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Related papers: Characterizing the dust content of disk substructu…

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We present new results from the Disks@EVLA program for two young stars: CY Tau and DoAr 25. We trace continuum emission arising from their circusmtellar disks from spatially resolved observations, down to tens of AU scales, at {\lambda} =…

When imaged at high-resolution, many proto-planetary discs show gaps and rings in their dust sub-mm continuum emission profile. These structures are widely considered to originate from local maxima in the gas pressure profile. The…

Earth and Planetary Astrophysics · Physics 2020-05-06 Giovanni P. Rosotti , Richard Teague , Cornelis Dullemond , Richard A. Booth , Cathie Clarke

Debris disks are the intrinsic by-products of the star and planet formation processes. Most likely due to instrumental limitations and their natural faintness, little is known about debris disks around low-mass stars, especially when it…

Models of planet formation and disc evolution predict a variety of observables in the dust structure of protoplanetary discs. Here we present Atacama Large Millimeter/submillimeter Array (ALMA) Band-6 and Band-7 observations of the…

Solar and Stellar Astrophysics · Physics 2016-03-09 H. Canovas , C. Caceres , M. R. Schreiber , A. Hardy , L. Cieza , F. Ménard , A. Hales

The thermal structure of protoplanetary disks is a fundamental characteristic of the system that has wide reaching effects on disk evolution and planet formation. In this study, we constrain the 2D thermal structure of the protoplanetary…

The last decade has witnessed remarkable advances in the characterization of the (sub-)millimeter emission from planet-forming disks. Instead, the study of the (sub-)centimeter emission has made more limited progress, to the point that only…

We present ALMA observations of the 0.88 millimeter dust continuum, 13CO, and C18O J=3-2 line emission of the circumbinary disk HD142527 at a spatial resolution of about 0.25". This system is characterized by a large central cavity of…

Earth and Planetary Astrophysics · Physics 2017-05-10 Y. Boehler , E. Weaver , A. Isella , L. Ricci , C. Grady , J. Carpenter , L. Perez

Protoplanetary disks emit radiation across a broad range of wavelengths, requiring a multiwavelength approach to fully understand their physical mechanisms and how they form planets. Observations at sub-millimeter to centimeter wavelengths…

How do dust grains in protoplanetary disks overcome rapid radial drift and grow from micron size particles to planets is not well understood. The key is to search for evidence of dust accumulation and growth as a function of radius in the…

Earth and Planetary Astrophysics · Physics 2022-12-14 Dafa Li , Yao Liu , Hongchi Wang , Yao Wang , Yuehui Ma

Detecting planet signatures in protoplanetary disks is fundamental to understanding how and where planets form. In this work, we report dust and gas observational hints of planet formation in the disk around 2MASS-J16120668-301027, as part…

We present a novel method for determining the surface density of protoplanetary disks through consideration of disk 'dust lines' which indicate the observed disk radial scale at different observational wavelengths. This method relies on the…

Earth and Planetary Astrophysics · Physics 2019-08-19 Diana Powell , Ruth Murray-Clay , Hilke E. Schlichting

Most of the exoplanets discovered in our galaxy to date orbit low-mass stars, which tend to host small disks in their early stages. To better elucidate the link between planet formation and disk substructures, observational biases should be…

The Disk Substructures at High Angular Resolution Project (DSHARP) is the largest homogeneous high-resolution ($\sim 0.035$ arcsec, or $\sim$ 5 au) disk continuum imaging survey with ALMA so far. In the coming years, many more disks will be…

Extended low surface brightness emission has been identified in a number of protoplanetary disks, in tension with predictions of radial drift theory. We aim to investigate the nature and origin of faint, extended dust emission in the outer…

Earth and Planetary Astrophysics · Physics 2026-05-13 Sreejita Das , Enrique Macías , Nicolas T. Kurtovic , Til Birnstiel , Elena M. Viscardi , Pietro Curone

Investigating the dynamical evolution of dust grains in proto-planetary disks is a key issue to understand how planets should form. We identify under which conditions dust settling can be constrained by high angular resolution observations…

Earth and Planetary Astrophysics · Physics 2013-03-26 Y. Boehler , A. Dutrey , S. Guilloteau , V. Piétu

We have developed a self-consistent model of the disk around the nearby 10 Myr old star TW Hya which matches the observed spectral energy distribution and 7mm images of the disk. The model requires a significant dust size evolution and a…

Astrophysics · Physics 2009-11-07 Nuria Calvet , Paola D'Alessio , Lee Hartmann , David Wilner , Andrew Walsh , Michael Sitko

We model substructure in the protoplanetary disks around DoAr 44 and HD 163296 in order to better understand the conditions under which planets may form. We match archival millimeter-wavelength thermal emission against models of the disks'…

Earth and Planetary Astrophysics · Physics 2022-12-28 Harrison Leiendecker , Hannah Jang-Condell , Neal J. Turner , Adam D. Myers

A search for previously undetected optically thin disks around stars in the nearby, young, TW Hydrae Association was conducted around sixteen stars with sensitive 12 and 18 micron photometry. The survey could detect Zodiacal-like dust, with…

Astrophysics · Physics 2009-11-10 A. J. Weinberger , E. E. Becklin , B. Zuckerman , I. Song

We aim to estimate if structures, such as cavities, rings, and gaps, are common in disks around VLMS and to test models of structure formation in these disks. We also aim to compare the radial extent of the gas and dust emission in disks…

ALMA has revealed that the millimetre dust structures of protoplanetary discs are extremely diverse. It has been proposed that the strength of H$_2$O emission in the inner disc particularly depends on the influx of icy pebbles from the…