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Article . 2017
License: CC BY NC SA
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Posible influencia de exoplanetas sobre la actividad estelar: Nuevos resultados (parte II)

Authors: Flores Trivigno, Matias Gaston; Collado, Ana Elisa; Jaque Arancibia, Marcelo Daniel; Saffe, Carlos; Buccino, Andrea Paola;

Posible influencia de exoplanetas sobre la actividad estelar: Nuevos resultados (parte II)

Abstract

El objetivo final de este trabajo consiste en analizar 2 fenomenos posiblemente relacionados y a la vez muy discutidos en la literatura. Por un lado, la diferencia en los niveles de actividad mostrados por las estrellas con y sin planetas. Por otro lado, el exceso en la reduccion de Litio (Li) presentado por las estrellas con planetas cuando se las compara con estrellas de similares caractersticas que no albergan planetas. Para alcanzar el objetivo propuesto, se ha divido el trabajo en 3 etapas. De esta manera, en esta segunda contribucion presentamos un analisis de los indices de actividad calculados para la muestra total de objetos. Para tal fin, utilizamos espectros de alta resolucion (R = 115 000) de 1004 estrellas FGK tomados con el espectrografo HARPS (High Accuracy Radial velocity Planet Searcher), instalado en el telescopio de 3.6 m del ESO.

Our main aim of this work is to analyze 2 phenomena possibly related and at the same time very discussed in the literature. On the one hand, the difference in the activity levels shown by stars with and without planets. On the other hand, the excess of Lithium (Li) depletion presented by stars with planets when they are compared to stars with similar characteristics that do not host planets. To reach our main aim, the work has been divided into 3 stages. Thus, in this second contribution we present an analysis of the activity indexes calculated for the whole sample. To do so, we used high resolution spectra (R ≈ 115 000) of 1004 FGK stars taken with the HARPS (High Accuracy Radial Velocity Planet Searcher) spectrograph, installed in the 3.6–m ESO telescope.

Fil: Jaque Arancibia, Marcelo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina

Fil: Flores Trivigno, Matias Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina

Fil: Buccino, Andrea Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina

Fil: Collado, Ana Elisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina

Fil: Saffe, Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina

Country
Argentina
Keywords

STARS: ACTIVITY, https://purl.org/becyt/ford/1.3, PLANETS AND SATELLITES: GENERAL, https://purl.org/becyt/ford/1, STARS: ABUNDANCES

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green