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Shaping the initial-final mass relation of white dwarfs with AGB outflows

Published online by Cambridge University Press:  30 November 2022

Paola Marigo Open the ORCID record for Paola Marigo [Opens in a new window]
Paola Marigo*
Affiliation:
Department of Physics and Astronomy G. Galilei, University of Padova, Vicolo dell’Osservatorio 3,i IT-35136, Padova, Italy email: [email protected]
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Abstract

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A recent analysis of a few carbon-oxygen white dwarfs in old open clusters of the Milky Way (MW) identified a kink in the initial-final mass relation (IFMR), located over a range of initial masses, 1.65 ≲ Mi/M⊙ ≲ 2.10, which unexpectedly interrupts the commonly assumed monotonic trend. The proposed interpretation links this observational fact to the formation of carbon stars and the modest outflows (with mass loss rate < 10−7 M⊙/yr) that are expected as long as the carbon excess remains too low to produce dust grains in sufficient amount. Under these conditions the mass of the carbon-oxygen core can grow more than is generally predicted by stellar models. We discuss these new findings also in light of a new systematic follow-up investigation, based on Gaia EDR3, of evolved giants (13 carbon stars, 3 S stars and 4 M stars) belonging to intermediate-age open clusters.

Keywords

stars: evolutionstars: AGB and post-AGBstars: mass lossstars: windsoutflowsstars: white dwarfsstars: abundancesstars: atmospheres
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 16 , Symposium S366: The Origin of Outflows in Evolved Stars , November 2020 , pp. 216 - 221
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2022. Published by Cambridge University Press on behalf of International Astronomical Union

References

Bladh, S., Eriksson, K., Marigo, P., et al. 2019, A&A, 623, A119 Google Scholar
Bloecker, T. 1995, A&A, 297, 727 Google Scholar
Bressan, A., Marigo, P., Girardi, L., et al. 2012, MNRAS, 427, 127 CrossRefGoogle Scholar
Cantat-Gaudin, T., Anders, F., Castro-Ginard, A., et al. 2020, A&A, 640, A1 Google Scholar
Cummings, J. D., Kalirai, J. S., Tremblay, P.-E., et al. 2018, ApJ, 866, 21 CrossRefGoogle Scholar
Eriksson, K., Nowotny, W., Höfner, S., et al. 2014, A&A, 566, A95 Google Scholar
Ferrarotti, A. S. & Gail, H.-P. 2006, A&A, 447, 553 Google Scholar
Groenewegen, M. A. T. 2021, A&A, 654, A20 Google Scholar
Herwig, F. 2005, ARAA, 43, 435 CrossRefGoogle Scholar
Lambert, D. L., Gustafsson, B., Eriksson, K., et al. 1986, ApJS, 62, 373 CrossRefGoogle Scholar
McDonald, I. & Trabucchi, M. 2019, MNRAS, 484, 4678 CrossRefGoogle Scholar
Marigo, P., Bossini, D., Trabucchi, M., et al. 2022, ApJS, 258, 43 Google Scholar
Marigo, P., Cummings, J. D., Curtis, J. L., et al. 2020, Nature Astron., 4, 1102 CrossRefGoogle Scholar
Marigo, P., Bressan, A., Nanni, A., et al. 2013, MNRAS, 434, 488 CrossRefGoogle Scholar
Marigo, P. & Aringer, B. 2009, A&A, 508, 1539 Google Scholar
Mattsson, L., Wahlin, R., & Höfner, S. 2010, A&A, 509, A14 Google Scholar
Schöier, F. L. & Olofsson, H. 2001, A&A, 368, 969 Google Scholar
Vassiliadis, E. & Wood, P. R. 1993, ApJ, 413, 641 CrossRefGoogle Scholar