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(abridged) The Atacama Large Millimeter/submillimeter Array (ALMA) was the top-ranked priority for a new ground-based facility in the 2000 Canadian Long Range Plan. Ten years later, at the time of LRP2010, ALMA construction was well…

ALMA has been operating since 2011, but has not yet been populated with the full suite of intended frequency bands. In particular, ALMA Band 2 (67-90 GHz) is the final band in the original ALMA band definition to be approved for production.…

High-dimensional astronomical data cubes provide a wealth of spectral and structural information that can be used to study astrophysical and chemical processes. The complexity and sheer size of these datasets pose significant challenges in…

Instrumentation and Methods for Astrophysics · Physics 2025-12-18 Haley N. Scolati , Ryan A. Loomis , Anthony J. Remijan , Kin Long Kelvin Lee

The Atacama Large millimetre/submillimetre Array (ALMA) makes use of water vapour radiometers (WVR), which monitor the atmospheric water vapour line at 183 GHz along the line of sight above each antenna to correct for phase delays…

Instrumentation and Methods for Astrophysics · Physics 2017-09-20 L. T. Maud , R. P. J. Tilanus , T. A. van Kempen , M. R. Hogerheijde , M. Schmalzl , I. Yoon , Y. Contreras , M. C. Toribio , Y. Asaki , W. R. F. Dent , E. Fomalont , S. Matsushita

The present constraints on fundamental constant variation (\alpha and \mu) obtained in the radio range are reviewed, coming essentially from absorption lines in front of quasars of intermediate to high-z galaxies, through CO, HI, OH, HCO+,…

Cosmology and Nongalactic Astrophysics · Physics 2009-10-06 F. Combes

We use the Atacama Large sub/Millimetre Array (ALMA) to efficiently observe spectral lines across Bands 3, 4, 5, 6, 7, and 8 at high-resolution (0.5" - 0.1") for 16 bright southern Herschel sources at $1.5 < z < 4.2$. With only six and a…

In recent years, ALMA has been able to observe large-scale substructures within protoplanetary disks. Comparison with the predictions from models of planet-disk interaction has indicated that most of these disk substructures can be…

Earth and Planetary Astrophysics · Physics 2022-04-06 Benjamin Burrill , Luca Ricci , Sarah Harter , Shangjia Zhang , Zhaohuan Zhu

ALMA is a revolutionary radio telescope at present and its full operation will start from 2012. It is expected that ALMA will resolve several cosmic questions and will show a new cosmic view to us. Our passion for astronomy naturally goes…

Instrumentation and Methods for Astrophysics · Physics 2011-06-20 Masao Saito , Satoru Iguchi

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

We present a high-resolution (2.5 au) multiband analysis of the protoplanetary disk around TW Hya using ALMA long baseline data at Bands 3, 4, 6, and 7. We aim to reconstruct a high-sensitivity millimeter continuum image and revisit the…

The Atacama Large Millimeter Array (ALMA) consists of 64 antennas of 12m diameter that will initially observe in 4 frequency bands between 84 and 720 GHz with spatial resolutions down to 0.01" and velocity resolutions as fine as 0.05 km/s.…

Astrophysics · Physics 2007-05-23 Carlos De Breuck

(abridged) The Atacama Large Aperture Submillimeter Telescope (AtLAST) project aims to build a 50-m-class submm telescope with $>1^\circ$ field of view, high in the Atacama Desert, providing fast and detailed mapping of the mm/submm sky. It…

Instrumentation and Methods for Astrophysics · Physics 2019-07-09 Christopher Groppi , Andrey Baryshev , Urs Graf , Martina Wiedner , Pamela Klaassen , Tony Mroczkowski

This White Paper proposes a unique milli-Jansky sensitive arcsecond resolution VLA 15 GHz (Ku band) continuum polarization imaging survey of the Galactic plane using C array configuration. The science driver is to fill the gap between…

Instrumentation and Methods for Astrophysics · Physics 2013-12-25 Lorant O. Sjouwerman , Elisabeth A. C. Mills

In this short review we will highlight some of the recent advancements in the field of high-resolution laboratory spectroscopy that meet the needs dictated by the advent of highly sensitive and broadband telescopes like ALMA and SOFIA.…

Instrumentation and Methods for Astrophysics · Physics 2016-05-25 Sandra Brünken , Stephan Schlemmer

Precise cosmological measurements are essential for understanding the evolution of the universe and the nature of dark energy. The Five-hundred-meter Aperture Spherical Telescope (FAST), the most sensitive single-dish radio telescope, has…

Cosmology and Nongalactic Astrophysics · Physics 2025-01-23 Jun-Da Pan , Peng-Ju Wu , Guo-Hong Du , Yichao Li , Xin Zhang

The rich information on (sub)millimeter dust continuum emission from distant galaxies in the public Atacama Large Millimeter/submillimeter Array (ALMA) archive is contained in thousands of inhomogeneous observations from individual PI-led…

We report the discovery of a brightness enhancement in the center of a large sunspot umbra at a wavelength of 3 mm using the Atacama Large Millimeter/sub-millimeter Array (ALMA). Sunspots are amongst the most prominent features on the solar…

Solar and Stellar Astrophysics · Physics 2017-05-31 Kazumasa Iwai , Maria Loukitcheva , Masumi Shimojo , Sami K. Solanki , Stephen M. White

ALMA will open a new chapter in the study of the Sun by providing a leap in spatial resolution and sensitivity compared to currently available mm wave- length observations. In preparation of ALMA, we have carried out a large number of…

Solar and Stellar Astrophysics · Physics 2015-12-15 Maria Loukitcheva , Sami K. Solanki , Stephen M. White , Mats Carlsson