Searching for chromospheric activity cycles in 1111 FGK-type stars from the HARPS GTO planet search program

The monitoring of many stars with magnetic cycles could help for a better understanding of their dependence with the stellar properties and the place occupied by the Sun in this context. Up to now, there are many questions related with the solar cycle (for example, amplitude, shape and length cycle...

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Detalles Bibliográficos
Autores principales: Flores, M., Jaque Arancibia, M. D., Saffe, C., Buccino, Andrea Paola, Miquelarena, P.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Ciencias Astronómicas
stars: solar-type
activity
chromospheres
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/169635
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-169635
record_format dspace
spelling I19-R120-10915-1696352024-11-08T18:52:24Z http://sedici.unlp.edu.ar/handle/10915/169635 Searching for chromospheric activity cycles in 1111 FGK-type stars from the HARPS GTO planet search program Flores, M. Jaque Arancibia, M. D. Saffe, C. Buccino, Andrea Paola Miquelarena, P. 2019 2024-09-04T17:35:20Z en Ciencias Astronómicas stars: solar-type activity chromospheres The monitoring of many stars with magnetic cycles could help for a better understanding of their dependence with the stellar properties and the place occupied by the Sun in this context. Up to now, there are many questions related with the solar cycle (for example, amplitude, shape and length cycle fluctuations), which could be addressed if the number of stellar activity cycles detected in solar-analogues and solar-twin stars were increased. In this work, we performed a systematic search for chromospheric activity cycles in a sample of 1111 FGK stars belonging to the HARPS GTO planet search program. As a result, we were able to analyse in detail the chromospheric activity for 600 of these objects. To this end, we calculate the Mount Wilson index for each object and then the corresponding temporal series were individually analysed by using the generalised Lomb-Scargle periodogram. El monitoreo de muchas estrellas con ciclos magnéticos podría ayudar a un mejor entendimiento de la dependencia de estos con las propiedades estelares y el lugar ocupado por el Sol en este contexto. Hoy en día, existen muchos interrogantes relacionados con el ciclo solar (por ejemplo, la amplitud, forma y las fluctuaciones en la longitud del ciclo), los cuales podrían ser tratados si se incrementara el número de ciclos de actividad detectados en estrellas análogas-solares y gemelas-solares. En este trabajo, realizamos una búsqueda sistemática de ciclos de actividad cromosféricos en una muestra de lili estrellas FGK pertenecientes al programa de búsqueda de planetas HARPS GTO. Como resultado, pudimos analizar detalladamente la actividad cromosférica para 600 de estos objetos. Para este fin, calculamos el índice de Mount Wilson para cada objeto y luego las series temporales correspondientes fueron individualmente analizadas mediante el periodograma de Lomb-Scargle generalizado. Asociación Argentina de Astronomía Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 81-83
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
stars: solar-type
activity
chromospheres
spellingShingle Ciencias Astronómicas
stars: solar-type
activity
chromospheres
Flores, M.
Jaque Arancibia, M. D.
Saffe, C.
Buccino, Andrea Paola
Miquelarena, P.
Searching for chromospheric activity cycles in 1111 FGK-type stars from the HARPS GTO planet search program
topic_facet Ciencias Astronómicas
stars: solar-type
activity
chromospheres
description The monitoring of many stars with magnetic cycles could help for a better understanding of their dependence with the stellar properties and the place occupied by the Sun in this context. Up to now, there are many questions related with the solar cycle (for example, amplitude, shape and length cycle fluctuations), which could be addressed if the number of stellar activity cycles detected in solar-analogues and solar-twin stars were increased. In this work, we performed a systematic search for chromospheric activity cycles in a sample of 1111 FGK stars belonging to the HARPS GTO planet search program. As a result, we were able to analyse in detail the chromospheric activity for 600 of these objects. To this end, we calculate the Mount Wilson index for each object and then the corresponding temporal series were individually analysed by using the generalised Lomb-Scargle periodogram.
format Articulo
Articulo
author Flores, M.
Jaque Arancibia, M. D.
Saffe, C.
Buccino, Andrea Paola
Miquelarena, P.
author_facet Flores, M.
Jaque Arancibia, M. D.
Saffe, C.
Buccino, Andrea Paola
Miquelarena, P.
author_sort Flores, M.
title Searching for chromospheric activity cycles in 1111 FGK-type stars from the HARPS GTO planet search program
title_short Searching for chromospheric activity cycles in 1111 FGK-type stars from the HARPS GTO planet search program
title_full Searching for chromospheric activity cycles in 1111 FGK-type stars from the HARPS GTO planet search program
title_fullStr Searching for chromospheric activity cycles in 1111 FGK-type stars from the HARPS GTO planet search program
title_full_unstemmed Searching for chromospheric activity cycles in 1111 FGK-type stars from the HARPS GTO planet search program
title_sort searching for chromospheric activity cycles in 1111 fgk-type stars from the harps gto planet search program
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/169635
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