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Molecular Gas Clumps from the Destruction of Icy Bodies in the β Pictoris Debris Disk
(2014-03-28)
Many stars are surrounded by disks of dusty debris formed in the collisions of asteroids, comets, and
dwarf planets, but is gas also released in such events? Observations at submillimeter wavelengths of
the archetypal ...
Anomalias dentales en pacientes que asisten a la consulta particular e institucional en la ciudad de Cali 2009-2010.
(2011-10-14)
Objetivos: Identificar anomalías dentales en pacientes que asistieron a la consulta particular e institucional en un periodo comprendido entre Septiembre de 2009 a Enero de 2010. Materiales y métodos: Se realizó un estudio ...
CO(6−5) and [C i](2−1) pointed observations of five protoplanetary disks: Warm gas in HD 142527
(EDP Sciences, 2013-05)
Context. The molecular gas in protoplanetary disks can be traced with single-dish instruments in low J rotational lines of CO, in systems
clear of coincident extended emission. Other rotational lines of CO also sample the ...
Dust and gas in the disk of HL TAURI: surface density, dust settling, and dust-to-gas ratio
(IOP Publishing, 2016)
The recent ALMA observations of the disk surrounding HL Tau reveal a very complex dust spatial distribution. We present a radiative transfer model accounting for the observed gaps and bright rings as well as radial changes ...
A co survey in planet-forming disks: characterizing the gas content in the epoch of planet formation
(The American Astronomical Society., 2014-07-31)
We carried out a 12CO(3-2) survey of 52 southern stars with a wide range of IR excesses (L IR/L *) using the single-dish telescopes APEX and ASTE. The main aims were (1) to characterize the evolution of molecular gas in ...
The Circumstellar Disk and Asymmetric Outflow of the EX Lup Outburst System
(Institute of Physics Publishing, 2018)
We present Atacama Large Millimeter/submillimeter Array (ALMA) observations at 0farcs3 resolution of EX Lup, the prototype of the EXor class of outbursting pre-main-sequence stars. The circumstellar disk of EX Lup is ...
Observations of gas flows inside a protoplanetary gap
(Nature Publishing Group, 2013-01-10)
The formation of gaseous giant planets is thought to occur in the first few million years after stellar birth. Models1 predict that the process produces a deep gap in the dust component (shallower in the gas2, 3, 4). ...
Nature of the gas and dust around 51 Ophiuchi : Modelling continuum and Herschel line observations
(EDP Sciences, 2013)
Context. Circumstellar disc evolution is paramount for the understanding of planet formation. The gas in protoplanetary discs
large program (GASPS) aims at determining the circumstellar gas and solid mass around ∼250 ...
Nine Localized Deviations from Keplerian Rotation in the DSHARP Circumstellar Disks: Kinematic Evidence for Protoplanets Carving the Gaps
(IOP Publishing, 2020)
We present evidence for localized deviations from Keplerian rotation, i.e., velocity "kinks," in 8 of the 18 circumstellar disks observed by the DSHARP program: DoAr 25, Elias 2-27, GW Lup, HD 143006, HD 163296, IM Lup, ...
Resolving the planetesimal belt of HR 8799 with ALMA
(Oxford University Press, 2016)
The star HR 8799 hosts one of the largest known debris discs and at least four giant planets. Previous observations have found evidence for a warm belt within the orbits of the planets, a cold planetesimal belt beyond their ...