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Related papers: A 80 au cavity in the disk around HD 34282

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We present ALMA continuum and spectral line data at 0.89 mm and 3.2 mm for three disks surrounding young brown dwarfs and very low mass stars in the Taurus star forming region. Dust thermal emission is detected and spatially resolved for…

Earth and Planetary Astrophysics · Physics 2015-06-19 L. Ricci , L. Testi , A. Natta , A. Scholz , I. de Gregorio-Monsalvo , A. Isella

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…

We report new Atacama Large Millimeter/sub-millimeter Array (ALMA) Band 3 observations at 2.75 mm of the TD around SR 24S with an angular resolution of $\sim$0.11''$\times$ 0.09'' and a peak signal-to-noise ratio of $\sim24$. We detect an…

Earth and Planetary Astrophysics · Physics 2019-06-12 Paola Pinilla , Myriam Benisty , Paolo Cazzoletti , Daniel Harsono , Laura M. Pérez , Marco Tazzari

We present spatially resolved ALMA images of CO J=3-2 emission from the protoplanetary disk around HD100546. We model the spatially-resolved kinematic structure of the CO emission. Assuming a velocity profile which prescribes a flat or…

Earth and Planetary Astrophysics · Physics 2017-12-07 Catherine Walsh , Cail Daley , Stefano Facchini , Attila Juhasz

We report ALMA Cycle 2 observations of 230 GHz (1.3 mm) dust continuum emission, and $^{12}$CO, $^{13}$CO, and C$^{18}$O J = 2-1 line emission, from the Upper Scorpius transitional disk [PZ99] J160421.7-213028, with an angular resolution of…

The protoplanetary system HD 169142 is one of the few cases where a potential candidate protoplanet has been recently detected via direct imaging. To study the interaction between the protoplanet and the disk itself observations of the gas…

Solar and Stellar Astrophysics · Physics 2017-04-05 D. Fedele , M. Carney , M. R. Hogerheijde , C. Walsh , A. Miotello , P. Klaassen , S. Bruderer , Th. Henning , E. F. vanDishoeck

We present 0.075 (~400 pc) resolution ALMA observations of the [CII] and dust continuum emission from the host galaxy of the z=6.5406 quasar, P036+03. We find that the emission arises from a thin, rotating disk with an effective radius of…

Transitional disks show a lack of excess emission at infrared wavelengths due to a large dust cavity, that is often corroborated by spatially resolved observations at ~ mm wavelengths. We present the first spatially resolved ~ mm-wavelength…

Earth and Planetary Astrophysics · Physics 2016-11-11 Catherine Walsh , Attila Juhász , Gwendolyn Meeus , William R. F. Dent , Luke Maud , Yuri Aikawa , Tom J. Millar , Hideko Nomura

Context: The complex system HD 100453 AB with a ring-like circumprimary disk and two spiral arms, one of which is pointing to the secondary, is a good laboratory to test spiral formation theories. Aims: To quantify the interaction of HD…

Solar and Stellar Astrophysics · Physics 2019-04-03 G. van der Plas , F. Ménard , J. -F. Gonzalez , S. Perez , L. Rodet , C. Pinte , L. Cieza , S. Casassus , M. Benisty

High resolution ALMA observations revealed a variety of rich substructures in numerous protoplanetary disks. These structures consist of rings, gaps and asymmetric features. It is debated whether planets can be accounted for these…

Earth and Planetary Astrophysics · Physics 2021-03-31 Peter J. Rodenkirch , Thomas Rometsch , Cornelis P. Dullemond , Philipp Weber , Wilhelm Kley

Aims. We intend to spatially and spectrally resolve the [O I] emission region in two nearby Herbig stars. Methods. We present high-resolution (R = 80,000) VLT/UVES echelle spectra of the [O I] 6300A line in the Herbig Ae/Be stars HD 97048…

Astrophysics · Physics 2009-11-11 B. Acke , M. E. van den Ancker

We present the observational evidence of a pseudo-disc around the proto-brown dwarf Mayrit 1701117, the driving source of the large-scale HH~1165 jet. Our analysis is based on ALMA $^{12}$CO (2-1) line and 1.37 mm continuum observations at…

Solar and Stellar Astrophysics · Physics 2019-04-24 B. Riaz , M. N. Machida , D. Stamatellos

We present ALMA continuum and spectral line observations of the young Brown Dwarf rho-Oph 102 at about 0.89 mm and 3.2 mm. We detect dust emission from the disk at these wavelengths and derive an upper limit on the radius of the dusty disk…

Solar and Stellar Astrophysics · Physics 2015-06-12 L. Ricci , L. Testi , A. Natta , A. Scholz , I. de Gregorio-Monsalvo

Aims: The aim of this work is to study the structure of the protoplanetary disk surrounding the Herbig Ae star HD 163296. Methods: We have used high-resolution and high-sensitivity ALMA observations of the CO(3-2) emission line and the…

We present a sub-arcsecond resolution survey of the 340 GHz dust continuum emission from 50 nearby protoplanetary disks, based on new and archival observations with the Submillimeter Array. The observed visibility data were modeled with a…

Earth and Planetary Astrophysics · Physics 2017-08-23 Anjali Tripathi , Sean M. Andrews , Tilman Birnstiel , David J. Wilner

We observed the nearly edge-on debris disk system HD 111520 at $J$, $H$, & $K1$ near infrared (NIR) bands using both the spectral and polarization modes of the Gemini Planet Imager (GPI). With these new observations, we have performed an…

Here we present deep (16 mumJy), very high (40 mas) angular resolution 1.14 mm, polarimetric, Atacama Large Millimeter/submillimeter Array (ALMA) observations towards the massive protostar driving the HH 80-81 radio jet. The observations…

We present ALMA band 7 (345 GHz) continuum and $^{12}$CO(J = 3-2) observations of the circumstellar disk surrounding HD141569. At an age of about 5 Myr, the disk has a complex morphology that may be best interpreted as a nascent debris…

Earth and Planetary Astrophysics · Physics 2016-10-06 J. A. White , A. C. Boley , A. M. Hughes , K. M. Flaherty , E. Ford , D. Wilner , S. Corder , M. Payne

We present 0".035 resolution (~200 pc) imaging of the 158 um [CII] line and the underlying dust continuum of the z=6.9 quasar J234833.34-305410.0. The 18 h ALMA observations reveal extremely compact emission (diameter ~1 kpc) that is…