The dusty gas observed in elliptical galaxies must ultimately be derived from the population of planetary nebulae. However, if this gas had passed through the hot phase, most of the dust it contains would have been destroyed. In this paper we show that ram-pressure stripping of PNe envelopes in a high pressure interstellar environment can recompress the dusty material ejected during the AGB phase of evolution, and allow cold dusty clouds to fall intact towards the central regions of the galaxy, there to be available to power the active nucleus.
Titolo: | Do the Nuclei of Elliptical Galaxies Eat Planetary Nebulae? |
Autori Riconosciuti: | |
Autori: | Dopita, Michael A.; Massaglia, Silvano; Bodo, Gianluigi; Arnaboldi, Magda; Merluzzi, Paola |
Data di pubblicazione: | 2000 |
Abstract: | The dusty gas observed in elliptical galaxies must ultimately be derived from the population of planetary nebulae. However, if this gas had passed through the hot phase, most of the dust it contains would have been destroyed. In this paper we show that ram-pressure stripping of PNe envelopes in a high pressure interstellar environment can recompress the dusty material ejected during the AGB phase of evolution, and allow cold dusty clouds to fall intact towards the central regions of the galaxy, there to be available to power the active nucleus. |
Editore: | J. H. Kastner, N. Soker, and S. Rappaport |
Titolo del libro: | Asymmetrical Planetary Nebulae II: From Origins to Microstructures |
Volume: | 199 |
Pagina iniziale: | 423 |
Pagina finale: | 430 |
Nome del convegno: | Asymmetrical Planetary Nebulae II: From Origins to Microstructures |
Luogo del convegno: | Cambridge, MA, USA |
Anno del convegno: | August 3 - 6, 1999 |
Appare nelle tipologie: | 04A-Conference paper in volume |
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