98 citations · 320 across the 13 of their papers we have counts for
13 papers
Hourly radio variability of PDS70c from time-differential photometry
Simon Casassus, Miguel Carcamo, Oriana Dominguez-Jamett +5
The radio emission mechanisms from accreting protoplanets, and their variability, link observations and physical properties. We revisit the variability of the ~343GHz (ALMA Band7)…
Multi-frequency observations of PDS 70c: Radio emission mechanisms in the circum-planetary environment
Oriana Domínguez-Jamett, Simon Casassus, Hauyu Baobab Liu +7
PDS 70c is a source of Ha emission and variable sub-mm signal. Understanding its emission mechanisms may enable observations of accretion rates and physical conditions in the circu…
Spirals and clumps in V960 Mon: signs of planet formation via gravitational instability around an FU Ori star?
P. Weber, S. Pérez, A. Zurlo +11
The formation of giant planets has traditionally been divided into two pathways: core accretion and gravitational instability. However, in recent years, gravitational instability h…
The Doppler-flip in HD100546 as a disk eruption: the elephant in the room of kinematic protoplanet searches
Simon Casassus, Miguel Carcamo, Antonio Hales +2
The interpretation of molecular-line data in terms of hydro dynamical simulations of planet-disk interactions fosters new hopes for the indirect detection of protoplanets. In a mod…
Variable structure in the PDS70 disc and uncertainties in radio-interferometric image restoration
Simon Casassus, Miguel Carcamo
The compact mm-wavelength signal in the central cavity of the PDS70 disc, revealed by deep ALMA observations, is aligned with unresolved Halpha emission, and is thought to stem fro…
High-resolution ALMA observations of V4046Sgr: a circumbinary disc with a thin ring
Rafael Martinez-Brunner, Simon Casassus, Sebastián Pérez +8
The nearby V4046 Sgr spectroscopic binary hosts a gas-rich disc known for its wide cavity and dusty ring. We present high resolution (20 mas or 1.4 au) ALMA observations of t…
A dusty filament and turbulent CO spirals in HD135344B-SAO206462
Simon Casassus, Valentin Christiaens, Miguel Carcamo +16
Planet-disc interactions build up local pressure maxima that may halt the radial drift of protoplanetary dust, and pile it up in rings and crescents. ALMA observations of the HD135…
Gaussian Process Modelling for Improved Resolution in Faraday Depth Reconstruction
S. W. Ndiritu, A. M. M. Scaife, D. L. Tabb +2
The incomplete sampling of data in complex polarization measurements from radio telescopes negatively affects both the rotation measure (RM) transfer function and the Faraday depth…
Resolved observations at 31 GHz of spinning dust emissivity variations in Oph
Carla Arce-Tord, Matias Vidal, Simon Casassus +9
The Oph molecular cloud is one of the best examples of spinning dust emission, first detected by the Cosmic Background Imager (CBI). Here we present 4.5 arcmin observations wit…
Cm-wavelength observations of MWC758: resolved dust trapping in a vortex
Simon Casassus, Sebastian Marino, Wladimir Lyra +13
The large crescents imaged by ALMA in transition disks suggest that azimuthal dust trapping concentrates the larger grains, but centimetre-wavelengths continuum observations are re…
An inner warp in the DoAr 44 T Tauri transition disk
Simon Casassus, Henning Avenhaus, Sebastian Perez +11
Optical/IR images of transition disks (TDs) have revealed deep intensity decrements in the rings of HAeBes HD142527 and HD100453, that can be interpreted as shadowing from sharply…
ALMA observations of Elias 2-24: a protoplanetary disk with multiple gaps in the Ophiuchus Molecular Cloud
Lucas A. Cieza, Simon Casassus, Sebastian Perez +21
We present ALMA 1.3 mm continuum observations at 0.2" (25 au) resolution of Elias 2-24, one of the largest and brightest protoplanetary disks in the Ophiuchus Molecular Cloud, and…
Multi-GPU maximum entropy image synthesis for radio astronomy
M. Cárcamo, P. Román, S. Casassus +2
The maximum entropy method (MEM) is a well known deconvolution technique in radio-interferometry. This method solves a non-linear optimization problem with an entropy regularizatio…