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The Gemini planet-finding campaign: the frequency of giant planets aroud debris disk stars
(American Astronomical SocietyChicago, 2013)
We have completed a high-contrast direct imaging survey for giant planets around 57 debris disk stars as part of the Gemini NICI Planet-Finding Campaign. We achieved median H-band contrasts of 12.4 mag at 0.''5 and 14.1 ...
Estudio de variabilidad fotométrica en estrellas de tipo T Tauri
(2019-03)
Las estrellas jóvenes de tipo T Tauri tienen la edad adecuada para el inicio del proceso de formación planetaria de acuerdo a los modelos más aceptados en la actualidad. Sin embargo éstas presentan algunos desafíos para ...
The origins of nearly coplanar, non-resonant systems of close-in super-Earths
(2020-09-01)
Some systems of close-in 'super-Earths' contain five or more planets on non-resonant but compact and nearly coplanar orbits. The Kepler-11 system is an iconic representative of this class of system. It is challenging to ...
Transition disks: four candidates for ongoing giant planet formation in Ophiuchus
(EDP Sciences, 2012-03)
Among the large set of Spitzer-selected transitional disks that we have examined in the Ophiuchus molecular, four disks have been identified as (giant) planet-forming candidates based on the morphology of their spectral ...
Transition disks: four candidates for ongoing giant planet formation in Ophiuchus
(EDP Sciences, 2011)
Growth and evolution of satellites in a Jovian massive disc
(2018-03-21)
The formation of satellite systems in circum-planetary discs is considered to be similar to the formation of rocky planets in a proto-planetary disc, especially super-Earths. Thus, it is possible to use systems with large ...
Estabilidade e formação de planetas terrestres em regiões coorbitais
(Universidade Estadual Paulista (Unesp), 2019-02-26)
Encontrar um planeta como a Terra fora do Sistema Solar parece ser dificil. Quando olhamos para os dados dos quase 4000 exoplanetas descobertos até o momento vemos que nenhum deles é similar à Terra. Uma alternativa para ...
Migrating Jupiter up to the habitable zone: Earth-like planet formation and water delivery
(EDP Sciences, 2017-08)
Context. Several observational works have shown the existence of Jupiter-mass planets covering a wide range of semi-major axes around Sun-like stars. Aims. We aim to analyse the planetary formation processes around Sun-like ...
The tensile strength of compressed dust samples and the catastrophic disruption threshold of pre-planetary matter
(Oxford University Press, 2020-09)
During the planetary formation process, mutual collisions among planetesimals take place, impacting on their porosities. The outcome of these collisions depends, among other parameters, on the tensile strength of the ...
Four new planets around giant stars and the mass-metallicity correlation of planet-hosting stars
(EDP Sciences, 2016)
Context. Exoplanet searches have revealed interesting correlations between the stellar properties and the occurrence rate of planets. In particular, different independent surveys have demonstrated that giant planets are ...