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Leveraging the high resolution, high sensitivity, and wide frequency coverage of the Atacama Large Millimeter/submillimeter Array (ALMA), the QUARKS survey, standing for "Querying Underlying mechanisms of massive star formation with…

The Atacama Large Millimeter/submillimeter Array (ALMA) is an international radio telescope under construction in the Atacama Desert of northern Chile. ALMA will be situated on a high-altitude site at 5000 m elevation which provides…

Astrophysics · Physics 2011-04-11 A. J. Beasley , R. Murowinski , M. Tarenghi

Based on Atacama Large Millimeter/submillimeter Array (ALMA) observations, compact protoplanetary disks with dust radii of $r\lesssim 20-40$ au were found to be dominant in nearby low-mass star formation regions. However, their…

Earth and Planetary Astrophysics · Physics 2021-12-22 Masayuki Yamaguchi , Takashi Tsukagoshi , Takayuki Muto , Hideko Nomura , Takeshi Nakazato , Shiro Ikeda , Motohide Tamura , Ryohei Kawabe

The Atacama Large Millimeter/submillimeter Array (ALMA) is an international radio telescope under construction in the Atacama Desert of northern Chile. ALMA is situated on a dry site at 5000 m elevation, allowing excellent atmospheric…

Instrumentation and Methods for Astrophysics · Physics 2015-05-13 Alwyn Wootten , A. Richard Thompson

Numerical simulations of the solar chromosphere predict a diverse thermal structure with both hot and cool regions. Observations of plage regions in particular feature broader and brighter chromospheric lines, which suggest that they are…

Solar and Stellar Astrophysics · Physics 2020-02-12 J. M. da Silva Santos , J. de la Cruz Rodríguez , J. Leenaarts , G. Chintzoglou , B. De Pontieu , S. Wedemeyer , M. Szydlarski

We present four daytime thermal images of Europa taken with the Atacama Large Millimeter Array. Together, these images comprise the first spatially resolved thermal dataset with complete coverage of Europa's surface. The resulting…

Earth and Planetary Astrophysics · Physics 2018-10-31 Samantha K. Trumbo , Michael E. Brown , Bryan J. Butler

We present high-resolution (0.16$"$) 870um Atacama Large Millimeter/submillimeter Array (ALMA) imaging of 16 luminous (L_IR ~ 4 x 10^12 L_sun) submillimeter galaxies (SMGs) from the ALESS survey of the Extended Chandra Deep Field South.…

The observational study of stars in the sub-millimetre regime has only rather recently begun and was made possible mainly by the Atacama Large Millimeter/submillimeter Array (ALMA). The emission mechanisms of this radiation from normal MS…

Solar and Stellar Astrophysics · Physics 2019-04-08 Rene' Liseau

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 Atacama Large Millimeter Array (ALMA) polarization observations at 97.5 GHz of the southern hot spot of the radio galaxy 3C 445. The hot spot structure is dominated by two bright components enshrouded by diffuse emission. Both…

High Energy Astrophysical Phenomena · Physics 2017-06-21 M. Orienti , G. Brunetti , H. Nagai , R. Paladino , K. -H. Mack , M. A. Prieto

We present high resolution (0.3") Atacama Large Millimeter Array (ALMA) 870um imaging of five z~1.5-4.5 X-ray detected AGN with luminosities of L(2-8keV)>10^42 erg/s. These data provide a >~20x improvement in spatial resolution over…

Astrophysics of Galaxies · Physics 2016-02-17 C. M. Harrison , J. M. Simpson , F. Stanley , D. M. Alexander , E. Daddi , J. R. Mullaney , M. Pannella , D. J. Rosario , Ian Smail

Among the numerous known extrasolar planets, only a handful have been imaged directly so far, at large orbital radii and in rather evolved systems. The Atacama Large Millimeter/submillimeter Array (ALMA) will have the capacity to observe…

Solar and Stellar Astrophysics · Physics 2015-06-16 Jean-François Gonzalez , Christophe Pinte , Sarah T. Maddison , François Ménard

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

The Atacama Large Millimeter/submillimeter Array (ALMA), presently under construction, is a revolutionary astronomical interferometer, that will operate at (sub)millimeter wavelengths. With unprecedented sensitivity, resolution, and imaging…

Instrumentation and Methods for Astrophysics · Physics 2010-10-19 V. Casasola , J. Brand

Aims. We use advanced 3D NLTE radiative magnetohydrodynamic simulations of the solar atmosphere to carry out detailed tests of chromospheric diagnostics at millimeter and submillimeter wavelengths. Methods. We focused on the diagnostics of…

Solar and Stellar Astrophysics · Physics 2015-02-18 Maria Loukitcheva , Sami Solanki , Mats Carlsson , Stephen White

Our understanding of the formation and evolution of planetary systems has made major advances in the past decade. This progress has been driven in large part by the Atacama Large Millimeter/submillimeter Array (ALMA), which has given us an…

Earth and Planetary Astrophysics · Physics 2026-02-09 Katherine de Kleer , Michael E. Brown , Martin Cordiner , Richard Teague

We present Atacama Large Millimetre Array (ALMA) 2mm continuum observations of a complete and unbiased sample of 99 870micron-selected sub-millimeter galaxies (SMGs) in the Extended Chandra Deep Field South (ALESS). Our observations of each…

We have analyzed the data from a large-scale CO survey toward the northern region of the Small Magellanic Cloud (SMC) obtained with the Atacama Compact Array (ACA) stand-alone mode of ALMA. The primary aim of this study is to…

We present initial results of very high resolution Atacama Large Millimeter/submillimeter Array (ALMA) observations of the $z$=3.042 gravitationally lensed galaxy HATLAS J090311.6+003906 (SDP.81). These observations were carried out using a…

Spiral structures have been detected in evolved protostellar disks, driving the disk accretion towards the central protostars to facilitate star formation. However, it is still unclear if these structures can form earlier in young…

Astrophysics of Galaxies · Physics 2023-07-05 Chin-Fei Lee , Kai-Syun Jhan , Anthony Moraghan