Magneto-asteroseismic study of ι Lib
International audience About 10 % of early-type stars host a large-scale magnetic field, which is expected to affect their physical conditions. However, only a limited amount of observations exist to corroborate the extent of the effects of the large-scale magnetic field. Therefore, we searched for...
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ftccsdartic:oai:HAL:hal-02323557v1 2023-05-15T18:50:46+02:00 Magneto-asteroseismic study of ι Lib Buysschaert, B. Neiner, Coralie Aerts, C. White, T. R. Pope, B. J. S. Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Instituut voor Sterrenkunde Leuven Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven) Bordeaux, France 2018-07-03 https://hal.archives-ouvertes.fr/hal-02323557 en eng HAL CCSD hal-02323557 https://hal.archives-ouvertes.fr/hal-02323557 BIBCODE: 2018sf2a.conf.369B SF2A-2018: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics https://hal.archives-ouvertes.fr/hal-02323557 SF2A-2018: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, Jul 2018, Bordeaux, France stars: early-type stars: magnetic field stars: oscillations stars: rotation [SDU]Sciences of the Universe [physics] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR] info:eu-repo/semantics/conferenceObject Conference papers 2018 ftccsdartic 2021-12-05T01:58:20Z International audience About 10 % of early-type stars host a large-scale magnetic field, which is expected to affect their physical conditions. However, only a limited amount of observations exist to corroborate the extent of the effects of the large-scale magnetic field. Therefore, we searched for magnetic pulsating early-type stars, as the stellar pulsations provide an exclusive observational window to the internal stellar properties. In this work, we have analysed the ESPaDOnS and Narval spectropolarimetry to characterize the large-scale magnetic field of ι Lib and derive the star's rotation period. In addition, we investigated the K2 light curve of ι Lib with the aim to detect possible pulsation mode frequencies. Two of the low-amplitude frequencies fall in the frequency domain of g modes. However, more observations are needed to confirm these to be actual g modes and whether they originate from the magnetic early-type star in the ι Lib binary system. Conference Object narval narval Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
stars: early-type stars: magnetic field stars: oscillations stars: rotation [SDU]Sciences of the Universe [physics] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR] |
spellingShingle |
stars: early-type stars: magnetic field stars: oscillations stars: rotation [SDU]Sciences of the Universe [physics] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR] Buysschaert, B. Neiner, Coralie Aerts, C. White, T. R. Pope, B. J. S. Magneto-asteroseismic study of ι Lib |
topic_facet |
stars: early-type stars: magnetic field stars: oscillations stars: rotation [SDU]Sciences of the Universe [physics] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR] |
description |
International audience About 10 % of early-type stars host a large-scale magnetic field, which is expected to affect their physical conditions. However, only a limited amount of observations exist to corroborate the extent of the effects of the large-scale magnetic field. Therefore, we searched for magnetic pulsating early-type stars, as the stellar pulsations provide an exclusive observational window to the internal stellar properties. In this work, we have analysed the ESPaDOnS and Narval spectropolarimetry to characterize the large-scale magnetic field of ι Lib and derive the star's rotation period. In addition, we investigated the K2 light curve of ι Lib with the aim to detect possible pulsation mode frequencies. Two of the low-amplitude frequencies fall in the frequency domain of g modes. However, more observations are needed to confirm these to be actual g modes and whether they originate from the magnetic early-type star in the ι Lib binary system. |
author2 |
Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Instituut voor Sterrenkunde Leuven Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven) |
format |
Conference Object |
author |
Buysschaert, B. Neiner, Coralie Aerts, C. White, T. R. Pope, B. J. S. |
author_facet |
Buysschaert, B. Neiner, Coralie Aerts, C. White, T. R. Pope, B. J. S. |
author_sort |
Buysschaert, B. |
title |
Magneto-asteroseismic study of ι Lib |
title_short |
Magneto-asteroseismic study of ι Lib |
title_full |
Magneto-asteroseismic study of ι Lib |
title_fullStr |
Magneto-asteroseismic study of ι Lib |
title_full_unstemmed |
Magneto-asteroseismic study of ι Lib |
title_sort |
magneto-asteroseismic study of ι lib |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.archives-ouvertes.fr/hal-02323557 |
op_coverage |
Bordeaux, France |
genre |
narval narval |
genre_facet |
narval narval |
op_source |
SF2A-2018: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics https://hal.archives-ouvertes.fr/hal-02323557 SF2A-2018: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, Jul 2018, Bordeaux, France |
op_relation |
hal-02323557 https://hal.archives-ouvertes.fr/hal-02323557 BIBCODE: 2018sf2a.conf.369B |
_version_ |
1766244528829759488 |