Tracing large-scale structures in circumstellar disks with ALMA
نویسندگان
چکیده
منابع مشابه
Vortices in Circumstellar Disks
We discuss the physics of vortices in the circumstellar disks associated with young stellar objects. We elucidate the basic physical properties of these localized storm systems. In particular, we consider point vortices, linear vortices, the eeects of self-gravity, magnetic elds, and nonlinear aspects of the problem. We nd that these vortices can exist in many diierent forms in the disks of you...
متن کاملAn Alma Continuum Survey of Circumstellar Disks in the Upper Scorpius Ob Association
We present ALMA 880μm continuum observations of 20 K and M-type stars in the Upper Scorpius OB association that are surrounded by protoplanetary disks. These data are used to measure the dust content in disks around low mass stars (0.1-1.6M⊙) at a stellar age of 5-11Myr. Thirteen sources were detected in the 880μm dust continuum at ≥ 3σ with inferred dust masses between 0.3 and 52M⊕. The dust m...
متن کاملAlma Observations of Circumstellar Disks in the Upper Scorpius Ob Association
We present ALMA observations of 106 G-, K-, and M-type stars in the Upper Scorpius OB Association hosting circumstellar disks. With these data, we measure the 0.88 mm continuum and CO J=3–2 line fluxes of disks around low-mass (0.14–1.66Me) stars at an age of 5–11Myr. Of the 75 primordial disks in the sample, 53 are detected in the dust continuum and 26 in CO. Of the 31 disks classified as de...
متن کاملLarge dust grains in the inner region of circumstellar disks
Context. Simple geometrical ring models account well for near-infrared interferometric observations of dusty disks surrounding pre-main sequence stars of intermediate mass. Such models demonstrate that the dust distribution in these disks has an inner hole and puffed-up inner edge consistent with theoretical expectations. Aims. In this paper, we reanalyze the available interferometric observati...
متن کاملObservations of Circumstellar Disks
The imaging of disks around young stars presents extreme challenges in high dynamic range, angular resolution, and sensitivity. Recent instrumental advances have met these challenges admirably, leading to a marked increase in imaging discoveries. These have opened up a new era in studies of the origin of planetary systems. Questions about our own solar system’s formation, and of the prevalence ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2013
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201220390