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We present a detailed analysis of new ALMA observations of the disk around the T-Tauri star HD 143006, which at 46 mas (7.6 au) resolution reveal new substructures in the 1.25 mm continuum emission. The disk resolves into a series of…

HD 163296 is one of the few protoplanetary discs displaying rings in the dust component. The present work uses ALMA observations of the 0.9 mm continuum emission having significantly better spatial resolution (~8 au) than previously…

Solar and Stellar Astrophysics · Physics 2019-06-03 P. N. Diep , D. T. Hoai , N. B. Ngoc , P. T. Nhung , N. T. Phuong , T. T. Thai , P. Tuan-Anh

We present the first high-resolution ($\sim$ 0.14") Atacama Large Millimeter/submillimeter Array (ALMA) Band 6 dust continuum and CO molecular line emission observations of the quadruple system HD 34700. In particular, HD 34700AaAb is a…

Earth and Planetary Astrophysics · Physics 2026-03-18 J. Stadler , M. Benisty , F. Zagaria , A. F. Izquierdo , J. Speedie , A. J. Winter , L. Wölfer , J. Bae , S. Facchini , D. Fasano , N. Kurtovic , R. Teague

We present ALMA observations of a wide binary system in Orion, with projected separation 440 AU, in which we detect submillimeter emission from the protoplanetary disks around each star. Both disks appear moderately massive and have strong…

Variability of pre-main-sequence stars observed at optical wavelengths has been attributed tofluctuations in the mass accretion rate from the circumstellar disk onto the forming star.Detailed models of accretion disks suggest that young…

Solar and Stellar Astrophysics · Physics 2019-02-05 Logan Francis , Doug Johnstone , Michael M. Dunham , Todd R. Hunter , Steve Mairs

We report on the first open-use based Atacama Large Millimeter/submm Array (ALMA) 345-GHz observation for the late afterglow phase of GRB131030A. The ALMA observation constrained a deep limit at 17.1 d for the afterglow and host galaxy. We…

The planet-forming disk of HD 142527 is known for its azimuthally asymmetric dust trap, shadows, and spiral arms. We use new ALMA observations to investigate the molecular composition and to determine the ongoing chemical processes and the…

Earth and Planetary Astrophysics · Physics 2026-05-29 Milou Temmink , Ewine F. van Dishoeck , Alice S. Booth , Nienke van der Marel , Myriam Benisty , Michiel R. Hogerheijde

We forecast the abilities of the Atacama Large Millimeter/submillimeter Array (ALMA) and the Square Kilometer Array (SKA) to detect CO and HI emission lines in galaxies at redshift z=3. A particular focus is set on Milky Way (MW)…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-19 Danail Obreschkow , Ian Heywood , Steve Rawlings

We present new Atacama Large Millimeter/submillimeter Array (ALMA) observations of the dust continuum and [C II] 158 $\mu$m fine structure line emission towards a far-infrared-luminous quasar, ULAS J131911.29$+$095051.4 at $z=6.13$, and…

Gap-opening planets can generate dust-trapping vortices that may explain some of the latest discoveries of high-contrast crescent-shaped dust asymmetries in transition discs. While planet-induced vortices were previously thought to have…

Earth and Planetary Astrophysics · Physics 2018-11-07 Michael Hammer , Paola Pinilla , Kaitlin M. Kratter , Min-Kai Lin

Until recently, determining the rotational properties of galaxies in the early universe (z>4, Universe age <1.5Gyr) was impractical, with the exception of a few strongly lensed systems. Combining the high resolution and sensitivity of ALMA…

Astrophysics of Galaxies · Physics 2017-12-13 G. C. Jones , C. L. Carilli , Y. Shao , R. Wang , P. L. Capak , R. Pavesi , D. A. Riechers , A. Karim , M. Neeleman , F. Walter

Context. Multi-wavelength observations are indispensable in studying disk geometry and dust evolution processes in protoplanetary disks. Aims. We aimed to construct a 3-dimensional model of HD 163296 capable of reproducing simultaneously…

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

Cold neutral gas is a key ingredient for growing the stellar and central black hole mass in galaxies throughout cosmic history. We have used the Atacama Large Millimetre Array (ALMA) to detect a rare example of redshifted $^{12}$CO(2-1)…

We investigate the crescent-shaped dust trap in the transition disk, Oph IRS 48, using well-resolved (sub)millimeter polarimetric observations at ALMA Band 7 (870 $\mu$m). The dust polarization map reveals patterns consistent with dust…

Earth and Planetary Astrophysics · Physics 2024-02-21 Haifeng Yang , Manuel Fernández-López , Zhi-Yun Li , Ian W. Stephens , Leslie W. Looney , Zhe-Yu Daniel Lin , Rachel Harrison

We present Atacama Large Millimeter/submillimiter Array (ALMA) high sensitivity ($\sigma_P \simeq 0.4\,$mJy) polarimetric observations at $97.5\,$GHz (Band 3) of a complete sample of $32$ extragalactic radio sources drawn from the faint…

In this paper, we analyse the upper limit fluxes of sub-millimeter ortho-H$_{2}$$^{16}$O 321 GHz, para-H$_{2}$$^{18}$O 322 GHz, and HDO 335 GHz lines from the protoplanetary disk around the Herbig Ae star HD 163296, using the Atacama Large…

Earth and Planetary Astrophysics · Physics 2019-04-23 Shota Notsu , Eiji Akiyama , Alice Booth , Hideko Nomura , Catherine Walsh , Tomoya Hirota , Mitsuhiko Honda , Takashi Tsukagoshi , T. J. Millar

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…

We present the phase characteristics study of the Atacama Large Millimeter/submillimeter Array (ALMA) long (up to 3 km) baseline, which is the longest baseline tested so far using ALMA. The data consist of long time-scale (10 - 20 minutes)…

Instrumentation and Methods for Astrophysics · Physics 2015-06-23 Satoki Matsushita , Yoshiharu Asaki , Ryohei Kawabe , Ed Fomalont , Denis Barkats , Stuartt Corder

In order to study the initial conditions of planet formation, it is crucial to obtain spatially resolved multi-wavelength observations of the innermost region of protoplanetary discs. We evaluate the advantage of combining observations with…

Solar and Stellar Astrophysics · Physics 2019-02-20 Julia Kobus , Sebastian Wolf , Robert Brunngräber
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