Results 51 to 60 of about 164,857 (187)

Microscopic slickenside as a record of weak shock metamorphism in the surface layer of asteroid Ryugu

Meteoritics &Planetary Science, Volume 59, Issue 12, Page 3181-3192, December 2024.
Abstract The surface morphology of regolith grains from the C‐type asteroid Ryugu was studied in search of evidence of impact events on the asteroid. Scanning electron microscopy revealed that ~8% of C0105‐042 Ryugu grains have a smooth surface on one side of the grains. One of these grains has striated linear grooves (striations) on its smooth surface.
Masaaki Miyahara, Takaaki Noguchi, Toru Matsumoto, Naotaka Tomioka, Akira Miyake, Yohei Igami, Yusuke Seto, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Hope A. Ishii, John P. Bradley, Kenta K. Ohtaki, Elena Dobrică, Hugues Leroux, Corentin Le Guillou, Damien Jacob, Francisco de la Peña, Sylvain Laforet, Bahae‐Eddine Mouloud, Maya Marinova, Falko Langenhorst, Dennis Harries, Pierre Beck, Thi H. V. Phan, Rolando Rebois, Neyda M. Abreu, Jennifer Gray, Thomas Zega, Pierre‐M. Zanetta, Michelle S. Thompson, Rhonda Stroud, Kate Burgess, Brittany A. Cymes, John C. Bridges, Leon Hicks, Martin R. Lee, Luke Daly, Phil A. Bland, Michael E. Zolensky, David R. Frank, James Martinez, Akira Tsuchiyama, Masahiro Yasutake, Junya Matsuno, Shota Okumura, Itaru Mitsukawa, Kentaro Uesugi, Masayuki Uesugi, Akihisa Takeuchi, Mingqi Sun, Satomi Enju, Aki Takigawa, Tatsuhiro Michikami, Tomoki Nakamura, Megumi Matsumoto, Yusuke Nakauchi, Masanao Abe, Satoru Nakazawa, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Makoto Yoshikawa, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Tomohiro Usui, Toru Yada, Hisayoshi Yurimoto, Kazuhide Nagashima, Noriyuki Kawasaki, Naoya Sakamotoa, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Shogo Tachibana, Sei‐ichiro Watanabe, Yuichi Tsuda   +79 more
wiley   +1 more source

Thermal Models of Asteroids with Two-band Combinations of Wide-field Infrared Survey Explorer Cryogenic Data

The Planetary Science Journal, 2023
We used the reparameterized Near-Earth Asteroid Thermal Model to model observations of a curated set of over 4000 asteroids from the Wide-field Infrared Survey Explorer in two wavelength bands (W2–3 or W3–4) and compared the results to previous results ...
Emily A. Whittaker, Jean-Luc Margot, Adrian L. H. Lam, Nathan Myhrvold   +3 more
doaj   +1 more source

The Empty Primordial Asteroid Belt [PDF]

Science Advances, 3, e1701138 (2017), 2017
The asteroid belt contains less than a thousandth of Earth's mass and is radially segregated, with S-types dominating the inner belt and C-types the outer belt. It is generally assumed that the belt formed with far more mass and was later strongly depleted.
arxiv  

Linking brain–heart interactions to emotional arousal in immersive virtual reality

Psychophysiology, Volume 61, Issue 12, December 2024.
Abstract The subjective experience of emotions is linked to the contextualized perception and appraisal of changes in bodily (e.g., heart) activity. Increased emotional arousal has been related to attenuated high‐frequency heart rate variability (HF‐HRV), lower EEG parieto‐occipital alpha power, and higher heartbeat‐evoked potential (HEP) amplitudes ...
A. Fourcade, F. Klotzsche, S. M. Hofmann, A. Mariola, V. V. Nikulin, A. Villringer, M. Gaebler   +6 more
wiley   +1 more source

Detection of Hydration on Nominally Anhydrous S-complex Main Belt Asteroids

The Planetary Science Journal
We present the results of a survey of nominally anhydrous main belt S-complex asteroids. Thirty-three observations of 29 unique asteroids were obtained using the IRTF+SpeX instrument in prism and LXD short modes.
Maggie McAdam, Cristina Thomas, Lauren McGraw, Andrew Rivkin, Joshua Emery   +4 more
doaj   +1 more source

Fe, Zn, and Mg stable isotope systematics of acapulcoite lodranite clan meteorites

Meteoritics &Planetary Science, Volume 59, Issue 11, Page 2956-2980, November 2024.
Abstract The processes of planetary accretion and differentiation, whereby an unsorted mass of primitive solar system material evolves into a body composed of a silicate mantle and metallic core, remain poorly understood. Mass‐dependent variations of the isotope ratios of non‐traditional stable isotope systems in meteorites are known to record events ...
Stepan M. Chernonozhkin, Lidia Pittarello, Genevieve Hublet, Philippe Claeys, Vinciane Debaille, Frank Vanhaecke, Steven Goderis   +6 more
wiley   +1 more source

Insights on the Rotational State and Shape of Asteroid (203) Pompeja from TESS Photometry

The Planetary Science Journal
The Main Belt asteroid (203) Pompeja shows evidence of extreme variability in visible and near-infrared spectral slope with time. The observed spectral variability has been hypothesized to be attributed to spatial variations across Pompeja’s surface.
Oriel A. Humes, Josef Hanuš
doaj   +1 more source

Asteroid family identification using the Hierarchical Clustering Method and WISE/NEOWISE physical properties [PDF]

, 2013
Using albedos from WISE/NEOWISE to separate distinct albedo groups within the Main Belt asteroids, we apply the Hierarchical Clustering Method to these subpopulations and identify dynamically associated clusters of asteroids. While this survey is limited to the ~35% of known Main Belt asteroids that were detected by NEOWISE, we present the families ...
arxiv   +1 more source

Cosmic pears from the Havelland (Germany): Ribbeck, the twelfth recorded aubrite fall in history

Meteoritics &Planetary Science, Volume 59, Issue 10, Page 2660-2694, October 2024.
Abstract In 1889 the German poet and novelist Theodor Fontane wrote the popular literary ballad “Herr von Ribbeck auf Ribbeck im Havelland.” The Squire von Ribbeck is described as a gentle and generous person, who often gives away pears from his pear trees to children passing by and continued donating pears after his death.
Addi Bischoff, Markus Patzek, Jean‐Alix Barrat, Jasper Berndt, Henner Busemann, Detlev Degering, Tommaso Di Rocco, Mattias Ek, Dennis Harries, Jose R. A. Godinho, Dieter Heinlein, Armin Kriele, Daniela Krietsch, Colin Maden, Oscar Marchhart, Rachael M. Marshal, Martin Martschini, Silke Merchel, Andreas Möller, Andreas Pack, Herbert Raab, Maximilian P. Reitze, Ina Rendtel, Miriam Rüfenacht, Oliver Sachs, Maria Schönbächler, Anja Schuppisser, Iris Weber, Alexander Wieser, Karl Wimmer   +29 more
wiley   +1 more source

Orbits of the Asteroids Discovered at the Molėtai Observatory in 2000–2004

Open Astronomy, 2014
The paper presents statistics of the asteroids observed and discovered at the Molėtai Observatory, Lithuania in 2000–2004 within the project for astrometric observations of the near-Earth objects (NEOs), the main belt asteroids and comets.
Černis K., Wlodarczyk I., Zdanavičius J.   +2 more
doaj   +1 more source