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Related papers: A Large Double-ring Disk around the Taurus M Dwarf…

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We observe the dust continuum at 225 GHz and CO isotopologue (12CO, 13CO, and C18O) J=2-1 emission lines toward the CR Cha protoplanetary disk using the Atacama Large Millimeter/Submillimeter Array (ALMA). The dust continuum image shows a…

(Abridged) We present CARMA observations of the thermal dust emission from the circumstellar disks around the young stars RYTau and DGTau at wavelengths of 1.3mm and 2.8mm. The angular resolution of the maps is as high as 0.15arcsec, or…

Solar and Stellar Astrophysics · Physics 2015-05-18 Andrea Isella , John M. Carpenter , Anneila I. Sargent

At 7.7 pc, the A-type star Fomalhaut hosts a bright debris disk with multiple radial components. The disk is eccentric and misaligned, strongly suggesting that it is sculpted by interaction with one or more planets. Compact sources are now…

Earth and Planetary Astrophysics · Physics 2023-07-19 Grant M. Kennedy , Joshua B. Lovell , Paul Kalas , Michael P. Fitzgerald

We have conducted a survey of 17 wide (> 100 AU) young binary systems in Taurus with the Atacama Large Millimeter Array (ALMA) at two wavelengths. The observations were designed to measure the masses of circumstellar disks in these systems…

Solar and Stellar Astrophysics · Physics 2015-06-18 R. L. Akeson , E. L. N. Jensen

We present Atacama Large Millimeter/submillimeter Array (ALMA) Band 6 observations of dust continuum emission of the disk around WW Cha. The dust continuum image shows a smooth disk structure with a faint (low-contrast) dust ring, extending…

We present high resolution millimeter continuum ALMA observations of the disks around the T Tauri stars LkCa 15 and J1610. These disks host dust-depleted inner regions, possibly carved by massive planets, and are of prime interest to study…

Earth and Planetary Astrophysics · Physics 2020-07-22 S. Facchini , M. Benisty , J. Bae , R. Loomis , L. Perez , M. Ansdell , S. Mayama , P. Pinilla , R. Teague , A. Isella , A. Mann

Circumstellar disks around stars older than 10 Myr are expected to be gas-poor. There are, however, two examples of old (30-40 Myr) debris-like disks containing a detectable amount of cold CO gas. Here we present ALMA and Herschel Space…

Solar and Stellar Astrophysics · Physics 2015-06-17 A. Moór , A. Juhász , Á. Kóspál , P. Ábrahám , D. Apai , T. Csengeri , C. Grady , Th. Henning , A. M. Hughes , Cs. Kiss , I. Pascucci , M. Schmalzl , K. Gabányi

Recently, the youngest transiting planet was discovered around the T Tauri star, IRAS 04125+2902, in the Taurus-Auriga star-forming region. This system is crucial for understanding the early stages of planet formation. We used Atacama Large…

Asymmetrical features in disks provide indirect evidences of embedded objects, such as planets. Observed with the Atacama Large Millimeter/submillimeter Array (ALMA), the circumstellar disk in MWC 758 traced with thermal dust continuum…

Astrophysics of Galaxies · Physics 2020-12-02 Bo-Ting Shen , Ya-Wen Tang , Patrick M. Koch

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

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

We report the first detection of a gap and a ring in 336 GHz dust continuum emission from the protoplanetary disk around TW Hya, using the Atacama Large Millimeter/Submillimeter Array (ALMA). The gap and ring are located at around 25 and 41…

The study of the properties of disks around young brown dwarfs can provide important clues on the formation of these very low-mass objects and on the possibility of forming planetary systems around them. The presence of warm dusty disks…

Solar and Stellar Astrophysics · Physics 2016-10-05 L. Testi , A. Natta , A. Scholz , M. Tazzari , L. Ricci , I. de Gregorio Monsalvo

Compact protoplanetary disks with a radius of $\lesssim$ 50 au are common around young low-mass stars. We report high resolution ALMA dust continuum observations toward a compact disk around CW Tau at Band 4 ($\lambda=2.2$ mm), 6 (1.3 mm),…

Earth and Planetary Astrophysics · Physics 2022-05-18 Takahiro Ueda , Akimasa Kataoka , Takashi Tsukagoshi

We present deep, high-resolution ($\sim$100 mas) Karl G. Jansky Very Large Array (VLA) Ka-band (9.1 mm) observations of the disk around MWC 480, and infer dust properties through a combined analysis with archival Atacama Large…

The young A0V star HR 4796A is host to a bright and narrow ring of dust, thought to originate in collisions between planetesimals within a belt analogous to the Solar System's Edgeworth-Kuiper belt. Here we present high spatial resolution…

Earth and Planetary Astrophysics · Physics 2018-01-31 Grant M. Kennedy , Sebastian Marino , Luca Matra , Olja Panic , David Wilner , Mark C. Wyatt , Ben Yelverton

We analyzed the archival data of the continuum emission at six wavelengths from 3 to 0.4 mm and 13CO and C18O (1-0, 2-1, and 3-2) lines in the protoplanetary disk around HD 142527 obtained with the Atacama Large Millimeter/submillimeter…

Earth and Planetary Astrophysics · Physics 2020-12-23 Hsi-Wei Yen , Pin-Gao Gu

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…

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

We re-process the Atacama Large Millimeter/Submillimeter Array (ALMA) long-baseline science verification data taken toward HL Tauri. As shown by the previous work, we confirm that the high spatial resolution (~ 0."019, corresponding to ~…

Earth and Planetary Astrophysics · Physics 2016-03-09 Eiji Akiyama , Yasuhiro Hasegawa , Masahiko Hayashi , Satoru Iguchi