Results 31 to 40 of about 22,412 (124)

Achondrites in meteor data: Spectra, dynamics, and physical properties of candidate aubrite and eucrite impactors

Astronomy & Astrophysics
Meteor spectroscopy presents new opportunities for investigating the diversity of small Solar System bodies and capturing the real distribution of present material types. In this work, we analyzed a sample of 180 higher-resolution meteor spectra from the
Matlovič P., Pisarčíková A., Pazderová V., Vörös T., Hlobik F., Devillepoix H. A. R., Borovička J., Paprskárová M., Deam S. E., Tóth J., Kornoš L., Paulech T., Zigo P.   +12 more
doaj   +1 more source

The 40K‐K dating system: 1. Improving data interpretation using new model calculations

Meteoritics &Planetary Science, Volume 61, Issue 9, Page 2187-2200, September 2026.
Abstract The 40K‐K cosmic‐ray exposure (CRE) dating system offers a promising method for determining exposure ages of iron meteorites by combining the radioactive cosmogenic 40K with the stable cosmogenic isotopes 39K and 41K. However, earlier applications relied on semi‐empirical production models and inconsistent analytical data sets, limiting their ...
Farshid Nozarian, Suzette Timmerman, Ingo Leya   +2 more
wiley   +1 more source

Space weathering on carbonaceous asteroids: Products and spectral effects revealed by pulsed laser irradiation of Murchison and phyllosilicates

Astronomy & Astrophysics
Context. Carbonaceous asteroids are crucial for understanding the early material composition and evolutionary processes of the solar system, as they preserve pristine organic matter and hydrated minerals. While space weathering significantly alters their
Tai Kairui, Zhao Yu-Yan Sara, Li Yang, Guo Zhuang, Zhang Jiang, Li Chen, Pang Ronghua, Xu Jingyan, Hybler Jiří, Li Xiongyao, Liu Jianzhong, Liu Yun   +11 more
doaj   +1 more source

Bolide light curve systematics from 75 recovered meteorites

Meteoritics &Planetary Science, Volume 61, Issue 9, Page 2351-2392, September 2026.
Abstract How does the energy deposition profile (light curve), deceleration, and penetration depth in Earth's atmosphere depend on asteroid composition and meteorite type? Here, we present the light curve and velocity profile of 75 bolides from camera‐documented meteorite falls.
Peter Jenniskens, Stuart Pilorz, Darrel Robertson, Eric C. Stern   +3 more
wiley   +1 more source

Evaporation of high speed sporadic meteors [PDF]

, 2003
Recent measurements conducted at the Arecibo Observatory report high-speed sporadic meteors having velocities near 50 km/s. The results seem to indicate a bimodal velocity distribution in the sporadic meteors (maxima at ~20 km/s and ~50 km/s).
Roth, C., E. Murad, Murad, E., C. Roth
core   +2 more sources

Comparing the data-reduction pipelines of FRIPON, DFN, WMPL, and AMOS: Case study of the Geminids

Astronomy & Astrophysics
Context. The number of meteor observation networks has expanded rapidly due to declining hardware costs, enabling professional and amateur groups to contribute substantial datasets.
Shober P. M., Vaubaillon J., Anghel S., Devillepoix H. A. R., Hlobik F., Matlovič P., Tóth J., Vida D., Sansom E. K., Jansen-Sturgeon T., Colas F., Malgoyre A., Kornoš L., Ďuriš F., Pazderová V., Bouley S., Zanda B., Vernazza P.   +17 more
doaj   +1 more source

The first discovery of a shocked, metasomatised CV3 chondrule‐fragment in a (Al,Cu)‐bearing micrometeorite

Meteoritics &Planetary Science, Volume 61, Issue 9, Page 2269-2283, September 2026.
Abstract We report the discovery of the second (Al,Cu)‐alloy–bearing micrometeorite, FB‐A2, recovered from Mount Gariglione (southern Italy), representing the sixth such occurrence worldwide. Although chondritic in nature, FB‐A2 differs markedly from previously described microspherules.
Giovanna Agrosì, Paola Manzari, Daniela Mele, Johan Villeneuve, Tiziano Catelani, Mattew J. Genge, Luca Bindi   +6 more
wiley   +1 more source

H+ irradiation of ordinary chondrites supporting observations of Torifune by Hayabusa2#

Astronomy & Astrophysics
Context. The Hayabusa2# mission has performed a flyby of the S-type asteroid Torifune, and thanks to the NIRS3 instrument, it has collected infrared spectra in the 3 μm region for the first time on such a small dry body. Aims.
Lantz C., Malbranque L., Brunetto R., Kitazato K., Benoit-Lamaitrie P., Djouadi Z., Aléon-Toppani A., Kinsumuna O., Kanemaru R., Abe M., Iwata T., Bourçois J.   +11 more
doaj   +1 more source

Meteor phenomena and bodies

, 1998
Meteoroids can be observed at collision with the Earth's atmosphere as meteors. Different methods of observing meteors are presented: besides the traditional counts of individual events, exact methods yield also data on the geometry of the atmospheric ...
Ceplecha, Z., Porubcan, V., Hawkes, R., Simek, M., Elford, W., Borovicka, J., Revelle, D.   +6 more
core   +1 more source

Solar System material reaching neighboring star systems

Astronomy & Astrophysics
Context. In our Solar System, few macroscopic objects have been observed to be moving in hyperbolic orbits and, thus, they must have originated from interstellar space. Some meteoroids are also suspected to have an interstellar origin.
Neslušan L., Janák F., Nagy R., Hajduková M.   +3 more
doaj   +1 more source