431 citations · 1.2k across the 44 of their papers we have counts for
47 papers
Planet formation on solar system scales
Francesco Zagaria, Andrés F. Izquierdo, Jaehan Bae +32
Giant planets are often regarded as primordial protoplanetary "architects". Their formation and interactions with planetesimals and other planets during and after the protoplanetar…
Planet forming disk populations and their connection to the environment
Thomas J. Haworth, Giovanni Rosotti, Carlo Manara +35
Existing sub-mm observatories such as ALMA have provided statistics on the planet-forming mass reservoirs within circumstellar disks around stars in stellar clusters out to distanc…
Three-dimensional simulations of accretion disks in pre-CE systems -- II. Accretion efficiency and angular momentum transport
Ana L. Juarez-Garcia, Mike Y. M. Lau, Orsola De Marco +3
Rapid mass transfer preceding a common envelope event is a critical yet poorly understood stage of binary stellar evolution, setting the initial conditions for the common envelope…
Triggered Fragmentation in Self-Gravitating Protoplanetary discs: Cooling, Mass Movement and Instability
Pratishtha Rawat, Farzana Meru, Rebecca Nealon
Previous three-dimensional hydrodynamical simulations of gravitationally unstable discs have shown that the formation of a single fragment can trigger the formation of subsequent f…
Evidence for Supermassive Black Hole Binaries
Martin G. H. Krause, Martin A. Bourne, Silke Britzen +10
We review the state of the evidence for the existence and observational appearance of supermassive black hole binaries. Such objects are expected from standard hierarchical galaxy…
Converged simulations of the nozzle shock in tidal disruption events
Fangyi Fitz Hu, Ilya Mandel, Rebecca Nealon +1
When debris from a star that experienced a tidal disruption events (TDE) after passing too close to a massive black hole returns to pericenter on the second passage, it is compress…
Leading & Trailing Spiral Arms in a Nearly Broken Protoplanetary Disc
Sahl Rowther, Rebecca Nealon, Richard Alexander +1
We perform three-dimensional smoothed particle hydrodynamics simulations to investigate the formation of spiral arms in misaligned circumbinary discs. In a nearly broken disc the m…
Tracing the formation and migration history: molecular signatures in the atmosphere of misaligned hot Jupiter WASP-94Ab using JWST NIRSpec/G395H
Eva-Maria Ahrer, Siddharth Gandhi, Lili Alderson +12
The discovery of hot Jupiters that orbit very close to their host stars has long challenged traditional models of planetary formation and migration. Characterising their atmospheri…
Disc-planet misalignment from an unstable triple system: IRAS04125
Rebecca Nealon, Jeremy L. Smallwood, Hossam Aly +5
The IRAS01425+2902 wide binary system was recently reported to have both a young planet and a puzzling geometric arrangement, where the planet and binary both orbit edge-on, but mi…
Modelling a Transiting Circumbinary Disc in the HD98800 System
Amena Faruqi, Grant Kennedy, Rebecca Nealon +1
We present synthetic optical light curves of the hierarchical HD98800 quadruple system over a decade-long period when the circumbinary disc encircling the system's B binary is expe…
Shedding light on the origin of the broken misaligned circumtriple disk around GW Ori
Jeremy L. Smallwood, Stephen H. Lubow, Rebecca G. Martin +1
We revisit the origin of the observed misaligned rings in the circumtriple disk around GW Ori. Previous studies appeared to disagree on whether disk breaking is caused by the diffe…
Observational Signatures of Dust Traffic Jams in Polar-Aligning Circumbinary Disks
Jeremy L. Smallwood, Rebecca Nealon, Hsi-Wei Yen +4
Misaligned circumbinary disks will produce dust traffic jams during alignment or anti-alignment to the binary orbital plane. We conduct a hydrodynamical simulation of an initially…
Polar alignment of a dusty circumbinary disc -- II. Application to 99 Herculis
Jeremy L. Smallwood, Min-Kai Lin, Rebecca Nealon +2
We investigate the formation of dust traffic jams in polar-aligning circumbinary discs. In our first paper, we found as the circumbinary disc evolves towards a polar configuration…
Adaptive particle refinement for compressible smoothed particle hydrodynamics
Rebecca Nealon, Daniel Price
We introduce adaptive particle refinement for compressible smoothed particle hydrodynamics (SPH). SPH calculations have the natural advantage that resolution follows mass, but this…
Short-Lived Gravitational Instability in Isolated Irradiated Discs
Sahl Rowther, Daniel J. Price, Christophe Pinte +3
Irradiation from the central star controls the temperature structure in protoplanetary discs. Yet simulations of gravitational instability typically use models of stellar irradiati…
Polar alignment of a dusty circumbinary disc -- I. Dust ring formation
Jeremy L. Smallwood, Min-Kai Lin, Hossam Aly +2
We investigate the formation of dust traffic jams in polar-aligning circumbinary discs. We use 3D smoothed particle hydrodynamical simulations of both gas and dust to model an init…
V892 Tau: A tidally perturbed circumbinary disc in a triple stellar system
Antoine Alaguero, Nicolás Cuello, François Ménard +8
V892 Tau is a young binary star surrounded by a circumbinary disc which show hints of interaction with the low-mass nearby star V892 Tau NE. The goal of this paper is to constrain…
Atmospheric characterisation and tighter constraints on the orbital misalignment of WASP-94 A b with HARPS
E. Ahrer, J. V. Seidel, L. Doyle +10
We present high spectral resolution observations of the hot Jupiter WASP-94 A b using the HARPS instrument on ESO's 3.6m telescope in La Silla, Chile. We probed for Na absorption i…
The orbit of HD 142527 B is too compact to explain many of the disc features
M. Nowak, S. Rowther, S. Lacour +3
HD 142527 A is a young and massive Herbig Ae/Be star surrounded by a highly structured disc. The disc shows numerous morphological structures, such as spiral arms, a horseshoe regi…
The Role of Drag and Gravity on Dust Concentration in a Gravitationally Unstable Disc
Sahl Rowther, Rebecca Nealon, Farzana Meru +5
We carry out three dimensional smoothed particle hydrodynamics simulations to study the role of gravitational and drag forces on the concentration of large dust grains (St > 1) in…
WInDI: a Warp-Induced Dust Instability in protoplanetary discs
Hossam Aly, Rebecca Nealon, Jean-François Gonzalez
We identify a new dust instability that occurs in warped discs. The instability is caused by the oscillatory gas motions induced by the warp in the bending wave regime. We first de…
Formation of misaligned second-generation discs through flyby encounters
Jeremy L. Smallwood, Rebecca Nealon, Nicolás Cuello +2
Observations reveal protoplanetary discs being perturbed by flyby candidates. We simulate a scenario where an unbound perturber, i.e., a flyby, undergoes an inclined grazing encoun…
The surprising evolution of the shadow on the TW Hya disk
J. Debes, R. Nealon, R. Alexander +8
We report new total intensity visible light high contrast imaging of the TW Hya disk taken with the Space Telescope Imaging Spectrograph (STIS) on the Hubble Space Telescope (HST).…
Continuing to Hide Signatures of Gravitational Instability in Protoplanetary Discs with Planets
Sahl Rowther, Rebecca Nealon, Farzana Meru
We carry out three dimensional smoothed particle hydrodynamics simulations to study the impact of planet-disc interactions on a gravitationally unstable protoplanetary disc. We fin…