Abstract
We explore the production of and stellar yields of 7Li for a range of mass and metallicity. We test the effect of varying the mass loss rate and well as the mixing length parameter on the production of lithium. There is a short duration of strong enhancement of Lithium in the early AGB phase, before any thermal pulses. Higher mass-loss rate, particularly in the early AGB phase, will result in stronger Li enhancement. In general, metal-poor stars produce less lithium because the mass-loss rates are lower during the Li-rich phase. We also compare the observed abundances of Li-rich stars with our models and discuss possible formation of Li-rich stars through mass transfer from SAGB primary. If a SAGB star is observed before thermal pulses or the SAGB primary evolution truncated before thermal pulses due to binary interactions, then the observed SAGB stars or its companion may be observed as Li-rich but without s-process isotopes.
| Original language | English |
|---|---|
| Title of host publication | Memorie della Societa Astronomica Italiana, Supplementi - Journal of the Italian Astronomical Society, Supplement |
| Subtitle of host publication | Lithium in the Cosmos; Paris; France; 27 February 2012 through 29 February 2012; Code 110336 |
| Editors | F Iocco, P Bonifacio, E Vangioni |
| Place of Publication | Florence Italy |
| Publisher | Italian Astronomical Society (SAIt) |
| Pages | 247-254 |
| Number of pages | 8 |
| Volume | 22 |
| Publication status | Published - 2012 |
| Event | Lithium in the Cosmos 2012 - Institut d'Astrophysique de Paris, Paris, France Duration: 27 Feb 2012 → 29 Feb 2012 http://www.iap.fr/vie_scientifique/ateliers/lithiuminthecosmos2012/index.html |
Publication series
| Name | Memorie della Societa Astronomica Italiana, Supplementi [Journal of the Italian Astronomical Society, Supplement] |
|---|---|
| Publisher | Societa Astronomica Italiana [Italian Astronomical Society (SAIt)] |
| Volume | 22 |
| ISSN (Print) | 0037-8720 |
Conference
| Conference | Lithium in the Cosmos 2012 |
|---|---|
| Country | France |
| City | Paris |
| Period | 27/02/12 → 29/02/12 |
| Other | Monash researcher confirmed that the conference papers were not peer reviewed |
| Internet address |
Keywords
- AGB and post-AGB-evolution-binaries
- Stars
Cite this
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Lithium production in SAGB stars. / Lau, Herbert H B; Doherty, Carolyn L.; Gil-Pons, Pilar; Lattanzio, John C.
Memorie della Societa Astronomica Italiana, Supplementi - Journal of the Italian Astronomical Society, Supplement: Lithium in the Cosmos; Paris; France; 27 February 2012 through 29 February 2012; Code 110336. ed. / F Iocco; P Bonifacio; E Vangioni. Vol. 22 Florence Italy : Italian Astronomical Society (SAIt), 2012. p. 247-254 (Memorie della Societa Astronomica Italiana, Supplementi [Journal of the Italian Astronomical Society, Supplement]; Vol. 22).Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research
TY - GEN
T1 - Lithium production in SAGB stars
AU - Lau, Herbert H B
AU - Doherty, Carolyn L.
AU - Gil-Pons, Pilar
AU - Lattanzio, John C.
PY - 2012
Y1 - 2012
N2 - We explore the production of and stellar yields of 7Li for a range of mass and metallicity. We test the effect of varying the mass loss rate and well as the mixing length parameter on the production of lithium. There is a short duration of strong enhancement of Lithium in the early AGB phase, before any thermal pulses. Higher mass-loss rate, particularly in the early AGB phase, will result in stronger Li enhancement. In general, metal-poor stars produce less lithium because the mass-loss rates are lower during the Li-rich phase. We also compare the observed abundances of Li-rich stars with our models and discuss possible formation of Li-rich stars through mass transfer from SAGB primary. If a SAGB star is observed before thermal pulses or the SAGB primary evolution truncated before thermal pulses due to binary interactions, then the observed SAGB stars or its companion may be observed as Li-rich but without s-process isotopes.
AB - We explore the production of and stellar yields of 7Li for a range of mass and metallicity. We test the effect of varying the mass loss rate and well as the mixing length parameter on the production of lithium. There is a short duration of strong enhancement of Lithium in the early AGB phase, before any thermal pulses. Higher mass-loss rate, particularly in the early AGB phase, will result in stronger Li enhancement. In general, metal-poor stars produce less lithium because the mass-loss rates are lower during the Li-rich phase. We also compare the observed abundances of Li-rich stars with our models and discuss possible formation of Li-rich stars through mass transfer from SAGB primary. If a SAGB star is observed before thermal pulses or the SAGB primary evolution truncated before thermal pulses due to binary interactions, then the observed SAGB stars or its companion may be observed as Li-rich but without s-process isotopes.
KW - AGB and post-AGB-evolution-binaries
KW - Stars
UR - http://www.scopus.com/inward/record.url?scp=84922468885&partnerID=8YFLogxK
M3 - Conference Paper
VL - 22
T3 - Memorie della Societa Astronomica Italiana, Supplementi [Journal of the Italian Astronomical Society, Supplement]
SP - 247
EP - 254
BT - Memorie della Societa Astronomica Italiana, Supplementi - Journal of the Italian Astronomical Society, Supplement
A2 - Iocco, F
A2 - Bonifacio, P
A2 - Vangioni, E
PB - Italian Astronomical Society (SAIt)
CY - Florence Italy
ER -