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For centuries, the rich nocturnal environment of the starry sky could be modelled only by analogue tools such as paper planispheres, atlases, globes and numerical tables. The immersive sky simulator of the twentieth century, the…

Instrumentation and Methods for Astrophysics · Physics 2021-04-05 Georg Zotti , Susanne M Hoffmann , Alexander Wolf , Fabien Chéreau , Guillaume Chéreau

We investigate the possibility to find evidence for planets in circumstellar disks by infrared and submillimeter interferometry. We present simulations of a circumstellar disk around a solar-type star with an embedded planet of 1 Jupiter…

Astrophysics · Physics 2009-11-07 S. Wolf , F. Gueth , Th. Henning , W. Kley

Text-based games offer a challenging test bed to evaluate virtual agents at language understanding, multi-step problem-solving, and common-sense reasoning. However, speed is a major limitation of current text-based games, capping at 300…

Computation and Language · Computer Science 2023-03-03 Peter A. Jansen , Marc-Alexandre Côté

The upcoming new coronographs with deeper contrast limits, together with planned and current high-contrast imaging campaigns will push the detectability limit of protoplanets. These planet-hunting campaigns present a new opportunity to…

Earth and Planetary Astrophysics · Physics 2024-04-10 Felipe Alarcón , Edwin Bergin , Gabriele Cugno

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

We investigate the formation of protoplanetary disks around nine solar mass stars formed in the context of a (40 pc)$^3$ Giant Molecular Cloud model, using RAMSES adaptive-mesh refinement simulations extending over a scale range of about 4…

Solar and Stellar Astrophysics · Physics 2017-08-30 Michael Kuffmeier , Troels Haugboelle , Åke Nordlund

Circumstellar disks are an integral part of the star formation process and the sites where planets are formed. Understanding the physical processes that drive their evolution, as disks evolve from optically thick to optically thin, is…

Astrophysics · Physics 2016-09-08 Lucas A. Cieza

We demonstrate numerical techniques for automatic identification of individual spiral arms in hydrodynamic simulations of astrophysical discs. Building on our earlier work, which used tensor classification to identify regions that were…

Astrophysics of Galaxies · Physics 2018-02-28 D. H. Forgan , F. G. Ramón-Fox , I. A. Bonnell

Automated game design is the problem of automatically producing games through computational processes. Traditionally, these methods have relied on the authoring of search spaces by a designer, defining the space of all possible games for…

Artificial Intelligence · Computer Science 2021-02-22 Matthew Guzdial , Mark Riedl

Our study's concern is about how to enlarge the scope of the virtual museum concept from the mediation activities as they are carried out in today's digital planetariums to training activities dedicated to the public. We assume that these…

Physics Education · Physics 2013-11-13 Walter Guyot , Helene Courtois M. , Jacques Toussaint

I review the processes that shape the evolution of protoplanetary discs around young, solar-mass stars. I first discuss observations of protoplanetary discs, and note in particular the constraints these observations place on models of disc…

Astrophysics · Physics 2008-11-26 Richard Alexander

Creating realistic droplet simulations and animations has long been a formidable challenge for researchers and developers due to the inherent complexity of fluid dynamics. Achieving lifelike droplet splash simulations while managing…

Fluid Dynamics · Physics 2024-11-26 Hossein Keshtkar , Nadine Aburumman

We present the results of hydrodynamical simulations of low mass protoplanets embedded in circumbinary accretion disks. The aim is to examine the migration and long term orbital evolution of the protoplanets, in order to establish the…

Astrophysics · Physics 2009-11-13 Arnaud Pierens , Richard P. Nelson

We attempt to automate various artistic processes by inventing a set of drawing games, analogous to the approach taken by emergent language research in inventing communication games. A critical difference is that drawing games demand much…

Artificial Intelligence · Computer Science 2020-12-11 Chrisantha Fernando , Daria Zenkova , Stanislav Nikolov , Simon Osindero

After an overview of general aspects of modelling the pulsation- convection interaction we present reasons why such simulations (in multidimensions) are needed but, at the same time, pose a considerable challenge. We then discuss, for…

Solar and Stellar Astrophysics · Physics 2016-01-14 Herbert J. Muthsam , Friedrich Kupka

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

Radiative transfer is an important component of hydrodynamic simulations as it determines the thermal properties of a physical system. It is especially important in cases where heating and cooling regulate significant processes, such as in…

Earth and Planetary Astrophysics · Physics 2018-05-25 Anthony Mercer , Dimitris Stamatellos , Alex Dunhill

Automated game design is a rapidly growing area of research, yet many aspects of game design lie largely unexamined still, as most systems focus on two-dimensional games with clear objectives and goal-oriented gameplay. This paper describes…

Artificial Intelligence · Computer Science 2021-04-26 Michael Cook

"Hopscotch" is a world-wide game for children to play since the times in the ancient Roman Empire and China. Here we present a study mainly focused on the research and discussion of the application on the children's well-know edutainment…

Sound · Computer Science 2010-07-15 Shing-Kwei Tzeng , Chih-Fang Huang

This review addresses the state of research that employs astronomical (remote sensing) observations of solids ("dust") in young circumstellar disks to learn about planet formation. The intention is for it to serve as an accessible,…

Solar and Stellar Astrophysics · Physics 2016-03-09 Sean M. Andrews