H2D+ line emission in Proto-Planetary Disks
نویسندگان
چکیده
منابع مشابه
H2D+ line emission in Proto-Planetary Disks
Context. Previous studies have indicated that the 372.4 GHz ground transition of ortho-H2D might be a powerful probe of Proto-Planetary Disks. The line could be especially suited for study of the disk mid-plane, where the bulk of the mass resides and where planet formation takes place. Aims. Provide detailed theoretical predictions for the line intensity, profile and maps expected for represent...
متن کاملDeuterated H + 3 in proto - planetary disks
Probing the gas and dust in proto-planetary disks is central for understanding the process of planet formation. In disks surrounding solar type protostars, the bulk of the disk mass resides in the outer midplane, which is cold (≤20 K), dense (≥ 107 cm−3) and depleted of CO. Observing the disk midplane has proved, therefore, to be a formidable challenge. Ceccarelli et al. (2004) detected H2D emi...
متن کاملDust in Proto-Planetary Disks: Properties and Evolution
We review the properties of dust in protoplanetary disks around optically visible pre-main sequence stars obtained with a variety of observational techniques, from measurements of scattered light at visual and infrared wavelengths to mid-infrared spectroscopy and millimeter interferometry. A general result is that grains in disks are on average much larger than in the diffuse interstellar mediu...
متن کاملN-body Calculations of Cluster Growth in Proto-planetary Disks
We investigated numerically the dust growth driven by Brownian motion in a protoplanetary disc around a solar-type young stellar object. This process is considered as the first stage in the transformation of the initially micron-sized solid particles to a planetary system. In contrast to earlier studies the growth was investigated at the small particle number densities typical for the condition...
متن کاملThe Shape of the Inner Rim in Proto-Planetary Disks
This paper discusses the properties of the inner puffed-up rim which forms in circumstellar disks when dust evaporates. We argue that the rim shape is controlled by a fundamental property of circumstellar disks, namely their very large vertical density gradient, through the dependence of grain evaporation temperature on gas density. As a result, the bright side of the rim is curved, rather than...
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: 2007
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20077458