Resolving the radio nebula around beta Lyrae

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dc.creatorUmana, G.
dc.creatorMaxted, P. F. L.
dc.creatorTrigilio, C.
dc.creatorFender, R. P.
dc.creatorLeone, F.
dc.creatorYerli, S. K.
dc.date2000-04-21
dc.date2000-05-23
dc.date.accessioned2026-07-07T01:53:15Z
dc.date.available2026-07-07T01:53:15Z
dc.descriptionIn this paper we present high spatial resolution radio images of the puzzling binary system beta Lyrae obtained with MERLIN at 5 GHz. We find a nebula surrounding the binary with a brightness temperature of 11000+-700K approximately 40AU across. This definitively confirms the thermal origin of the radio emission, which is consistent with emission from the wind of the B6-8II component (mass loss of order of 10^-7 Msun per year), ionized by the radiation field of the hotter companion. This nebula, surrounding the binary, is the proof that beta Layrae evolved in a non-conservative way, i. e. not all the mass lost by the primary is accretted by the secondary, and present measurements indicate that almost 0.015Msun had been lost from the system since the onset of the Roche lobe overflow phase. Moreover, the nebula is aligned with the jet-like structures inferred from recent optical measurements, indicating a possible connection among them.
dc.description5 pages, 2 figures. Accepted for publication in A&A
dc.identifierhttps://arxiv.org/abs/astro-ph/0004306
dc.identifierhttp://arxiv.org/abs/astro-ph/0004306
dc.identifierA&A 358, 229, 2000
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/899
dc.subjectAstrophysics
dc.titleResolving the radio nebula around beta Lyrae
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