%0 Conference Proceedings
%T The solar proxy κ1 Cet and the planetary habitability around the young Sun
%+ Univ. Federal do Rio G. do Norte
%+ Trinity College Dublin
%+ Institut de recherche en astrophysique et planétologie (IRAP)
%+ Obs. do Valongo
%+ Inst. de Astronom y Fica del Espacio
%+ Institut de Ciències de l'Espai
%+ University of Southern Queensland (USQ)
%+ Laboratoire Univers et Particules de Montpellier (LUPM)
%+ Institut für Astrophysik [Göttingen]
%A Do Nascimento, J.-D.
%A Vidotto, A. A.
%A Petit, Pascal
%A Folsom, C. P.
%A Porto de Mello, G. F.
%A Meibom, Søren
%A Abrevaya, X.C.
%A Ribas, I.
%A Castro, Matthieu
%A Marsden, S.
%A Morin, Julien
%A Jeffers, S. V.
%A Guinan, E.
%< sans comité de lecture
%Z LUPM:17-030
%( IAUS
%B IAUS 328: Living around Active Stars
%C Maresias, Brazil
%N 328
%P 338
%8 2016-10-17
%D 2016
%Z Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]Conference papers
%X Among the solar proxies, κ1 Cet, stands out as potentially having a mass very close to solar and a young age. We report magnetic field measurements and planetary habitability consequences around this star, a proxy of the young Sun when life arose on Earth. Magnetic strength was determined from spectropolarimetric observations and we reconstruct the large-scale surface magnetic field to derive the magnetic environment, stellar winds, and particle flux permeating the interplanetary medium around κ1 Cet. Our results show a closer magnetosphere and mass-loss rate 50 times larger than the current solar wind mass-loss rate when Life arose on Earth, resulting in a larger interaction via space weather disturbances between the stellar wind and a hypothetical young-Earth analogue, potentially affecting the habitability. Interaction of the wind from the young Sun with the planetary ancient magnetic field may have affected the young Earth and its life conditions.
%G English
%L hal-01769720
%U https://hal.science/hal-01769720
%~ IN2P3
%~ INSU
%~ METEO
%~ UNIV-TLSE3
%~ CNRS
%~ CNES
%~ OMP
%~ OMP-IRAP
%~ LUPM
%~ UNIV-MONTPELLIER
%~ LUPM_AS
%~ UNIV-UT3
%~ UT3-INP
%~ UT3-TOULOUSEINP
%~ UM-2015-2021