X-ray emission from old and intermediate age brown dwarfs

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dc.creatorStelzer, B.
dc.creatorNeuhaeuser, R.
dc.date2002-06-17
dc.date.accessioned2026-07-07T02:03:59Z
dc.date.available2026-07-07T02:03:59Z
dc.descriptionAccording to the paradigm of solar-type dynamo action brown dwarfs should not exhibit magnetic activity as they are fully convective. Indeed, Halpha observations of ultracool field dwarfs indicate a decline of activity setting in near the substellar limit. X-ray emission traditionally serves as another means to examine magnetic activity on stars. The substellar regime can now be accessed with the new generation of X-ray instruments onboard XMM-Newton and Chandra. We report on two recent XMM-Newton observations of brown dwarfs in the Pleiades cluster and in the field aiming to constrain the age and effective temperature dependence of X-ray emission from substellar objects.
dc.description4 pages, to appear in proceedings of the IAU Symposium 211 on "Brown Dwarfs", ASP Conference Series
dc.identifierhttps://arxiv.org/abs/astro-ph/0206284
dc.identifierhttp://arxiv.org/abs/astro-ph/0206284
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/4583
dc.subjectAstrophysics
dc.titleX-ray emission from old and intermediate age brown dwarfs
dc.typetext

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