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Heavy elements in planetary nebulae: A theorist's gold mine

Published online by Cambridge University Press:  30 August 2012

Amanda I. Karakas
Affiliation:
Research School of Astronomy & Astrophysics, Mount Stromlo Observatory, Weston Creek ACT 2611, Australia email: [email protected]
Maria Lugaro
Affiliation:
Monash Centre for Astrophysics (MoCA), Monash University, Clayton VIC 3800, Australia email: [email protected]
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Abstract

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Observations of planetary nebulae have revealed a wealth of information about the composition of heavy elements synthesized by the slow neutron capture process (the s process). In some of these nebulae the abundances of neutron-capture elements are enriched by factors of 10 to 30 times the solar value, indicating that these elements were produced in the progenitor star while it was on the asymptotic giant branch (AGB). In this proceedings we summarize results of our recent full s-process network predictions covering a wide range of progenitor masses and metallicities. We compare our model predictions to observations and show how this can provide important insights into nucleosynthesis processes occurring deep within AGB stars.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2012

References

Abia, C., Domnguez, I., Gallino, R., et al. 2002, ApJ, 579, 817 CrossRefGoogle Scholar
Busso, M., Gallino, R., Lambert, D. L., Travaglio, C., & Smith, V. V. 2001, ApJ, 557, 802 CrossRefGoogle Scholar
Dinerstein, H. L. & Geballe, T. R. 2001, ApJ, 562, 515 Google Scholar
Gallino, R., Arlandini, C., Busso, M., et al. 1998, ApJ, 497, 388 Google Scholar
García-Hernández, D. A., Garca-Lario, P., Plez, B., D'Antona, F., Manchado, A. & Trigo-Rodríguez, J. M. 2006, Science, 314, 1751 CrossRefGoogle Scholar
Henry, R. B. C., Kwitter, K. B., Jaskot, A. E., Balick, B., Morrison, M. A., & Milingo, J. B. 2010, ApJ, 724, 748 CrossRefGoogle Scholar
Herwig, F. 2005, ARA&A, 43, 435 Google Scholar
Karakas, A. I. 2010, MNRAS, 403, 1413 CrossRefGoogle Scholar
Karakas, A. I., et al. 2009, ApJ, 690, 1130 CrossRefGoogle Scholar
Karakas, A. I. & Lugaro, M. 2010, PASA, 27, 227 Google Scholar
Karakas, A. I., Campbell, S. W., & Stancliffe, R. J. 2010, ApJ, 713, 374 CrossRefGoogle Scholar
Lugaro, M., Karakas, A. I., Stancliffe, R. J., & Rijs, C. 2012, ApJ, 747, 2 CrossRefGoogle Scholar
Otsuka, M., Tajitsu, A., Hyung, S., & Izumiura, H. 2010, ApJ, 723, 658 CrossRefGoogle Scholar
Pequignot, D. & Baluteau, J. P. 1994, A&A, 283, 593 Google Scholar
Sharpee, B., Zhang, Y., Williams, R., Pellegrini, E., Cavagnolo, K., Baldwin, J., Phillips, M., & Liu, X.-W. 2007, ApJ, 659, 1265 Google Scholar
Shaw, R. A., Lee, T. H., Stanghellini, L., Davies, J. E., García-Hernández, D. A., García-Lario, P., Perea-Calderón, J. V., Villaver, E., Manchado, A., Palen, S., & Balick, B. 2010, ApJ, 717, 562 CrossRefGoogle Scholar
Stasińska, G., Morisset, C., Tovmassian, G., Rauch, T., et al. 2010, A&A, 511, A44 Google Scholar
Sterling, N. C. & Dinerstein, H. L. 2008, ApJS, 174, 158 CrossRefGoogle Scholar
van Raai, M. A., Lugaro, M., Karakas, A. I., García-Hernández, D. A., & Yong, D. 2012, A&A, 540, A44 Google Scholar
van Winckel, H. 2003, ARA&A, 41, 391 Google Scholar