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Debris disks are the dust disks found around ~20% of nearby main sequence stars in far-IR surveys. They can be considered as descendants of protoplanetary disks or components of planetary systems, providing valuable information on…

Earth and Planetary Astrophysics · Physics 2018-12-05 Mark C. Wyatt

A detailed understanding of the physics of star and planet formation requires study of individual objects as well as statistical assessment of global properties and evolutionary trends. Observational investigations of circumstellar material…

Astrophysics · Physics 2007-05-23 Lynne A. Hillenbrand

Rocky planets in compact configurations are the most common ones around M dwarfs. Many disks around very low mass stars (between 0.1 and 0.5 M$_\odot$) are rather compact and small (without observable substructures and radius less than 20…

Earth and Planetary Astrophysics · Physics 2024-08-05 M. Sanchez , N. van der Marel , M. Lambrechts , G. D. Mulders , O. M. Guerra-Alvarado

The rarity and deeply embedded nature of stars with masses larger than 8 solar masses has limited our understanding of their formation. Previous work has shown that complementing spectral energy distributions with interferometric and…

Solar and Stellar Astrophysics · Physics 2021-04-14 A. J. Frost , R. D. Oudmaijer , W. J. de Wit , S. L. Lumsden

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

Mineralogical studies of silicate features emitted by dust grains in protoplanetary disks and Solar System bodies can shed light on the progress of planet formation. The significant fraction of crystalline material in comets, chondritic…

Earth and Planetary Astrophysics · Physics 2015-05-27 Isa Oliveira , Johan Olofsson , Klaus M. Pontoppidan , Ewine F. van Dishoeck , Jean-Charles Augereau , Bruno Merin

Recent spatially-resolved observations of protoplanetary disks revealed a plethora of substructures, including concentric rings and gaps, inner cavities, misalignments, spiral arms, and azimuthal asymmetries. This is the major breakthrough…

Earth and Planetary Astrophysics · Physics 2023-01-18 Jaehan Bae , Andrea Isella , Zhaohuan Zhu , Rebecca Martin , Satoshi Okuzumi , Scott Suriano

The formation of a binary system surrounded by disks is the most common outcome of stellar formation. Hence studying and understanding the formation and the evolution of binary systems and associated disks is a cornerstone of star formation…

Astrophysics · Physics 2016-08-30 J. -L. Monin , C. J. Clarke , L. Prato , C. McCabe

The growing process of both a young protostar and a circumstellar disk is investigated. Viscous evolution of a disk around a single star is considered with a model where a disk increases its mass by dynamically accreting envelope and…

Earth and Planetary Astrophysics · Physics 2015-06-16 Takuya Ohtani , Toru Tsuribe

Investigating the dust grain size and its dependence on substructures in protoplanetary disks is a crucial step in understanding the initial process of planet formation. Spectral indices derived from millimeter observations are used as a…

Earth and Planetary Astrophysics · Physics 2024-10-08 Dafa Li , Yao Liu , Hongchi Wang , Min Fang , Lei Wang

We present a synergic study of protoplanetary disks to investigate links between inner disk gas molecules and the large-scale migration of solid pebbles. The sample includes 63 disks where two types of measurements are available: i)…

Millimeter and sub-millimeter observations of continuum linear dust polarization provide insight into dust grain growth in protoplanetary disks, which are the progenitors of planetary systems. We present the results of the first survey of…

Solar and Stellar Astrophysics · Physics 2024-04-17 Rachel E. Harrison , Zhe-Yu Daniel Lin , Leslie W. Looney , Zhi-Yun Li , Haifeng Yang , Ian Stephens , Manuel Fernández-López

We present a semi-analytical population synthesis model of protoplanetary clumps formed by disk instability at radial distances of 80 - 120 AU. Various clump density profiles, initial mass functions, protoplanetary disk models, stellar…

Earth and Planetary Astrophysics · Physics 2018-03-07 Simon Müller , Ravit Helled , Lucio Mayer

Context. This is the fourth paper in a series showing the results of planet population synthesis calculations. Aims. Our goal in this paper is to systematically study the effects of important disk properties, namely disk metallicity, mass…

Earth and Planetary Astrophysics · Physics 2015-06-03 C. Mordasini , Y. Alibert , W. Benz , H. Klahr , T. Henning

While numerical simulations have been playing a key role in the studies of planet-disk interaction, testing numerical results against observations has been limited so far. With the two directly imaged protoplanets embedded in its…

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

We investigate dust substructure formation induced by two super-Earths migrating in a low-viscosity disk with single-size dust grains selected from the submillimeter to centimeter range of sizes. The orbital evolution of planets takes place…

Earth and Planetary Astrophysics · Physics 2026-05-05 Zijia Cui , Ewa Szuszkiewicz

We investigate how the formation and structure of circumplanetary disks (CPDs) varies with planet mass and protoplanetary disk aspect ratio. Using static mesh refinement and a near-isothermal equation of state, we perform a small parameter…

Earth and Planetary Astrophysics · Physics 2025-05-15 Sabina Sagynbayeva , Rixin Li , Aleksandra Kuznetsova , Zhaohuan Zhu , Yan-Fei Jiang , Philip J. Armitage

Radially compact protoplanetary discs (<=50 au) are ubiquitous in nearby star-forming regions. Multiple mechanisms have been invoked to interpret various compact discs. In this paper, we propose that fragmentation of fragile dust grains in…

Earth and Planetary Astrophysics · Physics 2025-02-10 Simin Tong , Richard Alexander

Rings are the most frequently revealed substructure in ALMA dust observations of protoplanetary disks, but their origin is still hotly debated. In this paper, we identify dust substructures in 12 disks and measure their properties to…