263 citations · 2.8k across the 46 of their papers we have counts for
34 papers · 1 filter
Orbital alignment of the eccentric warm Jupiter TOI-677 b
Elyar Sedaghati, Andrés Jordán, Rafael Brahm +3
Warm Jupiters lay out an excellent laboratory for testing models of planet formation and migration. Their separation from the host star makes tidal reprocessing of their orbits ine…
The influence of cold Jupiters in the formation of close-in planets. I. planetesimal transport
Marcy Best, Antranik A. Sefilian, Cristobal Petrovich
The formation of a cold Jupiter (CJ) is expected to quench the influx of pebbles and the migration of cores interior to its orbit, thus limiting the efficiency of rocky planet form…
A gap-sharing planet pair shaping the crescent in HD 163296: a disk sculpted by a resonant chain
Juan Garrido-Deutelmoser, Cristobal Petrovich, Carolina Charalambous +2
ALMA observations of the disk around HD 163296 have resolved a crescent-shape substructure at around 55 au, inside and off-center from a gap in the dust that extends from 38 au to…
NEID Reveals that The Young Warm Neptune TOI-2076 b Has a Low Obliquity
Robert C. Frazier, Gudmundur Stefansson, Suvrath Mahadevan +27
TOI-2076 b is a sub-Neptune-sized planet () that transits a young () bright () K-dwarf hosting a system of three transiting…
Substructures in protoplanetary disks imprinted by compact planetary systems
Juan Garrido-Deutelmoser, Cristobal Petrovich, Leonardo Krapp +2
The substructures observed in protoplanetary disks may be the signposts of embedded planets carving gaps or creating vortices. The inferred masses of these planets often fall in th…
Mutual Inclination of Ultra-Short-Period Planets with Time Varying Stellar J2-moment
Chen Chen, Gongjie Li, Cristobal Petrovich
Systems with ultra-short-period planets (USPs) tend to possess larger mutual inclinations compared to those with planets located farther from their host stars. This could be explai…
The chaotic history of the retrograde multi-planet system in K2-290A driven by distant stars
Marcela Best, Cristobal Petrovich
The equator of star K2-290A was recently found to be inclined by 124+/-6 degrees relative to the orbits of both its known transiting planets. The presence of a companion star B at…
The Warm Neptune GJ 3470b has a Polar Orbit
Gudmundur Stefansson, Suvrath Mahadevan, Cristobal Petrovich +34
The warm Neptune GJ 3470b transits a nearby (pc) bright slowly rotating M1.5-dwarf star. Using spectroscopic observations during two transits with the newly commissioned NEID…
Observable Predictions from Perturber-coupled High-eccentricity Tidal Migration of Warm Jupiters
Jonathan M. Jackson, Rebekah I. Dawson, Andrew Shannon +1
The origin of warm Jupiters (gas giant planets with periods between 10 and 200 days) is an open question in exoplanet formation and evolution. We investigate a particular migration…
Kozai Migration Naturally Explains the White Dwarf Planet WD1856b
Diego J. Muñoz, Cristobal Petrovich
The Jovian-sized object WD~1856~b transits a white dwarf (WD) in a compact -day orbit. Unlikely to have endured stellar evolution in its current orbit, WD~1856~b is thought to…
An Ultra-Hot Neptune in the Neptune desert
James S. Jenkins, Matías R. Díaz, Nicolás T. Kurtovic +81
About one out of 200 Sun-like stars has a planet with an orbital period shorter than one day: an ultra-short-period planet (Sanchis-ojeda et al. 2014; Winn et al. 2018). All of the…
Constraining protoplanetary disks with exoplanetary dynamics: Kepler-419 as an example
Mohamad Ali-Dib, Cristobal Petrovich
We investigate the origins of Kepler-419, a peculiar system hosting two nearly coplanar and highly eccentric gas giants with apsidal orientations librating around anti-alignment, a…
A disk-driven resonance as the origin of high inclinations of close-in planets
Cristobal Petrovich, Diego J. Muñoz, Kaitlin M. Kratter +1
The recent characterization of transiting close-in planets has revealed an intriguing population of sub-Neptunes with highly tilted and even polar orbits relative to their host sta…
Nekhoroshev Estimates for the Survival Time of Tightly Packed Planetary Systems
Almog Yalinewich, Cristobal Petrovich
-body simulations of non-resonant tightly-packed planetary systems have found that their survival time (i.e. time to first close encounter) grows exponentially with their interp…
Signatures of a planet-planet impacts phase in exoplanetary systems hosting giant planets
Renata Frelikh, Hyerin Jang, Ruth A. Murray-Clay +1
Exoplanetary systems host giant planets on substantially non-circular, close-in orbits. We propose that these eccentricities arise in a phase of giant impacts, analogous to the fin…
HD 1397b: a transiting warm giant planet orbiting a V = 7.8 mag sub-giant star discovered by TESS
Rafael Brahm, Néstor Espinoza, Andrés Jordán +11
We report the discovery of a transiting planet first identified as a candidate in Sector 1 of the Transiting Exoplanet Survey Satellite (TESS), and then confirmed with precision ra…
Secular transport during disk dispersal: the case of Kepler-419
Cristobal Petrovich, Yanqin Wu, Mohamad Ali-Dib
Due to fortuitous circumstances, the two giant planets around Kepler-419 have well characterized 3-D orbits. They are nearly coplanar to each other; the inner one has a large eccen…
Ultra-short-period planets from secular chaos
Cristobal Petrovich, Emily Deibert, Yanqin Wu
Over a hundred rocky planets orbiting Sun-like stars in very short orbital periods (<1 day) have been discovered by the Kepler mission. These planets, known as ultra-short-period (…
About 30% of Sun-like Stars Have Kepler-like Planetary Systems: A Study of their Intrinsic Architecture
Wei Zhu, Cristobal Petrovich, Yanqin Wu +2
We constrain the intrinsic architecture of Kepler planetary systems by modeling the observed multiplicities of the transiting planets (tranets) and their transit timing variations…
Convergent Migration Renders TRAPPIST-1 Long-lived
Daniel Tamayo, Hanno Rein, Cristobal Petrovich +1
TRAPPIST-1 is a late M-dwarf orbited by seven Earth-sized planets with orbital period ratios near a chain of mean motion resonances. Due to uncertain system parameters, most orbita…
Connecting HL Tau to the Observed Exoplanet Sample
Christopher Simbulan, Daniel Tamayo, Cristobal Petrovich +2
The Atacama Large Millimeter/submilimeter Array (ALMA) recently revealed a set of nearly concentric gaps in the protoplanetary disk surrounding the young star HL Tau. If these are…
A Machine Learns to Predict the Stability of Tightly Packed Planetary Systems
Daniel Tamayo, Ari Silburt, Diana Valencia +9
The requirement that planetary systems be dynamically stable is often used to vet new discoveries or set limits on unconstrained masses or orbital elements. This is typically carri…
Dynamically hot Super-Earths from outer giant planet scattering
Chelsea X. Huang, Cristobal Petrovich, Emily Deibert
The hundreds of multiple planetary systems discovered by the \textit{Kepler} mission are typically observed to reside in close-in ( AU), low-eccentricity, and low-incl…
Planetary engulfment as a trigger for white dwarf pollution
Cristobal Petrovich, Diego J. Muñoz
The presence of a planetary system can shield a planetesimal disk from the secular gravitational perturbations due to distant outer massive objects (planets or stellar companions).…