Results 21 to 30 of about 951 (137)

A SEARCH FOR ASTEROIDS, MOONS, AND RINGS ORBITING WHITE DWARFS [PDF]

The Astrophysical Journal, 2010
12 pages, 1 figure; submitted to ApJ, 11 February ...
Di Stefano, Rosanne, Howell, Steve B., Kawaler, Steven D.   +2 more
openaire   +2 more sources

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

Mountain‐top spherules: Criteria to identify natural and synthetic particles

Meteoritics &Planetary Science, EarlyView.
Abstract Natural microspherules are important tracers of geologic and environmental processes in modern and ancient deposits. However, anthropogenic contamination can dilute natural collections by releasing synthetic microspherules into the environment.
M. R. Boyd, M. J. Genge
wiley   +1 more source

AsteroidFinder – the space-borne telescope to search for NEO Asteroids [PDF]

International Conference on Space Optics — ICSO 2010, 2017
This paper presents the mission profile as well as the optical configuration of the space-borne AsteroidFinder telescope. Its main objective is to retrieve asteroids with orbits interior to Earth’s orbit. The instrument requires high sensitivity to detect asteroids with a limiting magnitude of equal or larger than 18.5mag (V-Band) and astrometric ...
Hartl, Michael, Mosebach, Herbert, Schubert, Josef, Michaelis, Harald, Mottola, Stefano, Kührt, Ekkehard, Schindler, Karsten   +6 more
openaire   +2 more sources

Searching for minor absorptions on D-type asteroids [PDF]

Proceedings of the International Astronomical Union, 2009
AbstractPreferably located in the outer main belt, D-type asteroids experienced less heating and represent an important population for studies on the origin and evolution of the asteroid belt, as well as the relations between asteroidal and cometary bodies.
openaire   +1 more source

Moon search algorithms for NASA's Dawn Mission to asteroid Vesta [PDF]

SPIE Proceedings, 2012
A moon or natural satellite is a celestial body that orbits a planetary body such as a planet, dwarf planet, or an asteroid. Scientists seek understanding the origin and evolution of our solar system by studying moons of these bodies. Additionally, searches for satellites of planetary bodies can be important to protect the safety of a spacecraft as it ...
Memarsadeghi, Nargess, McFadden, Lucy A., Skillman, David, McLean, Brian, Mutchler, Max, Carsenty, Uri, Palmer, Eric E., Group, the Dawn Mission's Satellite Working   +7 more
openaire   +2 more sources

Contemporary disasters may not kill more women than men: an empirical inquiry into sex‐differentiated fatalities in the twenty‐first century

Disasters, Volume 50, Issue 3, July 2026.
Abstract This study investigates the claim that women are disproportionately more likely to die in disasters by reviewing existing data sources and compiling new datasets on sex‐differentiated disaster fatalities in the twenty‐first century. The analysis is structured by disaster type, covering geophysical, meteorological, climatological, hydrological,
Olivier Rubin
wiley   +1 more source

SEARCH FOR THE RETURN OF ACTIVITY IN ACTIVE ASTEROID 176P/LINEAR [PDF]

The Astronomical Journal, 2014
We present the results of a search for the reactivation of active asteroid 176P/LINEAR during its 2011 perihelion passage using deep optical observations obtained before, during, and after that perihelion passage. Deep composite images of 176P constructed from data obtained between June 2011 and December 2011 show no visible signs of activity, while ...
Hsieh, Henry H., Denneau, Larry, Fitzsimmons, Alan, Hainaut, Olivier R., Ishiguro, Masateru, Jedicke, Robert, Kaluna, Heather M., Keane, Jacqueline V., Kleyna, Jan, Lacerda, Pedro, MacLennan, Eric M., Meech, Karen J., Moskovitz, Nicholas, Riesen, Timm, Schunova, Eva, Snodgrass, Colin, Trujillo, Chadwick A., Urban, Laurie, Vereš, Peter, Wainscoat, Richard J., Yang, Bin   +20 more
openaire   +5 more sources

circPDE4B downregulation triggers GEMIN5‑dependent translational stress response and autophagy to reduce MAPT pathology

Alzheimer's &Dementia, Volume 22, Issue 5, May 2026.
Abstract INTRODUCTION Circular RNAs (circRNAs) are emerging as key regulators of gene expression, synaptic plasticity, and neuronal function in Alzheimer's disease (AD). Here, we characterize the biological actions of circPDE4B, a highly expressed circRNA markedly reduced in AD. METHODS circPDE4B knockdown in neuronal progenitor cells was combined with
Sambhavi Puri, Sophie J. F. van der Spek, Mintao Lin, Zihan Wang, Jacob Porter, Junming Hu, Liyuan Hu, Alejandro N. Rondón‐Ortiz, Alexander Knyshov, Jenna L. Libera, Scott E. Counts, Debomoy K. Lahiri, Julia T. C. W., Andrew Emili, Xiaoling Zhang, Benjamin Wolozin   +15 more
wiley   +1 more source

Thermal Segregation and Reddening in Europa's Double Ridges

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Europa's double ridges often display lower albedo and redder color than their surroundings. Their unique topography may cause sublimation‐driven darkening due to illumination and self‐heating—the process of thermal segregation. We apply an advanced 3D thermophysical model, including shadowing and self‐heating through mutual exchange of ...
Kya C. Sorli, Paul O. Hayne, Lucas Lange, Sylvain Piqueux   +3 more
wiley   +1 more source