Keck adaptive optics observations of TW Hydrae Association members

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dc.creatorMacintosh, Bruce
dc.creatorMax, Claire
dc.creatorZuckerman, Ben
dc.creatorBecklin, Eric E.
dc.creatorKaisler, Denise
dc.creatorLowrance, Patrick
dc.creatorWeinberger, Alycia
dc.creatorChristou, Julian
dc.creatorSchneider, Glenn
dc.creatorActon, Scott
dc.date2001-06-26
dc.date.accessioned2026-07-07T01:59:05Z
dc.date.available2026-07-07T01:59:05Z
dc.descriptionAdaptive optics (AO) on 8-10 m telescopes is an enormously powerful tool for studying young nearby stars. It is especially useful for searching for companions. Using AO on the 10-m W.M. Keck II telescope we have measured the position of the brown dwarf companion to TWA5 and resolved the primary into an 0.055 arcsecond double. Over the next several years follow-up astrometry should permit an accurate determination of the masses of these young stars. We have also re-observed the candidate extrasolar planet TWA6B, but measurements of its motion relative to TWA6A are inconclusive. We are carrying out a search for new planetary or brown dwarf companions to TWA stars and, if current giant planet models are correct, are currently capable of detecting a 1 Jupiter-mass companion at ~1 arcsecond and a 5 Jupiter-mass companion at ~0.5 arcsecon around a typical TWA member.
dc.description6 pages, 4 inline eps figues. To appear in "Young Stars Near Earth: Progress and Prospects", ASP conference series, R. Jayawardhana and T. Green eds. uses pasp style file "newpasp.sty" (included)
dc.identifierhttps://arxiv.org/abs/astro-ph/0106479
dc.identifierhttp://arxiv.org/abs/astro-ph/0106479
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/2967
dc.subjectAstrophysics
dc.titleKeck adaptive optics observations of TW Hydrae Association members
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