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A brief review on volatile depletion in planet-forming disks
FujunDu
Purple Mountain Observatory, Chinese Academy of Sciences, 10 Yuanhua Road, Nanjing 210033, Jiangsu, China
Abstract:
Newly born stars are surrounded by gas and dust distributed in a disk (termed protoplanetary disk), in which planets form. Observation of these objects are necessary for understanding the formation and early evolution of stars and planets, and for revealing the composition of the raw material from which planets are made. Numerical models can extract important parameters from the observational data, including the gas and dust mass of the disk. These parameters are used as input for further modeling, e.g., to calculate the chemical composition of the disk. A consistent thermochemical model is expected to reproduce the abundances of different species in the disk. However, this good wish has been challenged for many disks: models over-predict the emission line intensity of some species; namely, they are depleted. In this review we show how this disparity indicates that dust evolution has significant effects on gas chemistry, and this dust evolution may signify the earliest stages of planet formation.
Key words:  astrochemistry — circumstellar matter — molecular processes — planetary systems — planet-disk interactions — planets and satellites: atmospheres
FundProject:
A brief review on volatile depletion in planet-forming disks
FujunDu
Purple Mountain Observatory, Chinese Academy of Sciences, 10 Yuanhua Road, Nanjing 210033, Jiangsu, China
摘要:
Newly born stars are surrounded by gas and dust distributed in a disk (termed protoplanetary disk), in which planets form. Observation of these objects are necessary for understanding the formation and early evolution of stars and planets, and for revealing the composition of the raw material from which planets are made. Numerical models can extract important parameters from the observational data, including the gas and dust mass of the disk. These parameters are used as input for further modeling, e.g., to calculate the chemical composition of the disk. A consistent thermochemical model is expected to reproduce the abundances of different species in the disk. However, this good wish has been challenged for many disks: models over-predict the emission line intensity of some species; namely, they are depleted. In this review we show how this disparity indicates that dust evolution has significant effects on gas chemistry, and this dust evolution may signify the earliest stages of planet formation.
关键词:  astrochemistry — circumstellar matter — molecular processes — planetary systems — planet-disk interactions — planets and satellites: atmospheres
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