English
Related papers

Related papers: Nulling interferometry: performance comparison bet…

200 papers

The high Antarctic plateau provides exceptional conditions for conducting infrared observations of the cosmos on account of the cold, dry and stable atmosphere above the ice surface. This paper describes the scientific goals behind the…

Many low-mass pre-main-sequence stars exhibit strong magnetic activity and coronal X-ray emission. Even after the primordial accretion disk has been cleared out, the star's high-energy radiation continues to affect the formation and…

Solar and Stellar Astrophysics · Physics 2015-06-16 Steven R. Cranmer , David J. Wilner , Meredith A. MacGregor

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

We report the discovery of a circumstellar disk around the young A0 star, HR 4796, in thermal infrared imaging carried out at the W.M. Keck Observatory. By fitting a model of the emission from a flat dusty disk to an image at lambda=20.8…

Astrophysics · Physics 2009-10-30 D. W. Koerner , M. E. Ressler , M. W. Werner , D. E. Backman

In this paper we present simulated observations of massive self-gravitating circumstellar discs using the Atacama Large Millimetre/sub-millimetre Array (ALMA). Using a smoothed particle hydrodynamics model of a $0.2M_{\odot}$ disc orbiting…

Solar and Stellar Astrophysics · Physics 2015-05-18 P. Cossins , G. Lodato , L. Testi

Polarized thermal emission from Galactic dust is the dominant foreground for CMB polarization measurements at high frequencies, with its statistical properties set by the interplay between turbulence and magnetic fields in the multiphase…

Astrophysics of Galaxies · Physics 2026-01-27 Yue Hu , Bao Truong , Thiem Hoang , Le Ngoc Tram

We report the detection of an excess in dust continuum emission at 233~GHz (1.3~mm in wavelength) in the protoplanetary disk around TW~Hya revealed through high-sensitivity observations at $\sim$3~au resolution with the Atacama Large…

Dark energy is an important science driver of many upcoming large-scale surveys. With small, stable seeing and low thermal infrared background, Dome A, Antarctica, offers a unique opportunity for shedding light on fundamental questions…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Gong-Bo Zhao , Hu Zhan , Lifan Wang , Zuhui Fan , Xinmin Zhang

We present a detailed analysis for a subset of the high resolution (~35 mas, or 5 au) ALMA observations from the Disk Substructures at High Angular Resolution Project (DSHARP) to search for faint 1.3 mm continuum emission associated with…

The non transparency and severe propagation effects of the terrestrial ionosphere make it impossible for Earth based instruments to study the universe at low radio frequencies. An exploration of the low frequency radio window with the…

Astrophysics · Physics 2007-05-23 Divya Oberoi , Jean-Louis Pinçon

The settling of dust particles plays a critical role in the growth and dynamics of dust grains. We performed a detailed modeling of the ALMA continuum substructures for six highly inclined protoplanetary discs using radiative transfer…

Earth and Planetary Astrophysics · Physics 2026-05-11 Juanita Antilen , Paola Pinilla , Dafa Li , Marion Villenave , Anibal Sierra , Yao Liu , Myriam Benisty , Christian Ginski

The majority of debris discs discovered so far have only been detected through infrared excess emission above stellar photospheres. While disc properties can be inferred from unresolved photometry alone under various assumptions for the…

Past and recent observations have revealed unexpected variations in the FIR-mm dust emissivity. In the Herschel spectral range, those are often referred to as a 500{\mu}m emission excess. Several dust emission models have been developed to…

We present deep high-resolution ($\sim$50 mas, 8 au) ALMA 0.88 and 1.3 mm continuum observations of the LkCa 15 disk. The emission morphology shows an inner cavity and three dust rings at both wavelengths, but with slightly narrower rings…

We identify optical emission-line features 700" (12 kpc) southwest of the nucleus of Centaurus A, roughly opposite the radio jet and well-known optical emission filaments associated with the northern radio structure. These regions are…

Astrophysics of Galaxies · Physics 2019-01-30 William C. Keel , Julie K. Banfield , Anne Medling , Susan G. Neff

We aim to explore the capabilities of dust emission and rays for probing the properties of the interstellar medium in the nearby anti-centre region, using gamma-ray observations with the Fermi Large Area Telescope (LAT), and the thermal…

High Energy Astrophysical Phenomena · Physics 2017-05-10 Q. Remy , I. A. Grenier , D. J. Marshall , J. M. Casandjian

Quasars at the dawn of Cosmic Time ($z>6$) are fundamental probes to investigate the early co-evolution of supermassive black holes and their host galaxy. Nevertheless, their infrared spectral energy distribution remains at the present time…

Astrophysics of Galaxies · Physics 2026-02-18 M. Costa , R. Decarli , F. Pozzi , P. Cox , R. A. Meyer , A. Pensabene , B. P. Venemans , F. Walter , F. Xu

ICE-T (International Concordia Explorer Telescope) is a double 60 cm f/1.1 photometric robotic telescope, on a parallactic mount, which will operate at Dome C, in the long Antarctic night, aiming to investigate exoplanets and activity of…

Instrumentation and Methods for Astrophysics · Physics 2015-05-14 I. Di Varano , K. G. Strassmeier , T. Granzer , M. Woche

ALMA-IMF is a large program of the Atacama Large Millimeter/submillimeter Array (ALMA) that aims to determine the origin of the core mass function (CMF) of 15 massive Galactic protoclusters (~ 1.0-25.0 x 10^3 solar mass within ~ 2.5 x 2.5…

While high resolution ALMA observations reveal a wealth of substructure in protoplanetary discs, they remain incapable of resolving the types of small scale dust structures predicted, for example, by numerical simulations of the streaming…

Earth and Planetary Astrophysics · Physics 2024-06-18 Chiara E. Scardoni , Richard A. Booth , Cathie J. Clarke , Giovanni P. Rosotti , Alvaro Ribas