Shadows and cavities in protoplanetary disks: HD 163296, HD 141569A, and HD 150193A in polarized light
نویسندگان
چکیده
منابع مشابه
Cometary Dust in the Debris Disks of Hd 31648 and Hd 163296: Two " Baby " Β Pics
The debris disks surrounding the pre-main sequence stars HD 31648 and HD 163296 were observed spectroscopically between 3 and 14 μm. Both possess a silicate emission feature at 10 μm which resembles that of the star β Pictori and those observed in solar system comets. The structure of the band is consistent with a mixture of olivine and pyroxene material, plus an underlying continuum of unspeci...
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With 2D hydrodynamic simulations we explore two scenarios for exciting the observed spiral structure in the large ∼ 400AU sized debris disks of HD 100546 and HD 141569A. We consider spiral structure driven by an external bound low mass planet or star and that excited by a previous stellar encounter or flyby. The spiral structure of HD 141569A is fairly well reproduced with tidal perturbations f...
متن کاملCometary Dust in the Debris Disks of HD 31648 and HD 163296 : Two \ Baby "
The debris disks surrounding the pre-main sequence stars HD 31648 and HD 163296 were observed spectroscopically between 3 and 14 m. Both possess a silicate emission feature at 10 m which resembles that of the star Pictoris and those observed in solar system comets. The structure of the band is consistent with a mixture of olivine and pyroxene material, plus an underlying continuum of unspeciied...
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The morphology of the material surrounding Her-big Ae/Be stars is still a topic of debate. Distinct models with different geometry and optical thickness are found to be compatible with the observed IR excess. This indicates that it is not possible to resolve this question by only looking at the fluxes. Therefore, this paper compares three known Herbig Ae/Be stars with very similar energy distri...
متن کاملFirst Scattered Light Images of Debris Disks around Hd 53143 and Hd 139664
We present the first scattered light images of debris disks around a K star (HD 53143) and an F star (HD 139664) using the coronagraphic mode of the Advanced Camera for Surveys (ACS) aboard the Hubble Space Telescope (HST). With ages 0.3 1 Gyr, these are among the oldest optically detected debris disks. HD 53143, viewed ∼45 from edge-on, does not show radial variation in disk structure and has ...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2014
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201424262