Long-term evolution of FU Orionis objects at infrared wavelengths
نویسندگان
چکیده
منابع مشابه
Long-term evolution of FU Orionis objects at infrared wavelengths
We investigate the brightness evolution of 7 FU Orionis systems in the 1−100μm wavelength range using data from the Infrared Space Observatory (ISO). The ISO measurements were supplemented with 2MASS and MSX observations performed in the same years as the ISO mission (1995−98). The spectral energy distributions (SEDs) based on these data points were compared with earlier ones derived from the I...
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We present the first infrared interferometric observations of a young stellar object with a spatial projected resolution better than 2 AU. The observations were obtained with the Palomar Testbed Interferometer. FU Ori exhibits a visibility of V 2 = 0.72 ± 0.07 for a 103 ± 5 m projected baseline at λ = 2.2µm. The data are consistent on the spatial scale probed by PTI both with a binary system sc...
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We show that if FU Orionis objects harbour hot Jupiters embedded in their discs, the resulting non-axisymmetric dissipation profile in the disc would be manifest as time-dependent distortions in the absorption line profiles of these objects. In order to affect the infrared line profiles, planets must lie within ∼ 0.5 au of the central star, whereas only planets within ∼ 0.1 au would influence t...
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The evolution of the orbiting debris population larger than 1 mm has been simulated for 100 yr assuming four diierent space policy scenarios. The study was made possible by the development of two speciic software codes, including the relevant source and sink mechanisms and several model options. A sensitivity analysis has shown that the results are relatively insensitive to the adoption of diie...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2004
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20040315