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Related papers: Science with an ngVLA: Dust growth and dust trappi…

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Jetted plasma outflows from active galactic nuclei (AGN) represent the most energetic phenomena in the known universe, and play a key role in regulating galaxy formation through feedback processes. The JVLA and VLBA have played an…

Astrophysics of Galaxies · Physics 2018-10-18 Matthew L. Lister , Kenneth I. Kellermann , Preeti Kharb

Since the discovery of the multi-ring structure of the HL Tau disk, ALMA data suggest that the dust continuum emission of many, if not all, protoplanetary disks consists of rings and gaps, no matter their spectral type or age. The origin of…

Earth and Planetary Astrophysics · Physics 2019-02-27 Nienke van der Marel , Ruobing Dong , James di Francesco , Jonathan Williams , John Tobin

During the past five years, the Spitzer Space Telescope and improved ground-based facilities have enabled a huge increase in the number of circumstellar disks, around young stars of Solar mass or smaller, in which the composition of the…

Solar and Stellar Astrophysics · Physics 2009-02-17 Dan M. Watson

The Atacama Large Millimeter/submillimeter Array (ALMA) large program AGE-PRO explores protoplanetary disk evolution by studying gas and dust across various ages. This work focuses on ten evolved disks in Upper Scorpius, observed in dust…

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

Disk winds are thought to play an important role in the evolution and dispersal of planet-forming disks. While high-resolution optical and infrared spectroscopy has identified several disk wind diagnostics, wind mass loss rates remain…

Earth and Planetary Astrophysics · Physics 2018-10-29 I. Pascucci , S. Andrews , C. Chandler , A. Isella

One of the most important questions in the field of planet formation is how mm-cm sized dust particles overcome the radial drift and fragmentation barriers to form kilometer-sized planetesimals. ALMA observations of protoplanetary disks, in…

The next generation Very Large Array (ngVLA) will revolutionize our understanding of the distant Universe via the detection of cold molecular gas in the first galaxies. Its impact on studies of galaxy characterization via detailed gas…

We present ALMA observations of 101 protoplanetary disks within the star-forming region Lynds 1641 in the Orion Molecular Cloud A. Our observations include 1.33 mm continuum emission and spectral windows covering the J=2-1 transition of…

ALMA observations of protoplanetary disks confirm earlier indications that there is a clear difference between the dust and gas radial extents. The origin of this difference is still debated, with both radial drift of the dust and optical…

Solar and Stellar Astrophysics · Physics 2017-09-06 Stefano Facchini , Til Birnstiel , Simon Bruderer , Ewine F. van Dishoeck

Proto-planetary discs, the birth environment of planets, are an example of a structure commonly found in astrophysics, accretion discs. Identifying the mechanism responsible for accretion is a long-standing problem, dating back several…

Earth and Planetary Astrophysics · Physics 2023-04-04 Giovanni P. Rosotti

Grain growth in planet-forming disks is the first step toward the formation of planets. The growth of grains and their inward drift leaves a distinct imprint on the dust surface-density distribution and the resulting surface-brightness…

Planet formation remains a fundamentally important yet poorly understood process. Protoplanetary disks, the birthplaces of planetary systems, exhibit a wide range of substructures that are increasingly interpreted as signatures of…

Earth and Planetary Astrophysics · Physics 2026-04-13 Gabriele Cugno , Michael R. Meyer

Understanding the formation of substructures in protoplanetary disks is vital for gaining insights into dust growth and the process of planet formation. Studying these substructures in highly embedded Class 0 objects using the Atacama Large…

We analyze the structure of 15 protocluster forming regions in the Milky Way using their $1.3$ mm continuum emission maps from the ALMA-IMF large program. The analysis of the clouds structure is performed using the delta-variance spectrum…

Astrophysics of Galaxies · Physics 2023-07-04 Sami Dib

Our understanding of stellar atmospheres and our ability to infer architectures of extrasolar planetary systems rely on understanding the emission of stars at submillimeter to centimeter wavelengths. In this chapter we describe how…

Unresolved gas and dust observations show a surprising diversity in the amount of interstellar matter in early-type galaxies. Using ALMA observations we resolve the ISM in z$\sim$0.05 early-type galaxies. From a large sample of early-type…

Astrophysics of Galaxies · Physics 2018-11-08 A. E. Sansom , D. H. W. Glass , G. J. Bendo , T. A. Davis , K. Rowlands , N. Bourne , L. Dunne , S. Eales , S. Kaviraj , C. Popescu , M. Smith , S. Viaene

The migration of planetary cores embedded in a protoplanetary disk is an important mechanism within planet-formation theory, relevant for the architecture of planetary systems. Consequently, planet migration is actively discussed, yet often…

Earth and Planetary Astrophysics · Physics 2019-11-06 Philipp Weber , Sebastián Pérez , Pablo Benítez-Llambay , Oliver Gressel , Simon Casassus , Leonardo Krapp

High dust density in the midplane of protoplanetary disks is favorable for efficient grain growth and can allow fast formation of planetesimals and planets, before disks dissipate. Vertical settling and dust trapping in pressure maxima are…

Solar and Stellar Astrophysics · Physics 2022-05-11 M. Villenave , K. R. Stapelfeldt , G. Duchene , F. Menard , M. Lambrechts , A. Sierra , C. Flores , W. R. F. Dent , S. Wolff , A. Ribas , M. Benisty , N. Cuello , C. Pinte

We investigate the behaviour of dust in protoplanetary disks under the action of gas drag using our 3D, two-fluid (gas+dust) SPH code. We present the evolution of the dust spatial distribution in global simulations of planetless disks as…

Astrophysics · Physics 2009-11-13 Jean-François Gonzalez , Laure Fouchet , Sarah T. Maddison , Guillaume Laibe