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The protoplanetary disk around the GGTau A binary system is so far one of the most studied young circumbinary disk. Observations of the dust continuum emission at sub-mm/mm wavelengths detected a dust ring located between 200AU and 300AU…

Solar and Stellar Astrophysics · Physics 2017-03-15 P. Cazzoletti , L. Ricci , T. Birnstiel , G. Lodato

The total disk mass sets the formation potential for exoplanets. Carbon-monoxide (CO) has been used as a gas mass tracer in T Tauri disks, but was found to be less abundant than expected due to freeze-out and chemical conversion of CO on…

Earth and Planetary Astrophysics · Physics 2023-12-08 L. M. Stapper , M. R. Hogerheijde , E. F. van Dishoeck , L. Lin , A. Ahmadi , A. S. Booth , S. L. Grant , K. Immer , M. Leemker , A. F. Pérez-Sánchez

Observations of protoplanetary disks around very low-mass stars and brown dwarfs remain challenging and little is known about their properties. The disk around CIDA1 ($\sim$0.1-0.2$M_\odot$) is one of the very few known disks that host a…

Earth and Planetary Astrophysics · Physics 2021-06-02 P. Pinilla , N. T. Kurtovic , M. Benisty , C. F. Manara , A. Natta , E. Sanchis , M. Tazzari , S. M. Stammler , L. Ricci , L. Testi

Recent mm-wavelength surveys performed with the Atacama Large Millimeter Array (ALMA) have revealed protoplanetary discs characterized by rings and gaps. A possible explanation for the origin of such rings is the tidal interaction with an…

We present the results of ALMA observations of dust continuum emission and molecular rotational lines toward a dense core MC27 (aka L1521F) in Taurus, which is considered to be at a very early stage of star formation. The detailed column…

Previous observations have shown that the $\lesssim$10 au, $\gtrsim$400 K hot inner disk of the archetypal accretion outburst young stellar object, FU Ori, is dominated by viscous heating. To constrain dust properties in this region, we…

We present Atacama Large Millimeter Array (ALMA) observations of the young, gas-rich debris disk around HD110058 at 0.3-0.6\arcsec resolution. The disk is detected in the 0.85 and 1.3~mm continuum, as well as in the J=2-1 and J=3-2…

We present a study of molecular gas in the inner disk $\left(r < 20 \, \text{AU} \right)$ around RY Lupi, with spectra from HST-COS, HST-STIS, and VLT-CRIRES. We model the radial distribution of flux from hot gas in a surface layer between…

(Abridged) Disks are observed around pre-main sequence stars, but how and when they form is still heavily debated. While disks around young stellar objects have been identified through thermal dust emission, spatially and spectrally…

Azimuthally asymmetric dust distributions observed with ALMA in transition disks have been interpreted as dust traps. We present VLA Ka band (34 GHz or 0.9 cm) and ALMA Cycle 2 Band 9 (680 GHz or 0.45 mm) observations at 0.2" resolution of…

Earth and Planetary Astrophysics · Physics 2015-09-14 Nienke van der Marel , Paola Pinilla , John Tobin , Tim van Kempen , Sean Andrews , Luca Ricci , Tilman Birnstiel

We present the first sub-arcsecond images of 49 Ceti in the [C I]3P1-3P0 emission and the 614 micron dust continuum emission observed with ALMA, as well as that in the CO(J=3-2) emission prepared by using the ALMA archival data. The spatial…

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

We analyze the highest-resolution millimeter continuum and near-infrared (NIR) scattered-light images presented to date of the circumbinary disk orbiting V4046 Sgr, a ~20 Myr old actively accreting, close binary T Tauri star system located…

Earth and Planetary Astrophysics · Physics 2019-05-29 Dary Ruiz-Rodriguez , Joel H. Kastner , Ruobing Dong , David A. Principe , Sean M. Andrews , David J. Wilner

We present extended Spectral Energy Distributions (SEDs) of seven classical RV Tauri stars, using newly obtained submillimetre continuum measurements and Geneva optical photometry supplemented with literature data. The broad-band SEDs show…

Astrophysics · Physics 2009-11-10 S. De Ruyter , H. Van Winckel , C. Dominik , L. B. F. M. Waters , H. Dejonghe

Dust and gas in protoplanetary disks dissipate as central stars evolve. In order to estimate the dust dissipation timescales in the protoplanetary disks, we stacked the WISE 12, 22, and the AKARI 90 $\mu$m survey images of known T Tauri…

Solar and Stellar Astrophysics · Physics 2021-11-17 Hiroshi Maeshima , Takao Nakagawa , Takuya Kojima , Satoshi Takita , Jungmi Kwon

We perform visibility fitting to the dust continuum Band 6 1.3 mm data of the 30 protoplanetary disks in the AGE-PRO ALMA Large Program. We obtain disk geometries, dust-disk radii, and azimuthally symmetric radial profiles of the intensity…

GASPS is a far-infrared line and continuum survey of protoplanetary and young debris disks using PACS on the Herschel Space Observatory. The survey includes [OI] at 63 microns, as well as 70, 100 and 160um continuum, with the brightest…

We present polarimetric data of CW Tau and DG Tau, two well-known Class II disk/jet systems, obtained with the Atacama Large Millimeter/submillimeter Array at 870 $\mu$m and 0."2 average resolution. In CW Tau, the total and polarized…

We present sensitive, sub-arcsecond resolution Submillimeter Array observations of the protoplanetary disk around the nearby, pre-main sequence spectroscopic binary V4046 Sgr. We report for the first time a large inner hole (r=29 AU)…

Solar and Stellar Astrophysics · Physics 2015-06-16 Katherine A. Rosenfeld , Sean M. Andrews , David J. Wilner , J. H. Kastner , M. K. McClure

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…

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