112 citations · 546 across the 18 of their papers we have counts for
19 papers
Experimental evidence for physical alteration of fine regolith on near-Sun asteroids
Jooyeon Geem, Mikael Granvik, Georgios Tsirvoulis +5
The surfaces of airless bodies evolve through processes such as (micro)meteoroid impacts and thermal fatigue, which modify physical properties such as grain size, porosity, and min…
Multi-Wavelength Post-Perihelion Polarimetry of Interstellar Comet 3I/ATLAS
Zuri Gray, Galin Borisov, Ludmilla Kolokolova +15
We present new post-perihelion polarimetric observations of the third discovered interstellar object, 3I/ATLAS (C/2025 N1; hereafter 3I), obtained using FORS2 at the Very Large Tel…
The Inbound Gas and Dust Evolution of Interstellar Comet 3I/ATLAS from Optical Spectroscopy and Multi-band Photometry
Toni Santana-Ros, Alexey Sergeyev, Oleksandra Ivanova +9
Interstellar objects (ISOs) provide direct constraints on the composition and evolution of extrasolar planetary systems. As the third confirmed ISO, comet 3I/ATLAS offers a rare op…
A method of photometric data extraction for asteroids from time-domain surveys
Xiaoyun Xu, Xiaobing Wang, Karri Muinonen +9
The lightcurves of asteroids are essential for determining their physical characteristics, including shape, spin, size, and surface composition. However, most asteroids are missing…
Polarimetry of Didymos-Dimorphos: Unexpected Long-Term Effects of the DART Impact
Zuri Gray, Stefano Bagnulo, Mikael Granvik +9
We have monitored the Didymos-Dimorphos binary system in imaging polarimetric mode before and after the impact from the Double Asteroid Redirection Test (DART) mission. A previous…
Taxonomic analysis of asteroids with artificial neural networks
Nanping Luo, Xiaobin Wang, Shenghong Gu +3
We study the surface composition of asteroids with visible and/or infrared spectroscopy. For example, asteroid taxonomy is based on the spectral features or multiple color indices…
Gaia Focused Product Release: Asteroid orbital solution. Properties and assessment
Gaia Collaboration, P. David, F. Mignard +2
Context. We report the exploitation of a sample of epoch astrometry for 157 000 asteroids, the same object in the Gaia Data Release 3, extended over the time coverage planned for t…
Extension of Radiative Transfer Coherent Backscattering RT-CB code to dense discrete random media
Johannes Markkanen, Antti Penttilä
The Radiative transfer coherent backscattering (RT-CB) code is extended to apply to dense discrete random media of optically soft spherical particles. This is achieved by utilizing…
(433) Eros and (25143) Itokawa surface properties from reflectance spectra
David Korda, Tomáš Kohout, Kateřina Flanderová +2
Context. Upcoming space missions will provide us with surface-resolved NEA reflectance spectra. Neural networks are useful tools for analysing reflectance spectra and determining m…
Optical spectropolarimetry of binary asteroid Didymos-Dimorphos before and after the DART impact
S. Bagnulo, Z. Gray, M. Granvik +7
We have monitored the Didymos-Dimorphos binary asteroid in spectropolarimetric mode in the optical range before and after the DART impact. The ultimate goal was to obtain constrain…
Sub-surface alteration and related change in reflectance spectra of space-weathered materials
K. Chrbolková, P. Halodová, T. Kohout +7
One of the main complications for the interpretation of reflectance spectra of airless planetary bodies is surface alteration by space weathering caused by irradiation by solar win…
Gaia Data Release 3: Reflectance spectra of Solar System small bodies
Gaia Collaboration, L. Galluccio, M. Delbo +444
The Gaia mission of the European Space Agency (ESA) has been routinely observing Solar System objects (SSOs) since the beginning of its operations in August 2014. The Gaia data rel…
Comparison of space weathering spectral changes induced by solar wind and micrometeoroid impacts using ion- and femtosecond-laser-irradiated olivine and pyroxene
K. Chrbolková, R. Brunetto, J. Ďurech +8
Space weathering is a process that changes the surface of airless planetary bodies. Prime space weathering agents are solar wind irradiation and micrometeoroid bombardment. These p…
Gaia Early Data Release 3: Acceleration of the solar system from Gaia astrometry
Gaia Collaboration, S. A. Klioner, F. Mignard +414
Context. Gaia Early Data Release 3 (Gaia EDR3) provides accurate astrometry for about 1.6 million compact (QSO-like) extragalactic sources, 1.2 million of which have the best-quali…
Experimental constraints on the ordinary chondrite shock darkening caused by asteroid collisions
T. Kohout, E. V. Petrova, G. A. Yakovlev +10
Shock-induced changes in ordinary chondrite meteorites related to impacts or planetary collisions are known to be capable of altering their optical properties. Thus, one can hypoth…
Interpretation of the phase functions measured by the OSIRIS instrument for Comet 67P/Churyumov-Gerasimenko
Johannes Markkanen, Jessica Agarwal, Timo Väisänen +2
We show that the scattering phase functions of the coma and the nucleus of the comet 67P/Churyumov-Gerasimenko measured by the Rosetta/OSIRIS instrument can be reproduced by a part…
Mineralogy, reflectance spectra, and physical properties of the Chelyabinsk LL5 chondrite, insight into shock induced changes in asteroid regoliths
Tomas Kohout, Maria Gritsevich, Victor I. Grokhovsky +6
The mineralogy and physical properties of Chelyabinsk meteorites (fall, February 15, 2013) are presented. Three types of meteorite material are present, described as the light-colo…
Asteroid spin-axis longitudes from the Lowell Observatory database
E. Bowell, D. A. Oszkiewicz, L. H. Wasserman +3
By analyzing brightness variation with ecliptic longitude and using the Lowell Observatory photometric database, we estimate spin-axis longitudes for more than 350 000 asteroids. H…
Asteroid taxonomic signatures from photometric phase curves
D. A. Oszkiewicz, E. Bowell, L. H. Wasserman +5
We explore the correlation between an asteroid's taxonomy and photometric phase curve using the H, G12 photometric phase function, with the shape of the phase function described by…