Matches in SemOpenAlex for { <https://semopenalex.org/work/W3021382222> ?p ?o ?g. }
- W3021382222 endingPage "A81" @default.
- W3021382222 startingPage "A81" @default.
- W3021382222 abstract "The cosmological lithium problem, that is, the discrepancy between the lithium abundance predicted by the Big Bang nucleosynthesis and the one observed for the stars of the 'Spite plateau', is one of the long standing problems of modern astrophysics. Recent hints for a possible solution involve lithium burning induced by protostellar mass accretion on Spite plateau stars. The purpose of this paper is to analyze the effect of protostellar accretion on low metallicity low-mass stars with a focus on PMS lithium evolution. We computed the evolution from the protostar to the MS phase of accreting models with final masses of 0.7 and 0.8 M$_odot$, and three metallicities Z=0.0001, Z=0.0010, and Z=0.0050. The effects of changing the main parameters affecting accreting models, that is the accretion energy (cold versus hot accretion), the initial seed mass $M_{seed}$ and radius $R_{seed}$, and the mass accretion rate $dot{m}$, have been investigated in detail. As for the main stellar properties and the surface $^7 Li$ abundance, hot accretion models converge to standard non-accreting ones within 1 Myr, regardless of the actual value of $M_{seed}$, $R_{seed}$, and $dot{m}$. Also, cold accretion models with a relatively large $M_{seed}$ ($gtrsim 10~M_{jup}$) or $R_{seed}$ ($gtrsim 1~R_odot$) converge to standard non-accreting ones in less than about 10-20~Myr. A drastically different evolution occurs whenever a cold protostellar accretion process starts from small values of $M_{seed}$ and $R_{seed}$ ($M_{seed}sim 1~M_{jup}$, $R_{seed} lesssim 1~R_odot$). These models almost entirely skip the standard Hayashi track evolution and deplete Li before the end of the accretion phase. The exact amount of depletion depends on the actual combination of the accretion parameters ($dot{m}$, $M_{seed}$, and $R_{seed}$), achieving in some cases the complete exhaustion of Li in the whole star." @default.
- W3021382222 created "2020-05-13" @default.
- W3021382222 creator A5010951456 @default.
- W3021382222 creator A5051551808 @default.
- W3021382222 creator A5054137091 @default.
- W3021382222 creator A5086826054 @default.
- W3021382222 creator A5090661346 @default.
- W3021382222 date "2020-06-01" @default.
- W3021382222 modified "2023-10-14" @default.
- W3021382222 title "Protostellar accretion in low mass metal poor stars and the cosmological lithium problem" @default.
- W3021382222 cites W1516214850 @default.
- W3021382222 cites W1521806406 @default.
- W3021382222 cites W1814196130 @default.
- W3021382222 cites W1946846524 @default.
- W3021382222 cites W1948729350 @default.
- W3021382222 cites W1962699520 @default.
- W3021382222 cites W1971733265 @default.
- W3021382222 cites W1972537197 @default.
- W3021382222 cites W1988574583 @default.
- W3021382222 cites W1995295165 @default.
- W3021382222 cites W2011331793 @default.
- W3021382222 cites W2020282587 @default.
- W3021382222 cites W2023991970 @default.
- W3021382222 cites W2024047931 @default.
- W3021382222 cites W2033039083 @default.
- W3021382222 cites W2033318843 @default.
- W3021382222 cites W2036762411 @default.
- W3021382222 cites W2048905273 @default.
- W3021382222 cites W2057036792 @default.
- W3021382222 cites W2062327870 @default.
- W3021382222 cites W2074143041 @default.
- W3021382222 cites W2080254441 @default.
- W3021382222 cites W2092804462 @default.
- W3021382222 cites W2102030688 @default.
- W3021382222 cites W2104177128 @default.
- W3021382222 cites W2114945401 @default.
- W3021382222 cites W2116889572 @default.
- W3021382222 cites W2119095722 @default.
- W3021382222 cites W2120415720 @default.
- W3021382222 cites W2129495060 @default.
- W3021382222 cites W2132675222 @default.
- W3021382222 cites W2140220905 @default.
- W3021382222 cites W2141687171 @default.
- W3021382222 cites W2145841079 @default.
- W3021382222 cites W2164719957 @default.
- W3021382222 cites W2170122842 @default.
- W3021382222 cites W2221977688 @default.
- W3021382222 cites W2273794806 @default.
- W3021382222 cites W2347347915 @default.
- W3021382222 cites W2761798359 @default.
- W3021382222 cites W2765701231 @default.
- W3021382222 cites W2766792342 @default.
- W3021382222 cites W2782931225 @default.
- W3021382222 cites W2786160414 @default.
- W3021382222 cites W2805385881 @default.
- W3021382222 cites W2899497983 @default.
- W3021382222 cites W2996078885 @default.
- W3021382222 cites W3098289135 @default.
- W3021382222 cites W3099573548 @default.
- W3021382222 cites W3099758390 @default.
- W3021382222 cites W3100361043 @default.
- W3021382222 cites W3101332912 @default.
- W3021382222 cites W3101456000 @default.
- W3021382222 cites W3102130999 @default.
- W3021382222 cites W3103984186 @default.
- W3021382222 cites W3104635643 @default.
- W3021382222 cites W3104715545 @default.
- W3021382222 cites W3105063603 @default.
- W3021382222 cites W3105756818 @default.
- W3021382222 cites W3105786752 @default.
- W3021382222 cites W3106103873 @default.
- W3021382222 cites W3125096806 @default.
- W3021382222 cites W4206273685 @default.
- W3021382222 cites W4289462480 @default.
- W3021382222 cites W4289875003 @default.
- W3021382222 cites W4297432658 @default.
- W3021382222 cites W4298097691 @default.
- W3021382222 cites W4300680226 @default.
- W3021382222 cites W1963911648 @default.
- W3021382222 doi "https://doi.org/10.1051/0004-6361/201936723" @default.
- W3021382222 hasPublicationYear "2020" @default.
- W3021382222 type Work @default.
- W3021382222 sameAs 3021382222 @default.
- W3021382222 citedByCount "6" @default.
- W3021382222 countsByYear W30213822222021 @default.
- W3021382222 countsByYear W30213822222022 @default.
- W3021382222 countsByYear W30213822222023 @default.
- W3021382222 crossrefType "journal-article" @default.
- W3021382222 hasAuthorship W3021382222A5010951456 @default.
- W3021382222 hasAuthorship W3021382222A5051551808 @default.
- W3021382222 hasAuthorship W3021382222A5054137091 @default.
- W3021382222 hasAuthorship W3021382222A5086826054 @default.
- W3021382222 hasAuthorship W3021382222A5090661346 @default.
- W3021382222 hasBestOaLocation W30213822221 @default.
- W3021382222 hasConcept C121332964 @default.
- W3021382222 hasConcept C125857072 @default.
- W3021382222 hasConcept C1276947 @default.
- W3021382222 hasConcept C150846664 @default.