Abundance Patterns in Planetary Nebulae
| dc.creator | Kwitter, Karen B. | |
| dc.creator | Henry, Richard C. | |
| dc.date | 1999-09-17 | |
| dc.date.accessioned | 2026-07-07T02:33:21Z | |
| dc.date.available | 2026-07-07T02:33:21Z | |
| dc.description | We previously determined abundances of He, C, N, O, and Ne for a sample of planetary nebulae (PNe) representing a broad range in progenitor mass and metallicity, and we now compare them with theoretical predictions of PNe abundances from a grid of intermediate-mass star models. We find very good agreement between observations and theory, lending strong support to our current understanding of nucleosynthesis in stars below 8Mo in birth mass. In particular, C and N abundance patterns are consistent with the occurrence of hot-bottom burning in stars above roughly 3.5Mo, a process that converts much of 12C into 14N during the AGB phase. This agreement also supports the validity of published stellar yields of C and N in the study of the abundance evolution of these elements. | |
| dc.description | 4 pages, 2 figures; to appear in "Asymmetrical Planetary Nebulae II: From Origins to Microstructures," ASP Conference Series, J.H. Kastner, N. Soker, and S.A. Rappaport, eds | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9909310 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9909310 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/14805 | |
| dc.subject | Astrophysics | |
| dc.title | Abundance Patterns in Planetary Nebulae | |
| dc.type | text |