Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-25T04:47:11.152Z Has data issue: false hasContentIssue false
  • English
  • Français

New advances in the field of planetary nebulae from ultraviolet observations

Published online by Cambridge University Press:  30 August 2012

Luciana Bianchi
Luciana Bianchi*
Affiliation:
Johns Hopkins University, Dept. of Physics and Astronomy, 3400 N. Charles St. Baltimore, MD 21218-2695, USA email: [email protected]
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.

The ultraviolet (UV) domain, in particular shortwards of Lyα, provides unique information to unravel the physical parameters of Central Stars of Planetary Nebulae (CSPNe) and the paths for this elusive final stage of stellar evolution, thanks to a wealth of diagnostic transitions from ionic species not observable at other wavelengths. Intermediate mass stars are the major providers of important elements like C and N. Understanding how they shed most of their initial mass is critical for understanding the chemical enrichment of the ISM. Mass-loss diagnostic lines abound at UV wavelengths, and when the CSPN reaches the hottest Teff before turning on the WD-cooling sequence, and the wind fades, the last wind lines to disappear are found in the far-UV, as well as diagnostic lines for elements such as Ne. This domain also offers a host of H2 transitions, tracing the circum-stellar material expelled in previous phases. UV images and spectra of PNe add critical constraints to their ionization structure and to some abundances. Finally, the recent GALEX sky surveys in two UV bands afforded the first unbiased census of hot white dwarfs (WD) and post-AGB objects in the Milky Way, significantly expanding known catalogs and providing statistical constraints to the initial-final mass relation.

Keywords

stars: AGB and post-AGBstars: atmospheresstars: abundancesstars: fundamental parametersstars: mass lossstars: windsoutflowswhite dwarfsplanetary nebulae: generalGalaxy: stellar contentultraviolet: starssurveyscatalogs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 45 - 52
Copyright
Copyright © International Astronomical Union 2012

References

Güdel, M. 2004, A&A Rev. 12, 71 Google Scholar
Aleman, I. & Gruenwald, R. 2004, ApJ 607, 865 CrossRefGoogle Scholar
Ali, A., et al. 2001, MNRAS, 325, 881 CrossRefGoogle Scholar
Balick, B. 2012, these proceedings Google Scholar
Bianchi, L. 2011, ApSS 335 51 Google Scholar
Bianchi, L. 2009, ApSS, 320, 11 Google Scholar
Bianchi, L., Manchado, A., & Forster, K. 2012, these proceedings Google Scholar
Bianchi, L., et al. 2011a, MNRAS, 411, 2770 CrossRefGoogle Scholar
Bianchi, L., et al. 2011b, ApSS, 335, 161 Google Scholar
Bianchi, L., Herald, J., & Garcia, M. 2009, in Future Directions in Ultraviolet Spectroscopy, AIPC, Van Steenberg, et al. (eds.), 1135, 145 Google Scholar
Bianchi, L., et al. 2008, in Space Astronomy: The UV Window to the Universe, Gomez de Castro, A.I. & Brosh, N. (eds.)Google Scholar
Bianchi, L. & Herald, J. 2007, in The UV Universe: Stars from Birth to Death Gomez de Castro, A.I. and Barstow, M. A. (eds.), (Editorial Complutense), p. 89 Google Scholar
Bianchi, L., et al. 2007, ApJS, 173, 659 CrossRefGoogle Scholar
Bianchi, L. & Garcia, M. 2002, ApJ, 581, 610 CrossRefGoogle Scholar
Bujarrabal, V. 2006, IAU Symp. No. 234, 193CrossRefGoogle Scholar
Chu, Y. H. 2012, these proceedings CrossRefGoogle Scholar
Drilling, & Schönberner, D. 1985, A&A, 146, L23 Google Scholar
Garcia, M. & Bianchi, L. 2004, ApJ, 606, 497 CrossRefGoogle Scholar
Georgiev, L., et al. 2008, ApJ, 681, 333 CrossRefGoogle Scholar
Hamann, W. R. & Koesterke, L. 1998, A&A, 335, 1003 Google Scholar
Hamann, W. R., et al. 1998, in: Clumping in Hot Stars Winds: Proceedings of an International Workshop held in Potsdam, Germany, Hamann, W.R., Feldmeier, A., & Oskinova, L.M (eds.), (Universittsverlag Potsdam), p. 75 Google Scholar
Hamann, W. R. 2008, ASP Conf. Ser., 391, 293 Google Scholar
Herald, J. E. & Bianchi, L. 2011, MNRAS, in pressGoogle Scholar
Herald, J. E., Bianchi, L., & Hillier, J. 2005, ApJ, 627, 424 CrossRefGoogle Scholar
Herald, J. E. & Bianchi, L. 2007, ApJ, 661, 845 CrossRefGoogle Scholar
Herald, J. E. & Bianchi, L. 2004b, ApJ, 609, 378 CrossRefGoogle Scholar
Herald, J. E. & Bianchi, L. 2004a, ApJ, 611, 294 CrossRefGoogle Scholar
Herald, J. E. & Bianchi, L. 2002, ApJ, 580, 434 CrossRefGoogle Scholar
Herwig, F. 2005, ARA&A, 43, 435 Google Scholar
Hillier, D. J. & Miller, D. L. 1999, ApJ, 519, 354 CrossRefGoogle Scholar
Jahn, D., et al. 2007, A&A, 462, 281 Google Scholar
Keller, G., et al. 2011, MNRAS, in pressGoogle Scholar
Kudritzki, R., Urbaneja, M. A., & Puls, J. 2006, IAU Symp. No. 234, 119CrossRefGoogle Scholar
Kwitter, K. 2012, these proceedings Google Scholar
Kwok, S. 1987, Phys. Reports, 156, 111 CrossRefGoogle Scholar
Kwok, S. 2003, IAU Symp. No. 234, 3CrossRefGoogle Scholar
Kwok, S. 2010, PASA, 27, 174 CrossRefGoogle Scholar
Manchado, A., et al. 2012, these proceedings Google Scholar
Marigo, P., et al. 2001, A&A, 378, 958 Google Scholar
Milingo, J.B., et al. 2006, IAU Symp. No. 234, p.459CrossRefGoogle Scholar
Oskinova, L., et al. 2007, A&A, 476, 1331 Google Scholar
Parker, Q. 2012, these proceedings CrossRefGoogle Scholar
Peimbert, M. 1978, in Terzian, Y. ed., IAU Symp. No. 76, Dordrecht: Reidel, p.215 Google Scholar
Shaw, R. A., et al. 2010, ApJ, 717, 562 CrossRefGoogle Scholar
Shustov, B., et al. 2011, ApSS, 335, 273 Google Scholar
Tenenbaum, E. D., et al. 2009, ApJ, 704, L108 CrossRefGoogle Scholar
Torres-Peimbert, S., Peimbert, 1997, IAU Symp. No. 180, 175CrossRefGoogle Scholar
Urbaneja, M. A., et al. 2008, in: Clumping in Hot Stars Winds: Proceedings of an International Workshop held in Potsdam, Germany, Hamann, W.R., Feldmeier, A., & Oskinova, L.M (eds.), (Universittsverlag Potsdam), p. 67 Google Scholar
Werner, K., et al. 2004, A&A, 427, 685 Google Scholar
Werner, K., et al. 2010, ApJ, 719, 32 CrossRefGoogle Scholar
Werner, K. 2012, these proceedings Google Scholar