Exploring Dust around HD 142527 down to 0.″025 (4 au) Using SPHERE/ZIMPOL
نویسندگان
چکیده
منابع مشابه
Near - Infrared Imaging Polarimetry of HD 142527 ?
Context. HD 142527 is a pre-transition disk with strong evidence for on-going planet formation. Recent observations show a disrupted disk with spiral arms, a dust-depleted inner cavity and the possible presence of gas streams driving gas from the outer disk towards the central star. Aims. We aim to derive the morphology of the disk, as well as the distribution and properties of the dust at its ...
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The dust shell around the evolved star HD 179821 has been detected in scattered light in near-IR imaging polarimetry observations. Here, we subtract the contribution of the unpolarized stellar light to obtain an intrinsic linear polarization of between 30 and 40 per cent in the shell which seems to increase with radial offset from the star. The J and K band data are modelled using a scattering ...
متن کاملMid - InfraRed imaging of the circumstellar dust around three Herbig Ae stars : HD 135344 , CQ Tau , HD 163296 ⋆
Aims. Planet formation has been known for many years to be tied to the spatial distribution of gas and dust in disks around young stars. To constrain planet formation models, imaging observations of protoplanetary disks are required. Methods. In this framework, we have undertaken a mid-infrared imaging survey of Herbig Ae stars, which are pre-main sequence stars of intermediate mass still surro...
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HST NICMOS PSF-subtracted coronagraphic observations of HD 181327 have revealed the presence of a ringlike disk of circumstellar debris seen in 1.1 m light scattered by the disk grains, surrounded by a diffuse outer region of lower surface brightness. The annular disk appears to be inclined by 31N7 1N6 from face-on, with the disk major-axis P.A. at 107 2 . The total 1.1 m flux density of the li...
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We present ISO observations made between 2.5 and 180 m of the nearby G0V dwarf HD 207129 taken as part of a large survey of nearby main-sequence stars in search of debris discs. HD 207129 emits radiation in excess of the photospheric flux density between at least 60 and 180 m. The infrared excess is explained by a disc of cold dust particles (25 to 50 K) and, to account for the absence of a sig...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2017
ISSN: 1538-3881
DOI: 10.3847/1538-3881/aa7560