Enhancement of Lithium in Red Clump Stars by Neutrino Magnetic Moments

Kanji Mori; Motohiko Kusakabe; A. Baha Balantekin; Toshitaka Kajino; Michael A. Famiano

doi:10.1051/epjconf/202226011016

Enhancement of Lithium in Red Clump Stars by Neutrino Magnetic Moments

Kanji Mori^*
, Motohiko Kusakabe
, A. Baha Balantekin
, Toshitaka Kajino
, Michael A. Famiano

^*Corresponding author for this work

School of Physics

Fukuoka University
National Astronomical Observatory of Japan
Beihang University
University of Wisconsin-Madison
The University of Tokyo
Western Michigan University

Research output: Contribution to conference › Paper › peer-review

Abstract

A recent spectroscopic survey has shown that the lithium abundances in low-mass red-clump stars are higher than theoretical prediction. Motivated by their finding, we implemented effects of additional energy losses induced by neutrino magnetic moments on stellar evolution models. It is found that the lithium abundances in red giants increase because the finite magnetic moments of neutrinos enhance the efficiency of deep mixing and ⁷Be is conveyed from the hydrogen burning shell to the convective envelope. The results motivate further studies on the effects of non-standard energy losses on the surface compositions of low-mass red giants and red-clump stars.

Original language	English
DOIs	https://doi.org/10.1051/epjconf/202226011016
State	Published - 24 Feb 2022
Event	16th Symposium on Nuclei in the Cosmos, NIC-XVI 2021 - Chengdu, China Duration: 21 Sep 2021 → 25 Sep 2021

Conference

Conference	16th Symposium on Nuclei in the Cosmos, NIC-XVI 2021
Country/Territory	China
City	Chengdu
Period	21/09/21 → 25/09/21

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10.1051/epjconf/202226011016

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title = "Enhancement of Lithium in Red Clump Stars by Neutrino Magnetic Moments",

abstract = "A recent spectroscopic survey has shown that the lithium abundances in low-mass red-clump stars are higher than theoretical prediction. Motivated by their finding, we implemented effects of additional energy losses induced by neutrino magnetic moments on stellar evolution models. It is found that the lithium abundances in red giants increase because the finite magnetic moments of neutrinos enhance the efficiency of deep mixing and 7Be is conveyed from the hydrogen burning shell to the convective envelope. The results motivate further studies on the effects of non-standard energy losses on the surface compositions of low-mass red giants and red-clump stars.",

author = "Kanji Mori and Motohiko Kusakabe and Balantekin, \{A. Baha\} and Toshitaka Kajino and Famiano, \{Michael A.\}",

note = "Publisher Copyright: {\textcopyright} The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).; 16th Symposium on Nuclei in the Cosmos, NIC-XVI 2021 ; Conference date: 21-09-2021 Through 25-09-2021",

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doi = "10.1051/epjconf/202226011016",

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TY - CONF

T1 - Enhancement of Lithium in Red Clump Stars by Neutrino Magnetic Moments

AU - Mori, Kanji

AU - Kusakabe, Motohiko

AU - Balantekin, A. Baha

AU - Kajino, Toshitaka

AU - Famiano, Michael A.

N1 - Publisher Copyright: © The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).

PY - 2022/2/24

Y1 - 2022/2/24

N2 - A recent spectroscopic survey has shown that the lithium abundances in low-mass red-clump stars are higher than theoretical prediction. Motivated by their finding, we implemented effects of additional energy losses induced by neutrino magnetic moments on stellar evolution models. It is found that the lithium abundances in red giants increase because the finite magnetic moments of neutrinos enhance the efficiency of deep mixing and 7Be is conveyed from the hydrogen burning shell to the convective envelope. The results motivate further studies on the effects of non-standard energy losses on the surface compositions of low-mass red giants and red-clump stars.

AB - A recent spectroscopic survey has shown that the lithium abundances in low-mass red-clump stars are higher than theoretical prediction. Motivated by their finding, we implemented effects of additional energy losses induced by neutrino magnetic moments on stellar evolution models. It is found that the lithium abundances in red giants increase because the finite magnetic moments of neutrinos enhance the efficiency of deep mixing and 7Be is conveyed from the hydrogen burning shell to the convective envelope. The results motivate further studies on the effects of non-standard energy losses on the surface compositions of low-mass red giants and red-clump stars.

UR - https://www.scopus.com/pages/publications/85183895363

U2 - 10.1051/epjconf/202226011016

DO - 10.1051/epjconf/202226011016

M3 - 论文

AN - SCOPUS:85183895363

T2 - 16th Symposium on Nuclei in the Cosmos, NIC-XVI 2021

Y2 - 21 September 2021 through 25 September 2021

ER -

Enhancement of Lithium in Red Clump Stars by Neutrino Magnetic Moments

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