Hostname: page-component-7c8c6479df-r7xzm Total loading time: 0 Render date: 2024-03-28T15:26:30.946Z Has data issue: false hasContentIssue false

Mass loss and luminosities of S and C AGB stars with and without Li

Published online by Cambridge University Press:  23 April 2010

Roald Guandalini
Affiliation:
Dipartimento di Fisica, Universitá degli Studi di Perugia, via Pascoli, 06123, Perugia, Italy email: guandalini@fisica.unipg.it
Sara Palmerini
Affiliation:
Dipartimento di Fisica, Universitá degli Studi di Perugia, via Pascoli, 06123, Perugia, Italy email: guandalini@fisica.unipg.it I.N.F.N. sezione di Perugia
Maurizio Busso
Affiliation:
Dipartimento di Fisica, Universitá degli Studi di Perugia, via Pascoli, 06123, Perugia, Italy email: guandalini@fisica.unipg.it I.N.F.N. sezione di Perugia
Enrico Maiorca
Affiliation:
Dipartimento di Fisica, Universitá degli Studi di Perugia, via Pascoli, 06123, Perugia, Italy email: guandalini@fisica.unipg.it I.N.F.N. sezione di Perugia
Stefan Uttenthaler
Affiliation:
Instituut voor Sterrenkunde, K. U. Leuven, Celestijnenlaan 200D, 3000 Leuven, Belgium
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present the preliminary results of an analysis performed on two samples of thermally pulsing Asymptotic Giant Branch stars from our Galaxy, the first made of carbon-rich sources and the second of S-type stars. We have estimated their absolute luminosities and updated rates of the stellar winds through methods based on their infrared spectrophotometry and on updated estimates of their variability and distance.

We then focus on those sources in our database showing Li in their spectra looking for correlations between the Li abundance and the other physical parameters, in the aim of establishing observational criteria for understanding the conditions for the occurrence of the deep mixing phenomena to which the production of Li is currently attributed.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2010

References

Andrews, A. D., Rodonó, M., Lensky, J. L. et al. 1988, A&A, 204, 177Google Scholar
Busso, M., Wasserburg, G. J., Nollett, K. M., & Calandra, A. 2007a, ApJ, 671, 802CrossRefGoogle Scholar
Busso, M., Guandalini, R., Persi, P., Corcione, L., & Ferrari-Toniolo, M. 2007b, AJ, 133, 2310CrossRefGoogle Scholar
Cameron, A. G. W. & Fowler, W. A. 1971, ApJ, 164, 111CrossRefGoogle Scholar
Charbonnel, C. & Balachandran, S. C. 2000, A&A, 359, 563Google Scholar
Denissenkov, P. A., Pinsonneault, M., & Mac Gregor, K. B. 2009, ApJ, 696, 1823CrossRefGoogle Scholar
Gilroy, K. K. 1989, ApJ, 347, 835CrossRefGoogle Scholar
Gilroy, K. K. & Brown, J. A. 1991, ApJ, 371, 578CrossRefGoogle Scholar
Gratton, R. G., Carretta, E., Matteucci, F., & Sneden, C. 2000, A&A, 358, 671Google Scholar
Guandalini, R., Busso, M., Ciprini, S., Silvestro, G., & Persi, P. 2006, A&A, 445, 1069Google Scholar
Guandalini, R. & Busso, M. 2008, A&A, 488, 657Google Scholar
Guandalini, R., Palmerini, S., Busso, M., & Uttenthaler, S. 2009, PASA, 26, 168CrossRefGoogle Scholar
Guandalini, R. 2010, A&A, in pressGoogle Scholar
Kraft, R. P. 1994, PASP, 106, 553CrossRefGoogle Scholar
Nordhaus, J., Busso, M., Wasserburg, G. J., Blackman, E. G., & Palmerini, S. 2008, ApJ (Letters), 684, 29CrossRefGoogle Scholar
Palacios, A., Charbonnel, C., Talon, S., & Siess, L. 2006, A&A, 453, 261Google Scholar
Palmerini, S. & Busso, M. 2008, New AR, 52, 412Google Scholar
Palmerini, S., Busso, M., Maiorca, E., & Guandalini, R. 2009, PASA, 26, 161CrossRefGoogle Scholar
Palmerini, S. et al. 2010, this conferenceGoogle Scholar
Sweigart, A. V. & Mengel, J. G. 1979, ApJ, 229, 624CrossRefGoogle Scholar
Uttenthaler, S., Lebzelter, T., Palmerini, S., Busso, M., Aringer, B., & Lederer, M. T. 2007, A&A (Letters), 471, 41Google Scholar
Wasserburg, G. J. & Busso, M. 2008, AIPC, 1001, 295Google Scholar