Bridging the Mass Divide: Super and Massive AGB Star Yields

C L Doherty; P Gil-Pons; H H B Lau; J C Lattanzio

Bridging the Mass Divide: Super and Massive AGB Star Yields

C L Doherty, P Gil-Pons, H H B Lau, J C Lattanzio

School of Mathematics

Research output: Contribution to conference › Poster

Abstract

Super Asymptotic Giant Branch Stars (Super AGBs) lie in the mass range 6-11 Mο, which bridges the divide between low/intermediate mass AGB and massive stars. During the thermally pulsing phase of evolution competition between hot bottom burning (HBB) and third dredge up (3DU) events determine the stellar yields. Obtaining these yields is far more computationally demanding than those of most AGB stars because Super AGBs undergo up to a few thousand thermal pulses. We describe results from evolutionary and nucleosynthetic calculations for these stellar models. We examine element production in these Super AGB stars over time, with results from five metallicities spanning the range Z = 0.02-10−4 ([Fe/H] 0 to −2.3). Super AGB star nucleosynthetic yields have hitherto been neglected in galactic chemical evolution modelling.

Original language	English
Pages	39-40
Number of pages	2
Publication status	Published - 2012
Event	Conference on the Galactic Archaeology - Near-Field Cosmology and the Formation of the Milky Way - Duration: 1 Jan 2011 → …

Conference

Conference	Conference on the Galactic Archaeology - Near-Field Cosmology and the Formation of the Milky Way
Period	1/01/11 → …

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Cite this

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title = "Bridging the Mass Divide: Super and Massive AGB Star Yields",

abstract = "Super Asymptotic Giant Branch Stars (Super AGBs) lie in the mass range 6-11 Mο, which bridges the divide between low/intermediate mass AGB and massive stars. During the thermally pulsing phase of evolution competition between hot bottom burning (HBB) and third dredge up (3DU) events determine the stellar yields. Obtaining these yields is far more computationally demanding than those of most AGB stars because Super AGBs undergo up to a few thousand thermal pulses. We describe results from evolutionary and nucleosynthetic calculations for these stellar models. We examine element production in these Super AGB stars over time, with results from five metallicities spanning the range Z = 0.02-10−4 ([Fe/H] 0 to −2.3). Super AGB star nucleosynthetic yields have hitherto been neglected in galactic chemical evolution modelling.",

author = "Doherty, {C L} and P Gil-Pons and Lau, {H H B} and Lattanzio, {J C}",

year = "2012",

language = "English",

pages = "39--40",

note = "Conference on the Galactic Archaeology - Near-Field Cosmology and the Formation of the Milky Way ; Conference date: 01-01-2011",

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T1 - Bridging the Mass Divide

T2 - Conference on the Galactic Archaeology - Near-Field Cosmology and the Formation of the Milky Way

AU - Doherty, C L

AU - Gil-Pons, P

AU - Lau, H H B

AU - Lattanzio, J C

PY - 2012

Y1 - 2012

N2 - Super Asymptotic Giant Branch Stars (Super AGBs) lie in the mass range 6-11 Mο, which bridges the divide between low/intermediate mass AGB and massive stars. During the thermally pulsing phase of evolution competition between hot bottom burning (HBB) and third dredge up (3DU) events determine the stellar yields. Obtaining these yields is far more computationally demanding than those of most AGB stars because Super AGBs undergo up to a few thousand thermal pulses. We describe results from evolutionary and nucleosynthetic calculations for these stellar models. We examine element production in these Super AGB stars over time, with results from five metallicities spanning the range Z = 0.02-10−4 ([Fe/H] 0 to −2.3). Super AGB star nucleosynthetic yields have hitherto been neglected in galactic chemical evolution modelling.

AB - Super Asymptotic Giant Branch Stars (Super AGBs) lie in the mass range 6-11 Mο, which bridges the divide between low/intermediate mass AGB and massive stars. During the thermally pulsing phase of evolution competition between hot bottom burning (HBB) and third dredge up (3DU) events determine the stellar yields. Obtaining these yields is far more computationally demanding than those of most AGB stars because Super AGBs undergo up to a few thousand thermal pulses. We describe results from evolutionary and nucleosynthetic calculations for these stellar models. We examine element production in these Super AGB stars over time, with results from five metallicities spanning the range Z = 0.02-10−4 ([Fe/H] 0 to −2.3). Super AGB star nucleosynthetic yields have hitherto been neglected in galactic chemical evolution modelling.

M3 - Poster

SP - 39

EP - 40

Y2 - 1 January 2011

ER -