Rotação e energia de erupções em estrelas de tipos espectrais K e M observadas pelo satélite TESS
Under the development of new technologies, the Aerospace Engineering is increasingly improving its equipments in order to assist exploration that goes beyond our Heliopause. As an example of this we can cite the launch of the space artfact Transiting Exoplanet Survey Satellite (TESS) that has been...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/47670 |
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| Resumo: | Under the development of new technologies, the Aerospace Engineering is increasingly
improving its equipments in order to assist exploration that goes beyond our Heliopause.
As an example of this we can cite the launch of the space artfact Transiting Exoplanet Survey Satellite (TESS) that has been contributing with photometric data to Space
Sciences, like Astrophysics, with the aim of study various physical phenomena. As an
exemple, the magnetic activity of stars can be fundamental in forming the atmosphere of
exoplanets and impact their habitability as well as, it can trigger life in the orbit of type
K and M stars, which are considered to be cold and they are the most numerous in the
main sequence phase in the Hertzsprung-Russell diagram. Based on these investigations
and through statistical analysis of the behavior of stellar flares in relation to their classifcations, rotational periods and spectral subtype, this dissertation presents a study on
the variation of energy of stellar flares as a function of their rotational period in a new
sample of 679 TESS stars of spectral type K and M. None of the stars in this sample
showed a correlation between the energy of their surface stellar eruptions as a function
of their rotational period. Finally we present four scenarios involving the stars and their
stellar eruptions and theirs that can explain our results. |
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