392 citations · 1.1k across the 39 of their papers we have counts for
41 papers
Singles in Disguise: Kepler's Low-SNR Single-Transiting Systems as Incompletely Detected Multis
Daniel A. Yahalomi, David Nesvorny, David Kipping +2
NASA's Kepler mission found more systems with one transiting planet (``singles'') than expected from those with several (``multis''). This excess was first taken as evidence for a…
ExoMOD II. A Statistical Model of Transit Timing Variations in Kepler Multi-Planet Systems
David Nesvorny, Daniel A. Yahalomi, David Kipping +2
In Paper I (Nesvorný et al. 2026), we forward modeled transit observations of the Kepler telescope to characterize the orbital properties of close-in planetary systems. The new pop…
ExoMOD I. A Forward Model for the Orbital Architecture of Kepler Multi-Planet Systems
David Nesvorny, Daniel A. Yahalomi, David Kipping +1
Transit observations only detect planets with favorable, near edge-on orientation of orbits as seen by a distant observer, which leaves much freedom for various interpretations in…
TESS Photometry and Radial Velocity Analysis of the sub-Neptune Exoplanet π Mensae c and the Wider π Mensae Planetary System
Skylar S. Larsen, Jake D. Turner, Nikole K. Lewis +10
Exoplanet characterization relies on precise measurements of planetary orbital and physical parameters. This is particularly important for planetary dynamics and atmospheric evolut…
A Massive Hot-Jupiter Companion that Disfavors Giant Planet Formation Beyond the Water-Ice Line
Eritas Yang, Tiger Lu, Daniel A. Yahalomi +1
We report evidence for a brown-dwarf companion with mass in the KELT-20 system, in which an ultra-hot Jupiter transits an A2-type star. The companion's p…
Quantifying the Contamination of TESS Ecliptic-Plane Light Curves by Minor Planets
Ben Cassese, Justin Vega, Daniel A. Yahalomi +6
Though missions devoted to time series photometry focus primarily on targets far beyond the solar system, their observations can be contaminated by foreground minor planets, especi…
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…
Micrometeoroid Impact Rate Analysis for an Artemis-Era Lunar Base
Daniel A. Yahalomi, Matthew T. Scoggins, Nasiah Anderson +5
NASA's Artemis Mission aims to return astronauts to the Moon and establish a base at the lunar south pole. A key challenge is understanding the threat from micrometeoroid impacts,…
A JWST Transit of a Jupiter Analog: II. A Search for Exomoons
David Kipping, Ben Cassese, Quentin Changeat +3
We present a search for exomoons around the Jupiter-like exoplanet Kepler-167e using a NIRSpec JWST transit. Our 60 hour time series clearly reveals the enormous impact of long-ter…
A JWST Transit of a Jupiter Analog I: Constraints on the Oblateness of Kepler-167e
Ben Cassese, David Kipping, Quentin Changeat +5
In October 2024 JWST observed a transit of Kepler-167e, a Jupiter-analog planet on a 1000+ day orbit. These observations, recorded over a long baseline of nearly 60 hours, were des…
Near-circular orbits for planets around M/K-type stars with Earth-like sizes and instellations
David Kipping, Diana Solano-Oropeza, Daniel A. Yahalomi +3
Recent advances have enabled the discovery of a population of potentially Earth-like planets, yet their orbital eccentricity, which governs their climate and provides clues about t…
Mapping the Orbital Landscape of Perturbing Planet Solutions for Single-Planet Systems with TTVs
Daniel A. Yahalomi, David Kipping
There are now thousands of single-planet systems observed to exhibit transit timing variations (TTVs), yet we largely lack any interpretation of the implied masses responsible for…
The democratic detrender: Ensemble-Based Removal of the Nuisance Signal in Stellar Time-Series Photometry
Daniel A. Yahalomi, David Kipping, Diana Solano-Oropeza +10
Accurate, precise, and computationally efficient removal of unwanted activity that exists as a combination of periodic, quasi-periodic, and non-periodic systematic trends in time-s…
The Exoplanet Edge: Planets Don't Induce Observable TTVs with a Dominant TTV Period Faster than Half their Orbital Period
Daniel A. Yahalomi, David Kipping, Eric Agol +1
Transit timing variations (TTVs) are observed for exoplanets at a range of amplitudes and periods, yielding an ostensibly degenerate forest of possible explanations. We offer some…
A Reply to: Large Exomoons unlikely around Kepler-1625 b and Kepler-1708 b
David Kipping, Alex Teachey, Daniel A. Yahalomi +7
Recently, Heller & Hippke argued that the exomoon candidates Kepler-1625 b-i and Kepler-1708 b-i were allegedly 'refuted'. In this Matters Arising, we address these claims. For Kep…
Not So Fast Kepler-1513: A Perturbing Planetary Interloper in the Exomoon Corridor
Daniel A. Yahalomi, David Kipping, David Nesvorný +9
Transit Timing Variations (TTVs) can be induced by a range of physical phenomena, including planet-planet interactions, planet-moon interactions, and stellar activity. Recent work…
Roman CCS White Paper: Adding Fields Hosting Globular Clusters To The Galactic Bulge Time Domain Survey
Samuel K. Grunblatt, Robert F. Wilson, Andrew Winter +9
Despite multiple previous searches, no transiting planets have yet been identified within a globular cluster. This is believed to be due to a combination of factors: the low metall…
Detecting Solar System Analogs through Joint Radial Velocity/Astrometric Surveys
Daniel A. Yahalomi, Ruth Angus, David N. Spergel +1
Earth-mass exoplanets on year-long orbits and cool gas giants (CGG) on decade-long orbits lie at the edge of current detection limits. The Terra Hunting Experiment (THE) will take…
A search for transit timing variations within the exomoon corridor using Kepler data
David Kipping, Daniel A. Yahalomi
An exomoon will produce transit timing variations (TTVs) upon the parent planet and their undersampled nature causes half of such TTVs to manifest within a frequency range of 2 to…
Validation of 13 Hot and Potentially Terrestrial TESS Planets
Steven Giacalone, Courtney D. Dressing, Christina Hedges +108
The James Webb Space Telescope (JWST) will be able to probe the atmospheres and surface properties of hot, terrestrial planets via emission spectroscopy. We identify 18 potentially…
A Possible Alignment Between the Orbits of Planetary Systems and their Visual Binary Companions
Sam Christian, Andrew Vanderburg, Juliette Becker +111
Astronomers do not have a complete picture of the effects of wide-binary companions (semimajor axes greater than 100 AU) on the formation and evolution of exoplanets. We investigat…
TKS V. Twin sub-Neptunes Transiting the Nearby G Star HD 63935
Nicholas Scarsdale, Joseph M. Akana Murphy, Natalie M. Batalha +56
We present the discovery of two nearly identically-sized sub-Neptune transiting planets orbiting HD 63935, a bright ( mag), sun-like () star at 49 pc. TESS id…
TOI-220 : a warm sub-Neptune discovered by TESS
S. Hoyer, D. Gandolfi, D. J. Armstrong +77
In this paper we report the discovery of TOI-220 , a new sub-Neptune detected by the Transiting Exoplanet Survey Satellite (TESS) and confirmed by radial velocity follow-up obse…
Warm Jupiters in TESS Full-Frame Images: A Catalog and Observed Eccentricity Distribution for Year 1
Jiayin Dong, Chelsea X. Huang, Rebekah I. Dawson +57
Warm Jupiters -- defined here as planets larger than 6 Earth radii with orbital periods of 8--200 days -- are a key missing piece in our understanding of how planetary systems form…