3 citations · 11 across the 18 of their papers we have counts for
19 papers · 1 filter
The Dynamics of Planetary Ejection
Malena Rice, William DeRocco, Sean N. Raymond
The ubiquity of free-floating planets inferred from microlensing and direct imaging surveys suggests that planetary ejection---a process in which planets initially born encircling…
On the Eccentricity Distribution and Tidal Evolution of Transiting Brown Dwarfs
Thiago Ferreira, Malena Rice
Brown dwarfs on short-period orbits populate an intermediate regime between hot Jupiters and tight stellar binaries, lying at the intersection of possible evolutionary avenues. The…
The Architecture of the 14 Herculis System Suggests Primordial Ejection of a Massive Planet
Tiger Lu, Sarah C. Millholland, Malena Rice +6
The 14 Herculis system hosts two super-Jupiters on eccentric, significantly misaligned orbits. This orbital architecture represents a dynamical puzzle that demands explanation. In…
Chemistry and Isotope Ratios of Substellar Atmospheres in the Pictoris Young Moving Group and Vicinity
Yurou Liu, Yapeng Zhang, Jerry W. Xuan +7
Measuring the chemical and isotopic compositions of gas giants and brown dwarfs provides insights into their formation pathways and birth environments. 2MASS J0249-0557 c is an L2-…
Hot Jupiters' Isolation Is Not Unique to High-Eccentricity Tidal Migration
Brandon Radzom, Songhu Wang, Bonan Pu +2
Conventionally, the observed isolation of hot Jupiters, marked by a paucity of nearby low-mass planetary companions, has been interpreted as evidence of high-eccentricity tidal mig…
Confirmation of Fe I on MASCARA-5 b's Dayside Observed With EXPRES
James T. Sikora, Joe Llama, Rachael M. Roettenbacher +5
MASCARA-5~b/TOI-1431~b is an ultra-hot Jupiter \citep[, , , $R_{\rm p}=…
Observational and Dynamical Constraints on an Unseen Outer Perturber in the GJ 436 Hot Neptune System
Haedam Im, Tiger Lu, Malena Rice +3
Hot Neptunes in the sub-Jovian desert offer unique insights into planetary system evolution, retaining signatures of dynamical processes that shaped their present-day architectures…
Constraining the Occurrence of ZLK-Induced White Dwarf Pollution with Dissipative Precession
Isabella Trierweiler, Konstantin Gerbig, Malena Rice
Von Zeipel-Lidov-Kozai (ZLK) oscillations, induced by bound, perturbative companions to white dwarfs, have been suggested as a dynamical mechanism that may contribute to white dwar…
The Astrometric Resoeccentric Degeneracy: Eccentric Single Planets Mimic 2:1 Resonant Planet Pairs in Astrometry
Daniel A. Yahalomi, Tiger Lu, Philip J. Armitage +4
Detections of long-period giant exoplanets will expand dramatically with Gaia Data Release 4 (DR4), but interpreting these signals will require care. We derive the astrometric reso…
A High-Precision, Differentiable Code for Solar System Ephemerides
Ben Cassese, Malena Rice, Tiger Lu
We present jorbit, a python/JAX library designed to enable modern data-driven numerical studies of the solar system. Written entirely in JAX, an auto-differentiable and optionally…
Do White Dwarfs Sample Water-Rich Planetary Material?
Isabella L. Trierweiler, Carl Melis, Érika Le Bourdais +9
Polluted white dwarfs offer a unique way to directly probe the compositions of exoplanetary bodies. We examine the water content of accreted material using the oxygen abundances of…
The Formation of Double Hot Jupiter Systems through von Zeipel-Lidov-Kozai Migration
Yurou Liu, Tiger Lu, Malena Rice
The von Zeipel-Lidov-Kozai (ZLK) mechanism with tidal friction has been demonstrated as a promising avenue to generate hot Jupiters in stellar binary systems. Previous population s…
JWST Coronagraphic Images of 14 Her c: a Cold Giant Planet in a Dynamically Hot, Multi-planet System
Daniella C. Bardalez Gagliuffi, William O. Balmer, Laurent Pueyo +16
Most observed multi-planet systems are coplanar, in a dynamically "cold" configuration of concentric orbits like our own Solar System. With the James Webb Space Telescope (JWST) we…
Peekaboo: Secular Resonances from Evolving Stellar Oblateness Impede Transit Detection
Thea Faridani, Smadar Naoz, Gongjie Li +2
Secular resonances in exoplanet systems occur when two or more planets have commensurabilities in the precession rates of their orbital elements, causing an exchange of angular mom…
Collisional Fragmentation Support in TRACE
Tiger Lu, Haniyeh Tajer, David M. Hernandez +3
We present improved collision support for TRACE, a state-of-the-art hybrid integrator in REBOUND. TRACE now supports collisional fragmentation and can handle both removing and addi…
The Case for Edge-On Binaries: An Avenue Toward Comparative Exoplanet Demographics
Joseph E. Hand, Malena Rice, Konstantin Gerbig
Most Sun-like and higher-mass stars reside in systems that include one or more gravitationally bound stellar companions. These systems offer an important probe of planet formation…
Aligning Planet-Hosting Binaries via Dissipative Precession in Circumstellar Disks
Konstantin Gerbig, Malena Rice, J. J. Zanazzi +2
Recent observations have demonstrated that some subset of even moderately wide-separation planet-hosting binaries are preferentially configured such that planetary and binary orbit…
More Likely Than You Think: Inclination-Driving Secular Resonances are Common in Known Exoplanet Systems
Thea Faridani, Smadar Naoz, Gongjie Li +2
Multi-planet systems face significant challenges to detection. For example, further orbiting planets have reduced signal-to-noise ratio in radial velocity detection methods, and sm…
Planet-Planet Scattering and ZLK Migration -- The Dynamical History of HAT-P-11
Tiger Lu, Qier An, Gongjie Li +4
The two planets of the HAT-P-11 system represent fascinating dynamical puzzles due to their significant eccentricities and orbital misalignments. In particular, HAT-P-11 b is on a…