431 citations · 710 across the 16 of their papers we have counts for
16 papers
Modelling shadows in scattered light observations as signals from companions in protoplanetary discs
Deniz Akansoy, Helen C. Petrou, Giulia Ballabio +1
Over the past decade, SPHERE scattered light observations of protoplanetary discs have revealed previously unseen features with unprecedented resolution. One such feature are radia…
The past, present and future of observations of externally irradiated disks
Planet formation environments collaboration, Megan Allen, Rossella Anania +51
Recent years have seen a surge of interest in the community studying the effect of ultraviolet radiation environment, predominantly set by OB stars, on protoplanetary disc evolutio…
Understanding what helium absorption tells us about atmospheric escape from exoplanets
Giulia Ballabio, James E. Owen
Atmospheric escape is now considered the major contributing factor in shaping the demographic of detected exoplanets. However, inferences about the exoplanet populations strongly d…
A tell-tale tracer for externally irradiated protoplanetary disks: comparing the [CI] 8727 A line and ALMA observations in proplyds
Mari-Liis Aru, Karina Mauco, Carlo F. Manara +15
The evolution of protoplanetary disks in regions with massive OB stars is influenced by externally driven winds that deplete the outer parts of disks. These winds have previously b…
JWST captures a sudden stellar outburst and inner disk wall destruction
Chengyan Xie, Ilaria Pascucci, Dingshan Deng +6
We present JWST/MIRI observations of T~Cha, a highly variable (3-5\,mag) accreting Sun-like star surrounded by a disk with a large (\,au) dust gap. We find that t…
Modeling JWST MIRI-MRS Observations of T Cha: Mid-IR Noble Gas Emission Tracing a Dense Disk Wind
Andrew D. Sellek, Naman S. Bajaj, Ilaria Pascucci +8
[Ne II] 12.81 emission is a well-used tracer of protoplanetary disk winds due to its blueshifted line profile. MIRI-MRS recently observed T Cha, detecting this line a…
JWST MIRI/MRS Observations of T Cha: Discovery of a Spatially Resolved Disk Wind
Naman S. Bajaj, Ilaria Pascucci, Uma Gorti +8
Understanding when and how circumstellar disks disperse is crucial to constrain planet formation and migration. Thermal winds powered by high-energy stellar photons have long been…
The VLT MUSE NFM view of outflows and externally photoevaporating discs near the Orion Bar
Thomas J. Haworth, Megan Reiter, C. Robert O'Dell +10
We present VLT/MUSE Narrow Field Mode (NFM) observations of a pair of disc-bearing young stellar objects towards the Orion Bar: 203-504 and 203-506. Both of these discs are subject…
[OI] 6300Å emission as a probe of external photoevaporation of protoplanetary discs
Giulia Ballabio, Thomas J. Haworth, W. J. Henney
We study the utility of the [OI] 6300 forbidden line for identifying and interpreting externally driven photoevaporative winds in different environments and a…
An APEX search for carbon emission from NGC 1977 proplyds
Thomas J. Haworth, Jinyoung S. Kim, Lin Qiao +8
We used the Atacama Pathfinder Experiment (APEX) telescope to search for CI 1-0 (492.16GHz) emission towards 8 proplyds in NGC 1977, which is an FUV radiation environment two order…
HD 143006: circumbinary planet or misaligned disc?
G. Ballabio, R. Nealon, R. D. Alexander +3
Misalignments within protoplanetary discs are now commonly observed, and features such as shadows in scattered light images indicate departure from a co-planar geometry. VLT/SPHERE…
Proplyds in the Flame Nebula NGC 2024
Thomas J. Haworth, Jinyoung S. Kim, Andrew J. Winter +5
A recent survey of the inner pc of the NGC 2024 star forming region revealed two distinct millimetre continuum disc populations that appear to be spatially segregat…
The Evolution of Disk Winds from a Combined Study of Optical and Infrared Forbidden Lines
I. Pascucci, A. Banzatti, U. Gorti +18
We analyze high-resolution (dv=<10km/s) optical and infrared spectra covering the [OI] 6300 angstrom and [NeII] 12.81 micron lines from a sample of 31 disks in different evolutiona…
Forbidden line diagnostics of photoevaporative disc winds
G. Ballabio, R. D. Alexander, C. J. Clarke
Photoevaporation driven by high energy radiation from the central star plays an important role in the evolution of protoplanetary discs. Photoevaporative winds have been unambiguou…
Enforcing dust mass conservation in 3D simulations of tightly-coupled grains with the Phantom SPH code
Giulia Ballabio, Giovanni Dipierro, Benedetta Veronesi +4
We describe a new implementation of the one-fluid method in the SPH code Phantom to simulate the dynamics of dust grains in gas protoplanetary discs. We revise and extend previousl…
Phantom: A smoothed particle hydrodynamics and magnetohydrodynamics code for astrophysics
Daniel J. Price, James Wurster, Terrence S. Tricco +24
We present Phantom, a fast, parallel, modular and low-memory smoothed particle hydrodynamics and magnetohydrodynamics code developed over the last decade for astrophysical applicat…