Multicolor polarimetry of selected Be stars: 1990-93
نویسندگان
چکیده
منابع مشابه
Polarimetry of Binary Stars
Astronomical polarimetry is a powerful technique that can provide physical information sometimes difficult or impossible to obtain by any other type of observation. Almost every class of binary star can benefit from polarimetric observations: pre-main-sequence objects, close or contact binaries, mass-transfer systems, evolved binaries, cataclysmic variables, eclipsing binaries, etc. In these sy...
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We present the first radio observations of a sample of 13 optically and IR bright southern hemisphere classical Be stars made from the Australian Telescope Compact Array at 3.5cm and 6.3cm simultaneously. One star, δ Cen was detected at 3.5cm and a second, µ Cen was also thought to have been detected; further observations of this source are required to confirm this detection. No sources were de...
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We have used laser guide star adaptive optics and a near-infrared dual-channel imaging polarimeter to observe light scattered in the circumstellar environment of Herbig Ae/Be stars on scales of 100 to 300 astronomical units. We revealed a strongly polarized, biconical nebula 10 arc seconds (6000 astronomical units) in diameter around the star LkHalpha 198 and also observed a polarized jet-like ...
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We have carried out JHK polarimetric observations of eleven dusty young stars, by using the polarimeter module IRPOL2 with the near-IR camera UIST on the 3.8-m United Kingdom Infrared Telescope (UKIRT). Our sample targeted systems for which UKIRT-resolvable discs had been predicted by model fits to their spectral energy distributions. Our observations have confirmed the presence of extended pol...
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We present emission line polarimetry data and modelling relevant to the circumstellar geometry and kinematics around pre-main sequence stars. For a sample of both Herbig Ae/Be stars and T Tauri stars, we find that most show polarization changes across Hα, implying that flattened structures are common on the smallest scales – and over a range of stellar masses. We also present Monte Carlo calcul...
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of the Pacific
سال: 1994
ISSN: 0004-6280,1538-3873
DOI: 10.1086/133466