49 citations · 95 across the 20 of their papers we have counts for
21 papers
JWST Reveals the Kuiper Belt-like Compositions of the Uranian Rings and Small Moons
Matthew Belyakov, M. Ryleigh Davis, Zachariah Milby +2
We present the JWST NIRSpec 1--5 micron spectra of the Uranian rings and four ringmoons: Puck, Perdita, Portia, and Juliet. We find that the compositions of the rings and moons str…
Multiband Color Monitoring of 3I/ATLAS through Ground-Based Relay Observations
Ariel Graykowski, Bryce Bolin, Laura-May Abron +140
We present multiband, long-baseline photometric observations of interstellar comet 3I throughout its 2025--2026 apparition using coordinated ground-based global relay observations.…
Gemini and Apache Point Multi-band Optical Imaging Characterization of Fragmenting Long-period Comet C/2025 K1 (ATLAS)
Carl Ingebretsen, Bryce T. Bolin, Meredith A. MacGregor +8
We present results from multi-band g, r, and i, observations of C/2025 K1 (ATLAS) taken with the Gemini North 8.1-m/GMOS imager on 2025 December 6 and December 24, and u, g, r, i,…
Neptune's Inner Moons and Rings Are Exposed Icy Body Interiors
M. Ryleigh Davis, Matthew Belyakov, Ian Wong +2
Neptune's single large moon, Triton, is accompanied by a set of dusty rings and small moons whose composition and origin are uncertain. Using the James Webb Space Telescope, we obs…
Deuterated water and the formation of the satellites of Uranus
Michael E. Brown, Matthew Belyakov, Swaroop Chandra +5
The satellites of Uranus orbit in a low-eccentricity, equatorial plane that is tilted by 98 degrees relative to the solar system -- a geometry that mirrors Uranus's extreme axial t…
JWST/MIRI Finds ISM-like Amorphous Silicates in Interstellar Comet 3I/ATLAS
Matthew Belyakov, Ian Wong, Carey M. Lisse +7
We present the first spectroscopic mineralogical analysis of the dust coma of an interstellar object (ISO) from JWST mid-infrared spectroscopy of 3I/ATLAS (3I). 3I exhibits a stron…
Nereid as a Regular Satellite of Neptune
Matthew Belyakov, M. Ryleigh Davis, Ian Wong +2
Nereid, Neptune's third largest moon, is considered to be a captured irregular satellite due to its highly eccentric orbit. However, among irregular satellites, Nereid is an outlie…
The Volatile Inventory of 3I/ATLAS as seen with JWST/MIRI
Matthew Belyakov, Ian Wong, Bryce T. Bolin +4
We present the first spectroscopic characterization of an interstellar object at mid-infrared wavelengths. Post-perihelion observations of 3I/ATLAS using the JWST/MIRI medium-resol…
The Perturbation Theory Approach to Stability in the Scattered Disk
Matthew Belyakov, Konstantin Batygin
Scattered disk objects (SDOs) are distant minor bodies that orbit the sun on highly eccentric orbits, frequently with perhelia near Neptune's orbit. Gravitational perturbations due…
Very Large Telescope Observations of Interstellar Comet 3I/ATLAS. II. From Quiescence to Glow: Dramatic Rise of Ni i Emission and Incipient CN Outgassing at Large Heliocentric Distances*
Rohan Rahatgaonkar, Juan Pablo Carvajal, Thomas H. Puzia +25
We report VLT spectroscopy of the interstellar comet 3I/ATLAS (C/2025~N1) from to ~au using X-shooter (300--550\,nm, ) and UVES (opt…
Interstellar comet 3I/ATLAS: discovery and physical description
Bryce T. Bolin, Matthew Belyakov, Christoffer Fremling +18
We describe the physical characteristics of interstellar comet 3I/ATLAS, discovered on 2025 July 1 by the Asteroid Terrestrial-impact Last Alert System. The comet has eccentricity,…
Palomar and Apache Point Spectrophotometry of Interstellar Comet 3I/ATLAS
Matthew Belyakov, Christoffer Fremling, Matthew J. Graham +7
On July 1st 2025 the third interstellar object, 3I/ATLAS or C/2025 N1 (ATLAS), was discovered, with an eccentricity of and perihelion of au. We…
Multi-epoch spectro-photometric characterization of the minimoon 2024 PT in the visible and near-infrared
Jin Beniyama, Bryce T. Bolin, Alexey V. Sergeyev +5
2024 PT is a tiny ( m) near-Earth asteroid (NEA) discovered in August 2024. 2024 PT was gravitationally bound to the Earth-Moon system from September to November 2…
JWST Near Infrared Spectroscopy of High Albedo Jupiter Trojans: A New Surface Type in the Trojan Belt
Michael E. Brown, Ian Wong, Matthew Belyakov
We present 0.8 to 5 m JWST spectra of four 20 km diameter Jupiter Trojans known to have albedos elevated above the values typical in the remaining Trojan population. The s…
A JWST study of CO on the satellites of Saturn
Michael E. Brown, Samantha K. Trumbo, Matthew Belyakov +2
Solid state CO has been detected throughout the outer solar system, even at temperatures where crystalline CO is unstable, requiring that the CO be trapped in a separat…
Saturnian Irregular Satellites as a Probe of Kuiper Belt Surface Evolution
Matthew Belyakov, Michael E. Brown
We present the JWST NIRSpec PRISM 0.7-5.3 micron spectra of Albiorix and Siarnaq and the NIRSpec G235H/G395M 1.7-5.3 micron spectra of Phoebe, the three largest Saturnian irregular…
Keck and Gemini characterization of rendezvous target 1998 KY
Bryce T. Bolin, Christoffer Fremling, Matthew Belyakov +7
Near-earth object (NEO) 1998 KY is a target of the spacecraft, which it will rendezvous with in July 2031. The asteroid is a rapid rotator and has a large out-…
The Trojan-like Colors of Low-Perihelion Kuiper Belt Objects
Matthew Belyakov, Michael E. Brown, Alya al-Kibbi
An important testable prediction of dynamical instability models for the early evolution of the Solar System is that Jupiter Trojans share a source population with the Kuiper belt.…
JWST Spectrophotometry of the Small Satellites of Uranus and Neptune
Matthew Belyakov, M. Ryleigh Davis, Zachariah Milby +2
We use 1.4-4.6 micron multi-band photometry of the small inner Uranian and Neptunian satellites obtained with the James Webb Space Telescope's near-infrared imager NIRCam to charac…
Limits on the Detection of Planet Nine in the Dark Energy Survey
Matthew Belyakov, Pedro H. Bernardinelli, Michael E. Brown
Studies of the clustering of the most distant Kuiper belt objects in the outer solar system have hinted at the possible existence of a planet beyond Neptune referred to as Planet N…
Connecting galaxy evolution in clusters with their radial profiles and phase space distribution: results from the IllustrisTNG hydrodynamical simulations
Tara Dacunha, Matthew Belyakov, Susmita Adhikari +3
We study the population of galaxies around galaxy clusters in the hydrodynamic simulation suite IllustrisTNG 300-1 to study the signatures of their evolutionary history on observab…