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

We present a study of the relationship between galactic kinematics, flarerates, chromospheric activity, and rotation periods for a volume-complete,nearly all-sky sample of 219 single stars within 15 parsecs and with massesbetween 0.1$-$0.3 M$_{odot}l$ observed during the primary mission of TESS. Wefind all stars are consistent with a common value of $\alpha$=1.984 $\pm$ 0.019for the exponent of the flare frequency distribution. Using our measuredstellar radial velocities and Gaia astrometry, we determine galactic UVW spacemotions. We find 64% of stars are members of the Galactic thin disk, 5% belongto the thick disk, and for the remaining 31%, we cannot confidently assignmembership to either component. If we assume star formation has been constantin the thin disk for the past 8 Gyr, then based on the fraction that we observeto be active, we estimate the average age at which these stars transition fromthe saturated to the unsaturated flaring regime to be 2.4 $\pm$ 0.3 Gyr. Thisis consistent with the ages that we assign from galactic kinematics: We findthat stars with Prot $<$ 10 days have an age of 2.0 $\pm$ 1.2 Gyr, stars with10 $<$ Prot $\leq$ 90 days have an age of 5.6 $\pm$ 2.7 Gyr, and stars withProt $>$ 90 days have an age of 12.9 $\pm$ 3.5 Gyr. We find that the averageage of stars with Prot $<$ 10 days increases with decreasing stellar mass from0.6 $\pm$ 0.3 Gyr (0.2 - 0.3 M$_{odot}$) to 2.3 $\pm$ 1.3 Gyr (0.1--0.2M$_{odot}l$).

astrophysical journal/the astrophysical journal

Galactic Kinematics and Observed Flare Rates of a Volume-Complete Sample  of Mid-to-Late M-dwarfs: Constraints on the History of the Stellar Radiation  Environment of Planets Orbiting Low-mass Stars