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The latest observation of HL Tau by ALMA revealed spectacular concentric dust rings in its circumstellar disk. We attempt to explain the multiple ring structure as a consequence of aggregate sintering. Sintering is known to reduce the…

Solar and Stellar Astrophysics · Physics 2016-04-27 Satoshi Okuzumi , Munetake Momose , Sin-iti Sirono , Hiroshi Kobayashi , Hidekazu Tanaka

(Abridged) We attempt to characterize the radial distribution of dust in disks around a sample of young stars from an observational point of view, and, when possible, in a model-independent way, by using parametric laws. We used the IRAM…

Astrophysics of Galaxies · Physics 2015-05-27 S. Guilloteau , A. Dutrey , V. Piétu , Y. Boehler

Over two hundred protoplanetary disk systems have been resolved by ALMA, and the vast majority suggest the presence of planets. The dust gaps in transition disks are considered evidence of giant planets sculpting gas and dust under…

Earth and Planetary Astrophysics · Physics 2024-06-05 Yinhao Wu

Rings and gaps are commonly observed in the dust continuum emission of young stellar disks. Previous studies have shown that substructures naturally develop in the weakly ionized gas of magnetized, non-ideal MHD disks. The gas rings are…

Earth and Planetary Astrophysics · Physics 2022-07-20 Xiao Hu , Zhi-Yun Li , Zhaohuan Zhu , Chao-Chin Yang

The dynamical interactions between young binaries can perturb the material distribution of their circumstellar disks, and modify the planet formation process. In order to constrain the impact and nature of the binary interaction in the RW…

Earth and Planetary Astrophysics · Physics 2024-07-29 N. T. Kurtovic , S. Facchini , M. Benisty , P. Pinilla , S. Cabrit , E. L. N. Jensen , C. Dougados , R. Booth , C. N. Kimmig , C. F. Manara , J. E. Rodriguez

IRAS~04158+2805 has long been thought to be a very low mass T-Tauri star (VLMS) surrounded by a nearly edge-on, extremely large disc. Recent observations revealed that this source hosts a binary surrounded by an extended circumbinary disc…

The Kepler satellite has discovered a number of transiting planets around close binary stars. These circumbinary systems have highly aligned planetary and binary orbits. In this paper, we explore how the mutual inclination between the…

Earth and Planetary Astrophysics · Physics 2013-04-19 Francois Foucart , Dong Lai

CoKu Tau/4 has been labeled as one of the very few known transition disk objects: disks around young stars that have their inner disks cleared of dust, arguably due to planetary formation. We report aperture-masking interferometry and…

Astrophysics · Physics 2009-11-13 M. J. Ireland , A. L. Kraus

HD$\,$169142 is an excellent target to investigate signs of planet-disk interaction due to the previous evidence of gap structures. We performed J-band (~1.2{\mu}m) polarized intensity imaging of HD169142 with VLT/SPHERE. We observe…

Tidal interactions between the embedded planets and their surrounding protoplanetary disks are often postulated to produce the observed complex dust substructures, including rings, gaps, and asymmetries. In this Letter, we explore the…

Earth and Planetary Astrophysics · Physics 2020-02-05 JT Laune , Hui Li , Shengtai Li , Ya-Ping Li , Levi G. Walls , Tilman Birnstiel , Joanna Drazkowska , Sebastian Stammler

Understanding planet formation requires to discern how dust grows in protoplanetary disks. An important parameter to measure in disks is the maximum dust grain size present. This is usually estimated through measurements of the dust opacity…

Recent (sub)millimeter polarimetric observations toward the young star HL Tau have successfully detected polarization emission from its circumstellar disk. The polarization pattern observed at 0.87 mm is uniform and parallel to the disk's…

Earth and Planetary Astrophysics · Physics 2019-06-26 Satoshi Okuzumi , Ryo Tazaki

We present results of high-resolution imaging toward HL Tau by the Combined Array for Research in Millimeter-wave Astronomy (CARMA). We have obtained 1.3 and 2.7 mm dust continua with an angular resolution down to 0.13 arc second. Through…

Solar and Stellar Astrophysics · Physics 2015-05-28 Woojin Kwon , Leslie W. Looney , Lee G. Mundy

Nearly all young stars are initially surrounded by `protoplanetary' discs of gas and dust, and in the case of single stars at least 30\% of these discs go on to form planets. The process of protoplanetary disc formation can result in…

Millimeter observations of disks around young stars reveal substructures indicative of gas pressure traps that may aid grain growth and planet formation. We present Submillimeter Array observations of HD 34700- two Herbig Ae stars in a…

Theoretical models of grain growth predict dust properties to change as a function of protoplanetary disk radius, mass, age and other physical conditions. We lay down the methodology for a multi-wavelength analysis of (sub-)mm and cm…

Context. Protoplanetary disks around young stars often contain substructures like rings, gaps, and spirals that could be caused by interactions between the disk and forming planets. Aims. We aim to study the young (1-3 Myr) star DR Tau in…

We use extensive global two-dimensional hydrodynamic disk gas+dust simulations with embedded planets, coupled with three dimensional radiative transfer calculations, to model the dust ring and gap structures in the HL Tau protoplanetary…

Earth and Planetary Astrophysics · Physics 2016-02-17 Sheng Jin , Shengtai Li , Andrea Isella , Hui Li , Jianghui Ji

DH Tau is a young ($\sim$1 Myr) classical T Tauri star. It is one of the few young PMS stars known to be associated with a planetary mass companion, DH Tau b, orbiting at large separation and detected by direct imaging. DH Tau b is thought…

Recent discoveries of circumbinary planets by Kepler mission provide motivation for understanding their birthplaces - protoplanetary disks around stellar binaries with separations <1 AU. We explore properties and evolution of such…

Earth and Planetary Astrophysics · Physics 2016-01-27 David Vartanyan , Jose A. Garmilla , Roman R. Rafikov