Activity and Kinematics of M and L Dwarfs

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dc.creatorGizis, John E.
dc.date2000-10-25
dc.date.accessioned2026-07-07T01:56:13Z
dc.date.available2026-07-07T01:56:13Z
dc.descriptionI discuss observations of two traditional age indicators, chromospheric activity and kinematics, in late-M and L dwarfs near the hydrogen-burning limit. The frequency and strength of chromospheric activity disappears rapidly as a function of temperature over spectral types M8-L4. There is evidence that young late-M and L dwarfs have weaker activity than older ones, the opposite of the traditional stellar age-activity relation. The kinematics of L dwarfs confirm that lithium L dwarfs are younger than non-lithium dwarfs.
dc.descriptionto appear in proceedings of Ultracool Dwarf Stars: Surveys, Properties and Spectral Classification (Lecture Notes in Physics), eds. Jones and Steele. 12 pages
dc.identifierhttps://arxiv.org/abs/astro-ph/0010528
dc.identifierhttp://arxiv.org/abs/astro-ph/0010528
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/1920
dc.subjectAstrophysics
dc.titleActivity and Kinematics of M and L Dwarfs
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