230 citations · 1.1k across the 39 of their papers we have counts for
34 papers · 1 filter
Beyond static torques: Self-consistent migration and dynamical trapping of low-mass planets in dusty disks
Jose L. Gomez, Pablo Benitez-Llambay, Ximena S. Ramos +1
The rapid inward migration of low-mass planets remains a primary theoretical challenge in planet formation. While recent studies show that the solid component of protoplanetary dis…
Protoplanetary disc population synthesis I. Linking mass-dependent viscosity, star formation history and environment to observations
Jose L. Gomez, Octavio M. Guilera, Marcelo M. Miller Bertolami +2
Context. Recent studies highlight the importance of stellar mass sampling when determining disc lifetimes through observed disc fractions. Low-mass stars host discs with average li…
The Ophiuchus DIsk Survey Employing ALMA (ODISEA): A Unified Evolutionary Sequence of Planet-Driven Substructures Explaining the Diversity of Disk Morphologies
Santiago Orcajo, Lucas A. Cieza, Octavio Guilera +21
Understanding the origin of substructures in protoplanetary disks and their connection to planet formation is currently one of the main challenges in astrophysics. While some disks…
Ionized envelopes around protoplanets and the role of radiative feedback in gas accretion
Matías Montesinos, Juan Garrido-Deutelmoser, Jorge Cuadra +5
Planetary growth within protoplanetary disks involves accreting material from their surroundings, yet the underlying mechanisms and physical conditions of the accreting gas remain…
From Streaming Instability to the Onset of Pebble Accretion I. Investigating the Growth Modes in Planetesimal Rings
Nicolas Kaufmann, Octavio M. Guilera, Yann Alibert +1
Context. The localized formation of planetesimals can be triggered with the help of streaming instability when the local pebble density is high. This can happen at various location…
The Ophiuchus DIsk Survey Employing ALMA (ODISEA): Complete Size Distributions for the 100 Brightest Disks Across Multiplicity and SED Classes
Anuroop Dasgupta, Lucas A. Cieza, Camilo I. Gonzalez Ruilova +16
The size of a protoplanetary disk is a fundamental property, yet most remain unresolved, even in nearby star-forming regions (d 140-200 pc). We present the complete continuu…
Quantifying the Impact of the Dust Torque on the Migration of Low-mass Planets II: The Role of Pebble Accretion in Planet Growth within a Global Planet Formation Model
Octavio M. Guilera, Pablo Benitez-Llambay, Marcelo M. Miller Bertolami +1
Although dust constitutes only about 1% of the mass of a protoplanetary disk, recent studies demonstrate that it can exert a significant torque on low- and intermediate-mass planet…
A fading radius valley towards M-dwarfs, a persistent density valley across stellar types
Julia Venturini, María Paula Ronco, Octavio M. Guilera +3
The radius valley separating super-Earths from mini-Neptunes is a fundamental benchmark for theories of planet formation and evolution. Observations show that the location of the r…
Planetesimal and planet formation in transient dust traps
Zs. Sándor, O. M. Guilera, Zs. Regály +1
The ring-like structures in protoplanetary discs that are observed in the cold dust emission by ALMA, might be explained by dust aggregates trapped aerodynamically in pressure maxi…
Planet formation around Intermediate-mass stars I: Different disc evolutionary pathways as a function of stellar mass
María Paula Ronco, Matthias R. Schreiber, Eva Villaver +2
The study of protoplanetary disc evolution and planet formation has mainly concentrated on solar (and low) mass stars since they host the majority of the confirmed exoplanets. Neve…
Quantifying the Impact of the Dust Torque on the Migration of Low-mass Planets
Octavio M. Guilera, Pablo Benitez-Llambay, Marcelo M. Miller Bertolami +1
Disk solids are critical in many planet formation processes, however, their effect on planet migration remains largely unexplored. Here we assess for the first time this important…
The importance of thermal torques on the migration of planets growing by pebble accretion
O. M. Guilera, M. M. Miller Bertolami, F. Masset +3
A key process in planet formation is the exchange of angular momentum between a growing planet and the protoplanetary disc, which makes the planet migrate through the disc. Several…
Long live the disk: lifetimes of protoplanetary disks in hierarchical triple star systems and a possible explanation for HD 98800 B
María Paula Ronco, Octavio M. Guilera, Jorge Cuadra +5
The gas dissipation from a protoplanetary disk is one of the key processes affecting planet formation, and it is widely accepted that it happens on timescales of a few million year…
The Nature of the Radius Valley: Hints from Formation and Evolution Models
Julia Venturini, Octavio M. Guilera, Jonas Haldemann +2
The existence of a Radius Valley in the Kepler size distribution stands as one of the most important observational constraints to understand the origin and composition of exoplanet…
Most super-Earths formed by dry pebble accretion are less massive than 5 Earth masses
Julia Venturini, Octavio M. Guilera, M. Paula Ronco +1
We study the formation of rocky planets by dry pebble accretion from self-consistent dust-growth models. In particular, we aim at computing the maximum core mass of a rocky planet…
How Jupiters save or destroy inner Neptunes around evolved stars
María Paula Ronco, Matthias R. Schreiber, Cristian A. Giuppone +3
In about 6 Giga years our Sun will evolve into a red giant and finally end its life as a white dwarf. This stellar metamorphosis will occur to virtually all known host stars of exo…
Setting the Stage: Planet formation and Volatile Delivery
Julia Venturini, M. Paula Ronco, Octavio M. Guilera
The diversity in mass and composition of planetary atmospheres stems from the different building blocks present in protoplanetary discs and from the different physical and chemical…
Giant planet formation at the pressure maxima of protoplanetary disks II. A hybrid accretion scenario
O. M. Guilera, Zs. Sándor, M. P. Ronco +2
Recent observations of protoplanetary disks have revealed ring-like structures that can be associated to pressure maxima. Pressure maxima are known to be dust collectors and planet…
Thermal torque effects on the migration of growing low-mass planets
O. M. Guilera, N. Cuello, M. Montesinos +4
As planets grow the exchange of angular momentum with the gaseous component of the protoplanetary disc produces a net torque resulting in a variation of the semi-major axis of the…
Planetesimal fragmentation and giant planet formation II: dependencies with planetesimal relative velocities and compositions
I. L. San Sebastián, O. M. Guilera, M. G. Parisi
Most of planet formation models that incorporate planetesimal fragmentation consider a catastrophic impact energy threshold for basalts at a constant velocity of 3 km/s during all…
Planetary formation and water delivery in the habitable zone around solar-type stars in different dynamical environments
Patricio Salvador Zain, Gonzalo Carlos de Elía, María Paula Ronco +1
Aims. We study the formation and water delivery of planets in the habitable zone (HZ) around solar-type stars. In particular, we study different dynamical environments that are def…
Migrating Jupiter up to the habitable zone: Earth-like planet formation and water delivery
L. A. Darriba, G. C. de Elía, O. M. Guilera +1
Several observational works have shown the existence of Jupiter-mass planets covering a wide range of semi-major axes around Sun-like stars. We aim to analyse the planetary formati…
The formation of giant planets in wide orbits by photoevaporation-synchronised migration
O. M. Guilera, M. M. Miller Bertolami, M. P. Ronco
The discovery of giant planets in wide orbits represents a major challenge for planet formation theory. In the standard core accretion paradigm planets are expected to form at radi…
Formation of solar system analogs I: looking for initial conditions through a population synthesis analysis
M. P. Ronco, O. M. Guilera, G. C. de Elía
Population synthesis models of planetary systems developed during the last 15 years could reproduce several of the observables of the exoplanet population, and also allowed t…