5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Consejo Nacional de Investigaciones Científicas y TécnicasAR377 papers
- Universidad Nacional de CórdobaAR357 papers
- Argentine National ObservatoryAR335 papers
- Pontificia Universidad Católica de ChileCL74 papers
- Centre National de la Recherche ScientifiqueFR46 papers
- Trieste Astronomical ObservatoryIT46 papers
- Universidad Nacional de La PlataAR42 papers
- Universidad Autónoma de MadridES40 papers
- Universidade de São PauloBR40 papers
- University of La SerenaCL39 papers
- Durham UniversityGB37 papers
- Universidad Andrés BelloCL34 papers
52 papers · 1 filter
The effects of stellar activity cycles on planetary atmospheric escape and the HeI 1083nm transit signature
Andrew P. Allan, Aline A. Vidotto, Jorge Sanz-Forcada +1
The HeI 1083nm transit signature is commonly used in tracing escaping planetary atmospheres. However, it can be affected by stellar activity, complicating detections and interpreta…
A formation mechanism for narrow rings around minor bodies
C. Beaugé, E. Gianuzzi, N. Trógolo +3
The recent discovery of narrow rings around minor bodies has raised many questions regarding their origin and current dynamics. Sharp ring boundaries seem indicative of shepherding…
Resonant chains in triple-planetary systems
Xuefeng Wang, Li-Yong Zhou, Cristian Beauge
A resonant chain may be formed in a multi-planetary system when ratios of the orbital periods can be expressed as ratios of small integers $T_1:T_2: \cdots :T_N=k_1: k_2: \cdots: k…
Evolution of helium triplet transits of close-in gas giants orbiting K-dwarfs
Andrew P. Allan, Aline A. Vidotto, Carolina Villarreal D'Angelo +2
Atmospheric escape in exoplanets has traditionally been observed using hydrogen Lyman- and H- transmission spectroscopy, but more recent detections have utilised the metastab…
A Six-Planet Resonance Chain in K2-138?
M. Cerioni, C. Beaugé
The K2-138 system hosts six planets and presents an interesting case study due to its distinctive dynamical structure. Its five inner planets are near a chain of 3/2 two-body mean-…
Tidal Evolution of Close-in Exoplanets and Host Stars
S. Ferraz-Mello, C. Beaugé
The evolution of exoplanetary systems with a close-in planet is ruled by the tides mutually raised on the two bodies and by the magnetic braking of the host star. This paper deals…
Circumbinary planets: migration, trapping in mean-motion resonances, and ejection
Emmanuel Gianuzzi, Cristian A. Giuppone, Nicolás Cuello
Most of the planetary systems discovered around binary stars are located at approximately three semi-major axes from the barycentre of their system, curiously close to low-order me…
Absolute colors and phase coefficients of asteroids
A. Alvarez-Candal, S. Jiménez Corral, M. Colazo
Context: We use phase curves of small bodies to measure absolute magnitudes and, together with complementary theoretical and laboratory results, to understand their surfaces' micro…
Is the orbital distribution of multiplanet systems influenced by pure three-planet resonances?
Matías Cerioni, Cristian Beaugé, Tabaré Gallardo
We analyze the distribution of known multi-planet systems () in the plane of mean-motion ratios, and compare it with the resonance web generated by two-planet mean-motion…
Zero-phase angle asteroid taxonomy classification using unsupervised machine learning algorithms
M. Colazo, A. Alvarez-Candal, R. Duffard
We are in an era of large catalogs and, thus, statistical analysis tools for large data sets, such as machine learning, play a fundamental role. One example of such a survey is the…
Atmospheric mass loss and stellar wind effects in young and old systems II: Is TOI-942 the past of TOI-421 system?
Daria Kubyshkina, Aline A. Vidotto, Carolina Villarreal D'Angelo +3
The two planetary systems TOI-942 and TOI-421 share many similar characteristics, apart from their ages (50~Myr and 9~Gyr). Each of the stars hosts two sub-Neptune-like planets at…
Atmospheric mass loss and stellar wind effects in young and old systems I: comparative 3D study of TOI-942 and TOI-421 systems
Daria Kubyshkina, Aline A. Vidotto, Carolina Villarreal D'Angelo +3
At young ages, when radiation from the host star is high, and the planet is hot and inflated after formation, planetary atmospheric mass loss can be extremely strong compared to ol…
The impact of coronal mass ejections and flares on the atmosphere of the hot Jupiter HD189733b
Gopal Hazra, Aline A. Vidotto, Stephen Carolan +2
High-energy stellar irradiation can photoevaporate planetary atmospheres, which can be observed in spectroscopic transits of hydrogen lines. For the exoplanet HD189733b, multiple o…
The Effects of Magnetic Fields on Observational Signatures of Atmospheric Escape in Exoplanets: Double Tail Structures
S. Carolan, A. A. Vidotto, G. Hazra +2
Using 3D radiative MHD simulations and Lyman- transit calculations, we investigate the effect of magnetic fields on the observational signatures of atmospheric escape in exoplan…
The young HD 73583 (TOI-560) planetary system: Two 10-M mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf
O. Barragán, D. J. Armstrong, D. Gandolfi +103
We present the discovery and characterisation of two transiting planets observed by \textit{TESS} in the light curves of the young and bright (V=9.67) star HD73583 (TOI-560). We pe…
Creep Tide Model for the 3-Body Problem. The rotational evolution of a circumbinary planet
F. A. Zoppetti, H. Folonier, A. M. Leiva +1
We present a tidal model for treating the rotational evolution in the general three-body problem with arbitrary viscosities, in which all the masses are considered to be extended a…
The determination of asteroid H and G phase function parameters using GAIA DR2
Milagros Colazo, Rene Duffard, Walter Weidmann
The Gaia mission will provide the scientific community with high-quality observations of asteroids of all categories. The second release of Gaia data (DR2) was published in 2018 an…
Size and Shape Constraints of (486958) Arrokoth from Stellar Occultations
Marc W. Buie, Simon B. Porter, Peter Tamblyn +130
We present the results from four stellar occultations by (486958) Arrokoth, the flyby target of the New Horizons extended mission. Three of the four efforts led to positive detecti…
Tidal evolution of circumbinary systems with arbitrary eccentricities: applications for Kepler systems
F. A. Zoppetti, A. M. Leiva, C. Beaugé
We present an extended version of the Constant Time Lag analytical approach for the tidal evolution of circumbinary planets introduced in our previous work. The model is self-consi…
Star-planet interaction through spectral lines
C. Villarreal D'Angelo, A. A. Vidotto, A. Esquivel +3
The growth of spectroscopic observations of exoplanetary systems allows the possibility of testing theoretical models and studying the interaction that exoplanetary atmospheres hav…
Homogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4
R. V. Baluev, E. N. Sokov, H. R. A. Jones +34
We homogeneously analyse photometric measurements for transit lightcurves belonging to exoplanet hosts. The photometric data cover years…
Hydrodynamical interaction of stellar and planetary winds: effects of charge exchange and radiation pressure on the observed Ly absorption
A. Esquivel, M. Schneiter, C. Villarreal D'Angelo +2
Lyman observations of the transiting exoplanet HD 209458b enable the study of exoplanets exospheres exposed to stellar EUV fluxes, as well as the interacting stellar wind prope…
A self-consistent weak friction model for the tidal evolution of circumbinary planets
F. A. Zoppetti, C. Beaugé, A. M. Leiva +1
We present a self-consistent model for the tidal evolution of circumbinary planets. Based on the weak-friction model, we derive expressions of the resulting forces and torques cons…
Ploonets: formation, evolution and detectability of tidally detached exomoons
Mario Sucerquia, Jaime A. Alvarado-Montes, Jorge I. Zuluaga +2
Close-in giant planets represent the most significant evidence of planetary migration. If large exomoons form around migrating giant planets which are more stable (e.g. those in th…