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Protoplanetary disks observed in scattered light reveal essential insights into the disk's three-dimensional architecture and dust properties. These disks, which play a crucial role in planet formation, have complex structures where the…

Earth and Planetary Astrophysics · Physics 2025-07-16 Joel George , Carsten Dominik , Christian Ginski

The recent detections of extrasolar giant planets has revealed a surprising diversity of planetary system architectures, with many very unlike our Solar System. Understanding the origin of this diversity requires multi-wavelength studies of…

Astrophysics · Physics 2009-11-10 D. J. Wilner

High-angular resolution observations at sub-millimeter/millimeter wavelengths of disks surrounding young stars have shown that their morphology is made of azimuthally-symmetric or point-symmetric substructures, in some cases with spiral…

Earth and Planetary Astrophysics · Physics 2021-10-27 Diana Blanco , Luca Ricci , Mario Flock , Neal Turner

Protoplanetary disks, which are the natural consequence of the gravitational collapse of the dense molecular cloud cores, host the formation of the known planetary systems in our universe. Substantial efforts have been dedicated to…

Protoplanetary discs are now routinely observed and exoplanets, after the numerous indirect discoveries, are starting to be directly imaged. To better understand the planet formation process, the next step is the detection of forming…

Earth and Planetary Astrophysics · Physics 2015-09-30 Jean-François Gonzalez , Guillaume Laibe , Sarah T. Maddison , Christophe Pinte , François Ménard

Electron, optical, and scanning probe microscopy methods are generating ever increasing volume of image data containing information on atomic and mesoscale structures and functionalities. This necessitates the development of the machine…

Machine Learning · Computer Science 2023-04-03 Mani Valleti , Yongtao Liu , Sergei Kalinin

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 prevalence of substructures in $\sim1-10$ Myr old protoplanetary disks, which are often linked to planet formation, has raised the question of how early such features form, and as a corollary, how early planet formation begins. Here we…

Solar and Stellar Astrophysics · Physics 2020-11-04 Patrick D. Sheehan , John J. Tobin , Sam Federman , S. Thomas Megeath , Leslie W. Looney

New ALMA observations of protoplanetary disks allow us to probe planet formation in other systems, giving us new constraints on planet formation processes. Meanwhile, studies of our own Solar System rely on constraints derived in a…

Earth and Planetary Astrophysics · Physics 2022-03-14 C. Bergez-Casalou , B. Bitsch , N. T. Kurtovic , P. Pinilla

Transitional discs are a special type of protoplanetary discs where planet formation is thought to be taking place. These objects feature characteristic inner cavities and/or gaps of a few tens of AUs in the sub-millimitre images of the…

Earth and Planetary Astrophysics · Physics 2015-06-17 M. de Juan Ovelar , M. Min , C. Dominik , C. Thalmann , P. Pinilla , M. Benisty , T. Birnstiel

The dust in planet-forming disks evolve rapidly through growth and radial drift, and external photoevaporation also contributes to this evolution in massive star-forming regions. We test whether the presence of substructures can explain the…

Earth and Planetary Astrophysics · Physics 2024-01-24 Matías Gárate , Paola Pinilla , Thomas J. Haworth , Stefano Facchini

We present a study of the evolution of the inner few astronomical units of protoplanetary disks around low-mass stars. We consider nearby stellar groups with ages spanning from 1 to 11 Myr, distributed into four age bins. Combining…

Circumstellar disks are considered to be the birthplace of planets. Specific structures like spiral arms, gaps, and cavities are characteristic indicators of planet-disk interaction. Investigating these structures can provide insights into…

Solar and Stellar Astrophysics · Physics 2015-07-08 F. Ober , S. Wolf , A. L. Uribe , H. H. Klahr

The evolution of thin axisymmetric viscous accretion disks is a classic problem in astrophysics. While models based on this simplified geometry provide only approximations to the true processes of instability-driven mass and angular…

Instrumentation and Methods for Astrophysics · Physics 2015-02-25 Mark R. Krumholz , John C. Forbes

Recent advances in deep learning have shown their ability to learn strong feature representations for images. The task of image clustering naturally requires good feature representations to capture the distribution of the data and…

Computer Vision and Pattern Recognition · Computer Science 2020-05-12 Vignesh Prasad , Dipanjan Das , Brojeshwar Bhowmick

Our understanding of protoplanetary disks is rapidly departing from the classical view of a smooth, axisymmetric disk. This is in part thanks to the high angular resolution that (sub)mm observations can provide. Here we present the combined…

Circumstellar disks are characteristic for star formation and vanish during the first few Myr of stellar evolution. During this time planets are believed to form in the dense midplane by growth, sedimentation and aggregation of dust.…

Solar and Stellar Astrophysics · Physics 2015-06-05 D. Madlener , S. Wolf , A. Dutrey , S. Guilloteau

Over the past decade, advancement of observational capabilities, specifically the Atacama Large Millimeter/submillimeter Array (ALMA) and SPHERE instrument, alongside theoretical innovations like pebble accretion, have reshaped our…

Earth and Planetary Astrophysics · Physics 2024-09-30 Tilman Birnstiel

Many protoplanetary disks exhibit annular gaps in dust emission, which may be produced by planets. Simulations of planet-disk interaction aimed at interpreting these observations often treat the disk thermodynamics in an overly simplified…

Earth and Planetary Astrophysics · Physics 2020-12-02 Ryan Miranda , Roman R. Rafikov