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Constraining the th...
Constraining the thermally pulsing asymptotic giant branch phase with resolved stellar populations in the Small Magellanic Cloud
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- Pastorelli, Giada (författare)
- Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy
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- Marigo, Paola (författare)
- Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy
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- Girardi, Leo (författare)
- INAF, Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy
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- Chen, Yang (författare)
- Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy
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- Rubele, Stefano (författare)
- Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy;INAF, Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy
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- Trabucchi, Michele (författare)
- Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy
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- Aringer, Bernhard (författare)
- Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy
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- Bladh, Sara, 1974- (författare)
- Uppsala universitet,Teoretisk astrofysik,Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy
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- Bressan, Alessandro (författare)
- SISSA, Via Bonomea 365, I-34136 Trieste, Italy
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- Montalban, Josefina (författare)
- Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy
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- Boyer, Martha L. (författare)
- STScI, 3700 San Martin Dr, Baltimore, MD 21218 USA
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- Dalcanton, Julianne J. (författare)
- Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA
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- Eriksson, Kjell (författare)
- Uppsala universitet,Teoretisk astrofysik
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- Groenewegen, Martin A. T. (författare)
- Koninklijke Sterrenwacht Belgie, Ringlaan 3, B-1180 Brussels, Belgium
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- Höfner, Susanne (författare)
- Uppsala universitet,Teoretisk astrofysik
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- Lebzelter, Thomas (författare)
- Univ Vienna, Dept Astrophys, Tuerkenschanzstr 17, A-1180 Vienna, Austria
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- Nanni, Ambra (författare)
- Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy
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- Rosenfield, Philip (författare)
- Eureka Sci Inc, 2452 Delmer St, Oakland, CA 94602 USA
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- Wood, Peter R. (författare)
- Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia
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- Cioni, Maria-Rosa L. (författare)
- Leibniz Inst Astrophys Potsdam, Sternwarte 16, D-14482 Potsdam, Germany
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(creator_code:org_t)
- 2019-03-18
- 2019
- Engelska.
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Ingår i: Monthly notices of the Royal Astronomical Society. - : OXFORD UNIV PRESS. - 0035-8711 .- 1365-2966. ; 485:4, s. 5666-5692
- Relaterad länk:
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http://arxiv.org/pdf...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The thermally pulsing asymptotic giant branch (TP-AGB) experienced by low-and intermediate-mass stars is one of the most uncertain phases of stellar evolution and the models need to be calibrated with the aid of observations. To this purpose, we couple high-quality observations of resolved stars in the Small Magellanic Cloud (SMC) with detailed stellar population synthesis simulations computed with the TRILEGAL code. The strength of our approach relies on the detailed spatially resolved star formation history of the SMC, derived from the deep near-infrared photometry of the VISTA survey of the Magellanic Clouds, as well as on the capability to quickly and accurately explore a wide variety of parameters and effects with the COLIBRI code for the TP-AGB evolution. Adopting a well-characterized set of observations - star counts and luminosity functions - we set up a calibration cycle along which we iteratively change a few key parameters of the TP-AGB models until we eventually reach a good fit to the observations. Our work leads to identify two best-fitting models that mainly differ in the efficiencies of the third dredge-up and mass-loss in TP-AGB stars with initial masses larger than about 3 M-circle dot. On the basis of these calibrated models, we provide a full characterization of the TP-AGB stellar population in the SMC in terms of stellar parameters (initial masses, C/O ratios, carbon excess, mass-loss rates). Extensive tables of isochrones including these improved models are publicly available.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- stars: AGB and post-AGB
- stars: evolution
- stars: carbon
- stars: mass-loss
- Magellanic Clouds
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Till lärosätets databas
- Av författaren/redakt...
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Pastorelli, Giad ...
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Marigo, Paola
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Girardi, Leo
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Chen, Yang
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Rubele, Stefano
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Trabucchi, Miche ...
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visa fler...
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Aringer, Bernhar ...
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Bladh, Sara, 197 ...
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Bressan, Alessan ...
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Montalban, Josef ...
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Boyer, Martha L.
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Dalcanton, Julia ...
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Eriksson, Kjell
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Groenewegen, Mar ...
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Höfner, Susanne
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Lebzelter, Thoma ...
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Nanni, Ambra
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Rosenfield, Phil ...
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Wood, Peter R.
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Cioni, Maria-Ros ...
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