Issue |
A&A
Volume 390, Number 2, August I 2002
|
|
---|---|---|
Page(s) | 501 - 510 | |
Section | Extragalactic astronomy | |
DOI | https://doi.org/10.1051/0004-6361:20020727 | |
Published online | 12 July 2002 |
Millimetre observations of infrared carbon stars *,**
I. The data
1
Instituut voor Sterrenkunde, PACS-ICC, Celestijnenlaan 200B, 3001 Heverlee, Belgium
2
Mount Stromlo and Siding Spring Observatory, Cotter road, Weston ACT, Australia
3
Kapteyn Astronomical Institute, Postbus 800, 9700 AV, Groningen, The Netherlands
4
Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile
Corresponding author: M. Groenewegen, groen@ster.kuleuven.ac.be
Received:
1
March
2002
Accepted:
15
May
2002
Millimetre observations of IRAS selected red carbon stars are presented. About 260 stars have been observed with SEST and IRAM in the CO (1–0) and CO (2–1) lines and partially in HCN (1–0) and SiO (3–2). An overall detection rate, in at least one line, of about 80% is achieved. The survey represents the second largest survey for AGB stars, and the largest ever for carbon stars. Two new detections in SiO (3–2) in carbon stars are reported. When available, the SiO/HCN and HCN/CO (1–0) line ratios are consistent with the ratios expected for carbon stars.
Key words: circumstellar matter / stars: mass-loss / stars: AGB and post-AGB
© ESO, 2002
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