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The ancient main-sequence solar proxy HIP 102152 unveils the activity and rotational fate of our Sun
We present a detailed analysis of the possible future Sun's rotational evolution scenario based on the 8 Gyr-old solar twin HIP 102152. Using HARPS high-cadence observations (and TESS light curves), we analyzed the modulation of a variety of activity
Externí odkaz:
http://arxiv.org/abs/2003.13871
Autor:
Galarza, Jhon Yana, Meléndez, Jorge, Lorenzo-Oliveira, Diego, Valio, Adriana, Reggiani, Henrique, Carlos, Marilia, Ponte, Geisa, Spina, Lorenzo, Haywood, Raphaëlle D., Gandolfi, Davide
Spectroscopic equilibrium allows us to obtain precise stellar parameters in Sun-like stars. It relies on the assumption of the iron excitation and ionization equilibrium. However, several works suggest that magnetic activity may affect chemical abund
Externí odkaz:
http://arxiv.org/abs/1910.01040
Autor:
Lorenzo-Oliveira, Diego, Meléndez, Jorge, Galarza, Jhon Yana, Ponte, Geisa, Santos, Leonardo A. dos, Spina, Lorenzo, Bedell, Megan, Ramírez, Iván, Bean, Jacob L., Asplund, Martin
The stellar Rotation $vs.$ Age relation is commonly considered as a useful tool to derive reliable ages for Sun-like stars. However, in the light of \kepler\ data, the presence of apparently old and fast rotators that do not obey the usual gyrochrono
Externí odkaz:
http://arxiv.org/abs/1903.02630
Akademický článek
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Autor:
Ponte, Geisa Teixeira da
Publikováno v:
Biblioteca Digital de Teses e Dissertações do Mackenzie
Universidade Presbiteriana Mackenzie (MACKENZIE)
instacron:MACKENZIE
Universidade Presbiteriana Mackenzie (MACKENZIE)
instacron:MACKENZIE
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Fundação de Amparo a Pesquisa do Estado de São Paulo Fundo Mackenzie de Pesquisa The variability seen in the brightness of stars on timescale of days is often attributed to the crossi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::3cb6009b971eb3c849dabc2554d1d91c
https://dspace.mackenzie.br/handle/10899/28426
https://dspace.mackenzie.br/handle/10899/28426
Akademický článek
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Autor:
Yana Galarza, Jhon, López-Valdivia, Ricardo, Lorenzo-Oliveira, Diego, Reggiani, Henrique, Meléndez, Jorge, Gamarra-Sánchez, Daniel, Flores, Matias, Portal-Rivera, Jerry, Miquelarena, Paula, Ponte, Geisa, Schlaufman, Kevin C, Vargas Auccalla, Teófilo
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Jun2021, Vol. 504 Issue 2, p1873-1887, 15p
Autor:
Yana Galarza, Jhon, Meléndez, Jorge, Lorenzo-Oliveira, Diego, Valio, Adriana, Reggiani, Henrique, Carlos, Marília, Ponte, Geisa, Spina, Lorenzo, Haywood, Raphaëlle D, Gandolfi, Davide
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters; Nov2019, Vol. 490 Issue 1, pL86-L90, 5p