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Protoplanetary disks, the birthplaces of planets, commonly feature bright rings and dark gaps in both continuum and line emission maps. Accreting planets are interacting with the disk, not only through gravity, but also by changing the…

地球与行星天体物理 · 物理学 2023-10-04 Haochang Jiang , Yu Wang , Chris W. Ormel , Sebastiaan Krijt , Ruobing Dong

Recent observations by the Atacama Large Millimeter/submillimeter Array (ALMA) of disks around young stars revealed distinct asymmetries in the dust continuum emission. In this work we want to study axisymmetric and non-axisymmetric…

地球与行星天体物理 · 物理学 2015-01-28 M. Flock , J. P. Ruge , N. Dzyurkevich , Th. Henning , H. Klahr , S. Wolf

In recent years, the disk populations in a number of young star-forming regions have been surveyed with ALMA. Understanding the disk properties and their correlation with those of the central star is critical to understand planet formation.…

Context: While sub-micron- and micron-sized dust grains are generally well mixed with the gas phase in protoplanetary disks, larger grains will be partially decoupled and as a consequence have a different distribution from that of the gas.…

太阳与恒星天体物理 · 物理学 2015-05-19 Laure Fouchet , Jean-François Gonzalez , Sarah T. Maddison

We present Band 6 and Band 7 observations of 10 Lupus disks around M3-K6 stars from the ALMA survey of Gas Evolution in PROtoplanetary disks (AGE-PRO) Large Program. In addition to continuum emission in both bands, our Band 6 setup covers…

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…

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…

地球与行星天体物理 · 物理学 2019-11-06 Philipp Weber , Sebastián Pérez , Pablo Benítez-Llambay , Oliver Gressel , Simon Casassus , Leonardo Krapp

Context. Structures in debris disks induced by planetdisk interaction are promising to provide valuable constraints on the existence and properties of embedded planets. Aims. We investigate the observability of structures in debris disks…

天体物理仪器与方法 · 物理学 2015-06-05 Steve Ertel , Sebastian Wolf , Jens Rodmann

We explain the axisymmetric gaps seen in recent long-baseline observations of the HL Tau protoplanetary disc with the Atacama Large Millimetre/Submillimetre Array (ALMA) as being due to the different response of gas and dust to embedded…

地球与行星天体物理 · 物理学 2015-09-09 Giovanni Dipierro , Daniel Price , Guillaume Laibe , Kieran Hirsh , Alice Cerioli , Giuseppe Lodato

The formation of planets occurs within protoplanetary disks surrounding young stars, resulting in perturbation of the gas and dust surface densities. Here, we report the first evidence of spatially resolved gas surface density…

地球与行星天体物理 · 物理学 2020-06-24 Cécile Favre , Davide Fedele , Luke Maud , Richard Booth , Marco Tazzari , Anna Miotello , Leonardo Testi , Dmitry Semenov , Simon Bruderer

ALMA (Atacama Large Millimetre/submillimetre Array) observations of the thermal emission from protoplanetary disc dust have revealed a wealth of substructures that could evidence embedded planets, but planet-driven spirals, one of the more…

地球与行星天体物理 · 物理学 2024-04-30 Edward T. Stevenson , Álvaro Ribas , Jessica Speedie , Richard A. Booth , Cathie J. Clarke

Abridged: Recent simulations have explored different ways to form accretion disks around low-mass stars. We aim to present observables to differentiate a rotationally supported disk from an infalling rotating envelope toward deeply embedded…

太阳与恒星天体物理 · 物理学 2015-04-29 Daniel Harsono , Ewine van Dishoeck , Simon Bruderer , Zhi-Yun Li , Jes Jorgensen

Small organic molecules, such as C2H, HCN, and H2CO, are tracers of the C, N, and O budget in protoplanetary disks. We present high angular resolution (10-50 au) observations of C2H, HCN, and H2CO lines in five protoplanetary disks from the…

M-stars are the most common hosts of planetary systems in the Galaxy. Protoplanetary disks around M-stars thus offer a prime opportunity to study the chemistry of planet-forming environments. We present an ALMA survey of molecular line…

We introduce the Disk Substructures at High Angular Resolution Project (DSHARP), one of the initial Large Programs conducted with the Atacama Large Millimeter/submillimeter Array (ALMA). The primary goal of DSHARP is to find and…

Gaps in protoplanetary disks have long been hailed as signposts of planet formation. However, a direct link between exoplanets and disks remains hard to identify. We present a large sample study of ALMA disk surveys of nearby star-forming…

地球与行星天体物理 · 物理学 2021-06-30 Nienke van der Marel , Gijs Mulders

Kant and Laplace suggested the Solar System formed from a rotating gaseous disk in the 18th century, but convincing evidence that young stars are indeed surrounded by such disks was not presented for another 200 years. As we move into the…

天体物理学 · 物理学 2008-01-25 Claire J. Chandler , Debra S. Shepherd