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The solar proxy...1 Cet and the planetary habitability around the young Sun

by de Mello, G F Porto , Guinan, E , Folsom, C , Abrevaya, X C , Vidotto, A A , Ribas, I , Castro, M , Marsden, S C , do Nascimento, J-D , Petit, P , Morin, J , Meibom, S , Jeffers, S V

in Astronomy / Earth / Habitability / Interplanetary medium / Magnetic fields / Magnetospheres / Solar magnetic field / Solar wind / Stellar winds / Sun / Wind

2016

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The solar proxy...1 Cet and the planetary habitability around the young Sun

by de Mello, G F Porto , Guinan, E , Folsom, C , Abrevaya, X C , Vidotto, A A , Ribas, I , Castro, M , Marsden, S C , do Nascimento, J-D , Petit, P , Morin, J , Meibom, S , Jeffers, S V

in Astronomy / Earth / Habitability / Interplanetary medium / Magnetic fields / Magnetospheres / Solar magnetic field / Solar wind / Stellar winds / Sun / Wind

2016

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The solar proxy...1 Cet and the planetary habitability around the young Sun

by de Mello, G F Porto , Guinan, E , Folsom, C , Abrevaya, X C , Vidotto, A A , Ribas, I , Castro, M , Marsden, S C , do Nascimento, J-D , Petit, P , Morin, J , Meibom, S , Jeffers, S V

in Astronomy / Earth / Habitability / Interplanetary medium / Magnetic fields / Magnetospheres / Solar magnetic field / Solar wind / Stellar winds / Sun / Wind

2016

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Journal Article

The solar proxy...1 Cet and the planetary habitability around the young Sun

de Mello, G F Porto,

Guinan, E,

Folsom, C,

Abrevaya, X C,

Vidotto, A A,

Ribas, I,

Castro, M,

Marsden, S C,

do Nascimento, J-D,

Petit, P,

Morin, J,

Meibom, S,

Jeffers, S V

2016

Overview

Among the solar proxies,[...]1 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[...]1 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.

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Publisher

Cambridge University Press

Subject

Astronomy

/ Earth

/ Habitability

/ Interplanetary medium

/ Magnetic fields

/ Magnetospheres

/ Solar magnetic field