->1) survey on a sample of 46 objects classified as AGB and post-AGB stars. We have obtained fully sampled high resolution maps of their 12CO (J=1->0) emission by combining visibilities from the IRAM interferometer with short spacing observations from the IRAM 30 m telescope. Properties of their circumstellar envelopes like fluxes, radii, and positions are derived from model fits to the visibilities and compared to the results obtained from 12CO (J=2->1) maps observed at the IRAM 30 m telescope. From the 12CO (J=1->0) observations we have derived mass loss rates for 38 stars and established an empirical relation between the CO photodissociation radius of an envelope and the measured radius in the (J=1->0) emission.

Abstract Copyright:

Journal keyword(s): Atlases - stars: AGB, post-AGB - stars: circumstellar matter - stars: mass-loss - stars: evolution - radio lines: stars

Simbad objects: 92

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