Dissecting Massive YSOs with Mid-Infrared Interferometry

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dc.creatorLinz, H.
dc.creatorHenning, Th.
dc.creatorStecklum, B.
dc.creatorMen'shchikov, A.
dc.creatorvan Boekel, R.
dc.creatorFollert, R.
dc.creatorFeldt, M.
dc.date2008-03-30
dc.date.accessioned2026-07-07T09:29:22Z
dc.date.available2026-07-07T09:29:22Z
dc.descriptionThe very inner structure of massive YSOs is difficult to trace. With conventional observational methods we often identify structures still several hundreds of AU in size. But we also need information about the innermost regions where the actual mass transfer onto the forming high-mass star occurs. An innovative way to probe these scales is to utilise mid-infrared interferometry. Here, we present first results of our MIDI GTO programme at the VLTI. We observed 10 well-known massive YSOs down to scales of 20 mas. We clearly resolve these objects which results in low visibilities and sizes in the order of 30 - 50 mas. Thus, with MIDI we can for the first time quantify the extent of the thermal emission from the warm circumstellar dust and thus calibrate existing concepts regarding the compactness of such emission in the pre-UCHII region phase. Special emphasis will be given to the BN-type object M8E-IR where our modelling is most advanced and where there is indirect evidence for a strongly bloated central star.
dc.description8 pages, 6 figures, proceedings contribution for the conference "Massive Star Formation: Observations confront Theory", held in September 2007 in Heidelberg, Germany; to appear in ASP Conf. Ser. 387, H. Beuther et al. (eds.)
dc.identifierhttps://arxiv.org/abs/0803.4341
dc.identifierhttp://arxiv.org/abs/0803.4341
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/157762
dc.subjectAstrophysics
dc.titleDissecting Massive YSOs with Mid-Infrared Interferometry
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