Millimeter Observations of the Tw Hya System
نویسنده
چکیده
We present millimeter wavelength aperture synthesis observations of TW Hya obtained with the Very Large Array and the BIMA array. Images at 7 mm resolve the dusty circumstellar disk surrounding the star, probing structure to size scales of 0: 00 1 (5 AU). We describe how the long wavelength spectrum and resolved millimeter images constrain the radial distribution of disk surface density.
منابع مشابه
Disks around the Young Stars Tw Hya and Hd 100546 Imaged at 3.4 Millimeters with the Australia Telescope Compact Array
We present observations of the young stars TW Hya and HD 100546 made with the Australia Telescope Compact Array at 89 GHz with ∼ 2 ′′ resolution and ∼ 3 mJy continuum sensitivity. Compact thermal dust continuum emission is detected from disks surrounding both stars. HD 100546 also shows hints of extended emission, presumably a residual protostellar envelope, which is also visible in scattered l...
متن کاملA search for evolved dust in Herbig Ae stars
We present observations of six isolated, pre-main-sequence, intermediate mass stars selected for shallow spectra at submillimeter wavelengths at 1.3, 2.6, 7.0, and 36 millimeters from the IRAM PdBI and the VLA. We analyze the new observations of these stars (HD34282, HD35187, HD142666, HD143006, HD150193, HD163296) together with similar observations of three additional stars from the literature...
متن کاملLine Emission from Gas in Optically Thick Dust Disks around Young Stars
We present self-consistent models of gas in optically-thick dusty disks and calculate its thermal, density and chemical structure. The models focus on an accurate treatment of the upper layers where line emission originates, and at radii & 0.7 AU. Although our models are applicable to stars of any mass, we present here only results around ∼ 1M⊙ stars where we have varied dust properties, X-ray ...
متن کاملHydrocarbon Emission Rings in Protoplanetary Disks Induced by Dust Evolution
We report observations of resolved C2H emission rings within the gas-rich protoplanetary disks of TWHya and DMTau using the Atacama Large Millimeter Array. In each case the emission ring is found to arise at the edge of the observable disk of millimeter-sized grains (pebbles) traced by submillimeter-wave continuum emission. In addition, we detect a C3H2 emission ring with an identical spatial...
متن کاملSpatially Resolving the Inner Disk of TW Hya
We present Keck Interferometer observations of TW Hya that spatially resolve its emission at 2 µm wavelength. Analyzing these data together with existing K-band veiling and near-infrared photometric measurements, we conclude that the inner disk consists of optically thin, sub-micron-sized dust extending from ∼ 4 AU to within 0.06 AU of the central star. The inner disk edge may be magnetospheric...
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