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Over the last few years, the chemistry of molecules other than CO in the planet-forming zones of disks is starting to be explored with Spitzer and high-resolution ground-based data. However, these studies have focused only on a few simple…

太阳与恒星天体物理 · 物理学 2015-06-12 Jeanette E. Bast , Fred Lahuis , Ewine F. van Dishoeck , Alexander G. G. M. Tielens

Observations of protoplanetary disks have shown that forming exoplanets leave characteristic imprints on the gas and dust of the disk. In the gas, these forming exoplanets cause deviations from Keplerian motion, which can be detected…

地球与行星天体物理 · 物理学 2023-05-03 J. P. Terry , C. Hall , S. Abreau , S. Gleyzer

The physical and chemical conditions within a protoplanetary disk play a crucial role in determining its chemical composition, which is subsequently inherited by any forming planets. To probe these conditions, high-resolution molecular line…

The discovery of habitable exoplanets has long been a heated topic in astronomy. Traditional methods for exoplanet identification include the wobble method, direct imaging, gravitational microlensing, etc., which not only require a…

地球与行星天体物理 · 物理学 2022-04-05 Yucheng Jin , Lanyi Yang , Chia-En Chiang

Precise determination of thermodynamic parameters in ultracold Bose gases remains challenging due to the destructive nature of conventional measurement techniques and inherent experimental uncertainties. We demonstrate a machine learning…

量子气体 · 物理学 2025-10-29 Jack Griffiths , Steven A. Wrathmall , Simon A. Gardiner

Machine learning techniques have found their way into computational chemistry as indispensable tools to accelerate atomistic simulations and materials design. In addition, machine learning approaches hold the potential to boost the…

化学物理 · 物理学 2025-10-03 Johannes Voss

[Abridged] In this first paper of this series, we present a new approach for studying the chemo-dynamical evolution in disk galaxies, which consists of fusing disk chemical evolution models with compatible numerical simulations of galactic…

星系天体物理 · 物理学 2015-06-11 I. Minchev , C. Chiappini , M. Martig

The atmospheric chemical composition of a hot Jupiter can lead to insights into where in its natal protoplanetary disk it formed and its subsequent migration pathway. We use a 1-D chemical kinetics code to compute a suite of models across a…

地球与行星天体物理 · 物理学 2022-08-17 Richard Hobbs , Oliver Shorttle , Nikku Madhusudhan

Transient microstructure in the diffuse interstellar medium has been observed towards galactic and extragalactic sources for decades, usually in lines of atoms and ions, and, more recently, in molecular lines. Evidently, there is a…

天体物理学 · 物理学 2008-11-26 T. A. Bell , S. Viti , D. A. Williams , I. A. Crawford , R. J. Price

Thermoelectric materials can be used to construct devices which recycle waste heat into electricity. However, the best known thermoelectrics are based on rare, expensive or even toxic elements, which limits their widespread adoption. To…

材料科学 · 物理学 2022-12-14 Luis M. Antunes , Keith T. Butler , Ricardo Grau-Crespo

This paper introduces a new platform to accelerate the modeling of complex aerothermochemical interactions in new turbomachines, turbo-reactors, to decarbonise chemical processes. While previous work has aerothermally demonstrated the…

计算工程、金融与科学 · 计算机科学 2025-02-13 Dylan Rubini , Budimir Rosic

Molecular line observations that could resolve protoplanetary disks of ~100 AU both spatially and kinematically would be a useful tool to unambiguously identify these disks and to determine their kinematical and physical characteristics. In…

天体物理学 · 物理学 2009-10-31 Jose F. Gomez , Paola D'Alessio

There currently exist no quantitative methods to determine the appropriate conditions for solid-state synthesis. This not only hinders the experimental realization of novel materials but also complicates the interpretation and understanding…

Standard Bayesian retrievals for exoplanet atmospheric parameters from transmission spectroscopy, while well understood and widely used, are generally computationally expensive. In the era of the JWST and other upcoming observatories,…

地球与行星天体物理 · 物理学 2025-08-08 Roy T. Forestano , Konstantin T. Matchev , Katia Matcheva , Eyup B. Unlu

Machine Learning techniques can be used to represent high-dimensional potential energy surfaces for reactive chemical systems. Two such methods are based on a reproducing kernel Hilbert space representation or on deep neural networks. They…

化学物理 · 物理学 2019-09-19 Oliver T. Unke , Markus Meuwly

One of the methods for deriving disk masses relies on direct observations of the gas, whose bulk mass is in the outer cold ($T\lesssim30$K) regions. This zone can be well traced by rotational lines of less abundant CO isotopologues, that…

太阳与恒星天体物理 · 物理学 2014-12-03 Anna Miotello , Simon Bruderer , Ewine F. van Dishoeck

We developed Convolutional Neural Networks (CNNs) to rapidly and directly infer the planet mass from radio dust continuum images. Substructures induced by young planets in protoplanetary disks can be used to infer the potential young…

地球与行星天体物理 · 物理学 2021-12-15 Shangjia Zhang , Zhaohuan Zhu , Mingon Kang

In this work we model the expected emission from the molecular line C17O(J=3-2) in protoplanetary disks, modifying different physical parameters to obtain distinctive observational signatures. Our aim is to determine the kind of…

天体物理学 · 物理学 2007-05-23 Itziar de Gregorio-Monsalvo , Paola D'Alessio , Jose F. Gomez

We present the next step in a series of papers devoted to connecting the composition of the atmospheres of forming planets with the chemistry of their natal evolving protoplanetary disks. The model presented here computes the coupled…

地球与行星天体物理 · 物理学 2022-06-08 A. J. Cridland , Ralph E. Pudritz , Tilman Birnstiel , L. Ilsedore Cleeves , Edwin A. Bergin

Despite intensive studies of protoplanetary disks, there is still no reliable way to determine their total mass and their surface density distribution, quantities that are crucial for describing both the structure and the evolution of disks…

太阳与恒星天体物理 · 物理学 2016-10-26 Anna Miotello , Ewine F. van Dishoeck , Mihkel Kama , Simon Bruderer