English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Aims. The main goal of this work is to measure rotation periods of the M-typedwarf stars being observed by the CARMENES exoplanet survey to help distinguishradial-velocity signals produced by magnetic activity from those produced byexoplanets. Rotation periods are also fundamental for a detailed study of therelation between activity and rotation in late-type stars. Methods. We look forsignificant periodic signals in 622 photometric time series of 337 bright,nearby M dwarfs obtained by long-time baseline, automated surveys (MEarth,ASAS, SuperWASP, NSVS, Catalina, ASAS-SN, K2, and HATNet) and for 20 starswhich we obtained with four 0.2-0.8 m telescopes at high geographicallatitudes. Results. We present 142 rotation periods (73 new) from 0.12 d to 133d and ten long-term activity cycles (six new) from 3.0 a to 11.5 a. We compareour determinations with those in the existing literature; we investigate thedistribution of P rot in the CARMENES input catalogue,the amplitude ofphotometric variability, and their relation to vsin i and pEW(Halfa); and weidentify three very active stars with new rotation periods between 0.34 d and23.6 d.

CARMENES input catalogue of M dwarfs IV. New rotation periods from photometric time series