IbaƱez Bustos, R. V.
Buccino, A. P.
Mauas, P. J. D.
2021-02-25
<p>M dwarf stars are prime targets in current and upcoming exoplanet surveys, due to their ubiquity in the<br>
solar neighborhood and the high occurrence of small exoplanets in their habitable zones. However, their<br>
magnetic activity could hinder the detection of orbiting planets and also seriously contrains the<br>
habitability of the terrestrial planets.<br>
During the last decade, new debates about the mechanism responsible for the magnetic activity of M stars<br>
have emerged in the dynamo theory. Information on the long-term activity of partially and fully<br>
convective M stars would allow us to understand whether their underlying dynamo is responsible for the<br>
detected activity cycles.<br>
Since 1999, the HKα Project is operating in the Argentinian observatory CASLEO (Complejo<br>
Astronómico El Leoncito), exclusively dedicated to observe a set of F3V to M5.5V stars. To date, our<br>
database presents more than 6000 mid-resolution spectra with a wavelength range from 389 to 669 nm,<br>
which constitutes an ideal dataset to study long-term activity.<br>
In the present work, we show the first evidence of activity cycles for a fully convective M<br>
stars, Gl 729, obtained from reliabale time series of 20 year length.</p>
https://doi.org/10.5281/zenodo.4561938
oai:zenodo.org:4561938
Zenodo
https://zenodo.org/communities/coolstars20half
https://doi.org/10.5281/zenodo.4561937
info:eu-repo/semantics/openAccess
Creative Commons Attribution 2.0 Generic
https://creativecommons.org/licenses/by/2.0/legalcode
low-mass stars
late-type stars
stellar activity
~20 yr of stellar activity for M stars
info:eu-repo/semantics/conferencePoster