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Molecular abundances in protoplanetary disks are highly sensitive to the local physical conditions, including gas temperature, gas density, radiation field, and dust properties. Often multiple factors are intertwined, impacting the…

Earth and Planetary Astrophysics · Physics 2023-12-11 Amina Diop , Ilse Cleeves , Dana Anderson , Jamila Pegues , Adele Plunkett

Protoplanetary disks are the sites of vigorous hydrodynamic processes, such as accretion and outflows, and ultimately establish the conditions for the formation of planets. The properties of disk outflows are often inferred through analysis…

Solar and Stellar Astrophysics · Physics 2024-03-18 Ahmad Nemer , ChangHoon Hahn , Jiaxuan Li , Peter Melchior , Jeremy Goodman

The characterization of interstellar chemical inventories provides valuable insight into the chemical and physical processes in astrophysical sources. The discovery of new interstellar molecules becomes increasingly difficult as the number…

Molecular lines hold valuable information on the physical and chemical composition of disks around young stars, the likely progenitors of planetary systems. This invited contribution discusses techniques to calculate the molecular emission…

Astrophysics · Physics 2017-01-18 Michiel Hogerheijde

We examine changes in the molecular abundances resulting from increased heating due to a self-luminous planetary companion embedded within a narrow circumstellar disk gap. Using 3D models that include stellar and planetary irradiation, we…

Solar and Stellar Astrophysics · Physics 2015-05-29 L. Ilsedore Cleeves , Edwin A. Bergin , Tim J. Harries

[Abridged] This review paper discussed which chemical effects may be at play in a planet-forming disk midplane, which effects are relevant under different conditions, and which tools are available for modelling chemical kinetics in a disk…

Earth and Planetary Astrophysics · Physics 2022-11-01 Christian Eistrup

In this review we re-evaluate our observational and theoretical understanding of the chemical evolution of protoplanetary disks. We discuss how improved observational capabilities have enabled the detection of numerous molecules exposing an…

Astrophysics · Physics 2007-05-23 E. A. Bergin , Y. Aikawa , G. A. Blake , E. F. van Dishoeck

Protoplanetary disks (PPDs) are characterized by different kinds of gas dynamics and chemistry, which are coupled via ionization, heating and cooling processes, as well as advective and turbulent transport. However, directly coupling gas…

Earth and Planetary Astrophysics · Physics 2019-02-27 Rui Xu , Xue-Ning Bai , Karin Öberg , Hao Zhang

We have developed a high resolution combined physical and chemical model of a protoplanetary disk surrounding a typical T Tauri star. Our aims were to use our model to calculate the chemical structure of disks on small scales…

Astrophysics of Galaxies · Physics 2015-05-19 Catherine Walsh , T. J. Millar , Hideko Nomura

The chemical composition of a protoplanetary disk is determined not only by in situ chemical processes during the disk phase, but also by the history of the gas and dust before it accreted from the natal envelope. In order to understand the…

Astrophysics of Galaxies · Physics 2015-05-28 Ruud Visser , Ewine F. van Dishoeck , Steven D. Doty

The composition of a protoplanetary disk is set by a combination of interstellar inheritance and gas and grain surface chemical reactions within the disk. The survival of inherited molecules, as well as the disk in situ chemistry depends on…

Solar and Stellar Astrophysics · Physics 2020-03-04 Ellen M. Price , L. Ilsedore Cleeves , Karin I. Öberg

During the million years of evolution, gas dust and ice in protoplanetary disks can be chemically reprocessed. There are evidences that the gas-phase carbon and oxygen abundances are sub-solar in disks belonging to nearby star forming…

Solar and Stellar Astrophysics · Physics 2020-07-01 D. Fedele , C. Favre

We predict how protoplanetary disks around low-mass young stars would appear in molecular lines observed with the ALMA interferometer. Our goal is to identify those molecules and transitions that can be used to probe and distinguish between…

Astrophysics · Physics 2009-11-13 D. Semenov , Ya. Pavlyuchenkov , Th. Henning , S. Wolf , R. Launhardt

Accurate measurement of temperature in protoplanetary disks is critical to understanding many key features of disk evolution and planet formation, from disk chemistry and dynamics, to planetesimal formation. This paper explores the…

Earth and Planetary Astrophysics · Physics 2018-02-14 Erik Weaver , Andrea Isella , Yann Boehler

Observations of bright protoplanetary disks often show annular gaps in their dust emission. One interpretation of these gaps is disk-planet interaction. If so, fitting models of planetary gaps to observed protoplanetary disk gaps can reveal…

Earth and Planetary Astrophysics · Physics 2020-09-09 Sayantan Auddy , Min-Kai Lin

We study the formation of the protoplanetary disk by the collapse of a primordial molecular cloud, and how its evolution leads to the selection of specific types of planets. We use a hydrodynamical code that accounts for the dynamics,…

Earth and Planetary Astrophysics · Physics 2019-04-17 Kevin Baillié , Joao Marques , Laurent Piau

This comprehensive review summarizes our current understanding of the evolution of gas, solids and molecular ices in protoplanetary disks. Key findings related to disk physics and chemistry, both observationally and theoretically, are…

Astrophysics of Galaxies · Physics 2013-10-14 Thomas Henning , Dmitry Semenov

In this era of exoplanet characterisation with JWST, the need for a fast implementation of classical forward models to understand the chemical and physical processes in exoplanet atmospheres is more important than ever. Notably, the…

Earth and Planetary Astrophysics · Physics 2023-06-28 Julius L. A. M. Hendrix , Amy J. Louca , Yamila Miguel

Characterizing exoplanetary atmospheres via Bayesian retrievals requires assuming some chemistry model, such as thermochemical equilibrium or parameterized abundances. The higher-resolution data offered by upcoming telescopes enables more…

Earth and Planetary Astrophysics · Physics 2023-04-11 Michael D. Himes , Joseph Harrington , Atilim Gunes Baydin

The discovery of protoplanets and circumplanetary disks provides a unique opportunity to characterize planet formation through observations. Massive protoplanets shape the physical and chemical structure of their host circumstellar disk by…

Earth and Planetary Astrophysics · Physics 2024-04-15 Felipe Alarcón , Edwin Bergin
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