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Understanding the immediate progenitors of planetary nebulae

Published online by Cambridge University Press:  30 August 2012

R. Sahai ,
M. R. Morris ,
C. Sánchez Contreras  and
M. J. Claussen
R. Sahai
Affiliation:
Jet Propulsion Laboratory, Caltech, Pasadena, CA 91109, email: [email protected]
M. R. Morris
Affiliation:
Dept. of Phys. & Astr., UCLA, Los Angeles, CA 90095, email: [email protected]
C. Sánchez Contreras
Affiliation:
Astrobiology Center (CSIC-INTA), Madrid, Spain, email: [email protected]
M. J. Claussen
Affiliation:
NRAO, 1003 Lopezville Road, Socorro, NM 87801, email: [email protected]
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Abstract

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Pre-Planetary Nebulae (PPNe) are believed to represent a relatively short, intermediate evolutionary phase in the evolution of AGB stars to Planetary Nebulae (PNe). Our unbiased, high-resolution imaging surveys with HST of young PNe and PPNe show very strong morphological similarities between these classes, enabling us to extend our morphological scheme for PPN classification to young PNe, preserving virtually all of the primary and secondary descriptors, and adding a few new ones. These morphological surveys show that the primary shaping of PNe begins during the PPNe and/or late-AGB phase, and the key to understanding the shaping process lies in the study of these PNe progenitors. Here we present results from two recent studies of PNe progenitors: (i) Hα emission with very broad wings and P-Cygni profiles as probes of the region where the fast post-AGB outflows that do the shaping are most likely launched from, and (ii) equatorial waists with large-sized dust grains and large masses.

Keywords

Stars: AGB and post-AGBstars: mass-lossaccretion disksbinaries: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 180 - 183
Copyright
Copyright © International Astronomical Union 2012

References

Arrieta, A. & Torres-Peimbert, S. 2003, ApJS, 147, 97 CrossRefGoogle Scholar
Bujarrabal, V., van Winckel, H., Neri, R., Alcolea, J., Castro-Carrizo, A., & Deroo, P. 2007, A&A, 468, L45 Google Scholar
Cohen, M., Van Winckel, H., Bond, H. E., & Gull, T. R. 2004, AJ, 127, 2362 CrossRefGoogle Scholar
de Marco, O. 2009, PASP, 121, 316 CrossRefGoogle Scholar
de Ruyter, S. et al. 2005, A&A, 435, 161 Google Scholar
Edwards, S. et al. 1987, ApJ, 321, 473 CrossRefGoogle Scholar
Gielen, C., Van Winckel, H., Min, M., Waters, L. B. F. M. & Lloyd Evans, T. 2008, A&A, 490, 725 Google Scholar
Huggins, P. J. 2007, ApJ, 663, 342 CrossRefGoogle Scholar
Jura, M., Webb, R. A., & Kahane, C. 2001, ApJ, L71CrossRefGoogle Scholar
Lee, H.-W. & Hyung, S. 2000, ApJL, 530, L49 CrossRefGoogle Scholar
Mastrodemos, N. & Morris, M. 1998, ApJ, 497, 303 CrossRefGoogle Scholar
Sahai, R. 2009, Asymmetrical Planetary Nebulae IV, eds. Corradi, R. L. M., Manchado, A. & Soker, N., electronic, I. A. C. publicationGoogle Scholar
Sahai, R. & Trauger, J. T. 1998, AJ, 116, 1357 CrossRefGoogle Scholar
Sahai, R., Young, K., Patel, N. A., Sánchez Contreras, C., & Morris, M. 2006, ApJ, 653, 1241 CrossRefGoogle Scholar
Sahai, R., Morris, M., Sánchez Contreras, C., & Claussen, M. 2007, AJ, 134, 2200 CrossRefGoogle Scholar
Sahai, R., Rubin, M., Sánchez Contreras, C., & Claussen, M. 2009, Asymmetrical Planetary Nebulae IV, eds. Corradi, R. L. M., Manchado, A. & Soker, N., electronic, I. A. C. publicationGoogle Scholar
Sahai, R., Findeisen, K., Gil de Paz, A., & Sánchez Contreras, C. 2008, ApJ, 689, 1274 CrossRefGoogle Scholar
Sahai, R., Morris, M. R., & Villar, G. G. 2011, AJ, 141, 134 CrossRefGoogle Scholar
Sahai, R., Blumenfeld, C., Morris, M., Sánchez Contreras, C., & Claussen, M. 2010, Bulletin of the American Astronomical Society, 42, 471 Google Scholar
Skopal, A. 2006, A&A, 457, 1003 Google Scholar
Sánchez Contreras, C. & Sahai, R. 2001, ApJL, 553, L173 CrossRefGoogle Scholar
Sánchez Contreras, C., Le Mignant, D., Sahai, R., Gil de Paz, A., & Morris, M. 2007, ApJ, 656, 1150 CrossRefGoogle Scholar
Sánchez Contreras, C., Sahai, R., Gil de Paz, A., & Goodrich, R. 2008, ApJS, 179, 166 CrossRefGoogle Scholar
Sánchez Contreras, & Sahai, 2011, ApJS, submittedGoogle Scholar
van Winckel, H., et al. 2009, A&A, 505, 1221 Google Scholar