Dust and Gas around lambda Bootis Stars

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dc.creatorKamp, I.
dc.creatorHolweger, H.
dc.date1998-05-06
dc.date.accessioned2026-07-07T02:26:48Z
dc.date.available2026-07-07T02:26:48Z
dc.descriptionHigh-resolution spectra of lambda Bootis stars reveal the presence of circumstellar gas for example in the Ca K line. The example of the normal A star beta Pictoris shows, that the narrow stable absorption component in Ca K can be reproduced using appropriate disk models and a calcium underabundance in the circumstellar gas of a factor of ~30. Similar models are suggested for the group of metal-deficient lambda Bootis stars, but the observational material is still very poor.
dc.description5 pages, 3 figures, to appear in: Proc. of the 26th workshop of the European Working Group on CP stars, eds. P. North, A. Schnell and J. Ziznovsky, Contrib. Astr. Obs. Skalnate Pleso Vol. 27, No 3
dc.identifierhttps://arxiv.org/abs/astro-ph/9805053
dc.identifierhttp://arxiv.org/abs/astro-ph/9805053
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/12423
dc.subjectAstrophysics
dc.titleDust and Gas around lambda Bootis Stars
dc.typetext

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