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Chemical composition and circumstellar shells of carbon stars - Any obvious relations?

Published online by Cambridge University Press:  04 August 2017

Kjell Eriksson ,
Bengt Gustafsson  and
Hans Olofsson
Kjell Eriksson
Affiliation:
Uppsala Astronomical Observatory, Box 515, S-751 20 Uppsala, Sweden
Bengt Gustafsson
Affiliation:
Uppsala Astronomical Observatory, Box 515, S-751 20 Uppsala, Sweden Stockholm Observatory, S-133 00 Saltsjöbaden, Sweden
Hans Olofsson
Affiliation:
Onsala Space Observatory, S-U39 00 Onsala, Sweden

Extract

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Evidence for circumstellar absorption around the warm N-type carbon star TX Piscium was found in a high-resolution IUE spectrum by Eriksson et al. (1986). This investigation also included the search, with a positive result, for CO J=1−0 emission from the circumstellar shell. From the Mn I absorption and CO emission a column density of about 1020–1022 H atoms per cm2 was estimated, as well as a mass loss rate around 10−7–10−6 M per year.

Type
Stellar Coronae: Chromospheres of Cool Stars
Information
Symposium - International Astronomical Union , Volume 122: Circumstellar Matter , 1987 , pp. 381 - 382
Copyright
Copyright © Reidel 1987 

References

Eriksson, K., Gustafsson, B., Johnson, H.R., Querci, F., Querci, M., Baumert, J.H., Carlsson, M. & Olofsson, H. 1986: Astron. Astrophys. 161, 305 Google Scholar
Lambert, D.L., Gustafsson, B., Eriksson, K. & Hinkle, K.H. 1986: Astrophys. J. Suppl., September issue Google Scholar