Imaging Polarimetric Observations of a New Circumstellar Disk System
نویسندگان
چکیده
Few circumstellar disks have been observed directly. Here we use sensitive differential polarimetric techniques to overcome atmospheric speckle noise in order to image the circumstellar material around HD 169142. The detected envelope or disk is considerably smaller than expectations based on the measured strength of the farIR excess from this system. Subject headings: circumstellar matter — techniques: polarimetric
منابع مشابه
Polarimetric Observations of a New Circumstellar Disk System
Few circumstellar disks have been directly observed. Here we use sensitive differential polarimetric techniques to overcome atmospheric speckle noise in order to image the circumstellar material around HD 169142. The detected envelope or disk is considerably smaller than expectations based on the measured strength of the far-IR excess from this system.
متن کاملNACO Polarimetric Differential Imaging of TW Hya : A Sharp Look at the Closest T Tauri Disk ⋆
We present high-contrast imaging data on the disk of the classical T Tauri star TW Hya. The images were obtained through the polarimetric differential imaging technique with the adaptive optics system NACO. Our commissioning data show the presence of polarized disk emission between 0.1 ′′ and 1.4 ′′ from the star. We derive the first Ks-band radial polarized intensity distribution. We show that...
متن کاملC . Hines ( Space Science Institute ) & Glenn Schneider ( Steward Observatory )
We present results from our recent program (GO 9768: Hines PI ) to evaluate, calibrate, and enable for commissioning, high-contrast near-IR imaging polarimetry via coronagraphy with the Near Infrared Camera & Multi-Object Spectrometer (NICMOS) onboard the Hubble Space Telescope (HST). We find that the NICMOS Camera 2 polarizing filters can be used efficiently and effectively in combination with...
متن کاملMorphology of the very inclined debris disk around HD 32297⋆
Context. Direct imaging of circumstellar disks at high angular resolution is mandatory to provide morphological information that constrains their properties, in particular the spatial distribution of dust. For a long time, this challenging objective was, in most cases, only within the realm of space telescopes from the visible to the infrared. New techniques combining observing strategy and dat...
متن کاملMicrolensing of Circumstellar Disks
We investigate the microlensing effects on a source star surrounded by a circumstellar disk, as a function of wavelength. In the midand far-infrared, where the emission of the system is dominated by the cold dusty disk, the microlensing light curve encodes the geometry and surface brightness profile of the disk. For a system located at the Galactic center, we find typical magnifications to be o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2001