Results 41 to 50 of about 3,792 (204)

Production of Oxidants by Ion Bombardment of Icy Moons in the Outer Solar System

Advances in Astronomy, Volume 2011, Issue 1, 2011., 2011
Our groups in Brazil, France and Italy have been active, among others in the world, in performing experiments on physical‐chemical effects induced by fast ions colliding with solids (frozen gases, carbonaceous and organic materials, silicates, etc.) of astrophysical interest. The used ions span a very large range of energies, from a few keV to hundreds
Philippe Boduch, Enio Frota da Silveira, Alicja Domaracka, Oscar Gomis, Xue Yang Lv, Maria Elisabetta Palumbo, Sergio Pilling, Hermann Rothard, Eduardo Seperuelo Duarte, Giovanni Strazzulla, Francois Dulieu   +10 more
wiley   +1 more source

Trans-Neptunian Object Colors as Evidence for a Past Close Stellar Flyby to the Solar System

The Astrophysical Journal Letters
Thousands of small bodies, known as trans-Neptunian objects (TNOs), orbit the Sun beyond Neptune. TNOs are remnants of the planets’ formation from a disk of gas and dust, so it is puzzling that they move mostly on eccentric orbits inclined to the ...
Susanne Pfalzner, Frank W. Wagner, Paul Gibbon   +2 more
doaj   +1 more source

Rotational properties of the binary and non-binary populations in the Trans-Neptunian belt [PDF]

, 2014
We present results for the short-term variability of Binary Trans-Neptunian Objects (BTNOs). We performed CCD photometric observations using the 3.58 m Telescopio Nazionale Galileo, the 1.5 m Sierra Nevada Observatory telescope, and the 1.23 m Centro ...
Morales, N., Noll, K. S., Ortiz, J. L., Thirouin, A.   +3 more
core   +1 more source

Unusual Eccentricity and Inclination Distributions of Trans-Neptunian Objects and Trans-Neptunian Binaries [PDF]

International Journal of Astrophysics and Space Science, 2018
The eccentricity and inclination of trans-Neptunian objects (TNOs) decrease significantly as radius of perihelion increases. Also, the percentage of TNOs in almost circular orbits with low inclinations increases dramatically with perihelion distance.
openaire   +1 more source

Ozone Production by Electron Irradiation of Regolith Ice: Laboratory Study for the Icy Moons

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract We irradiate fine‐grained regolith pure water ice in ultra high vacuum with 5keV $5\,\text{keV}$ and 10keV $10\,\text{keV}$ electrons to study the radiolysis of water ice. The ice regolith is designed to closely mimic the physical characteristics of the surfaces of the icy moons of the Solar System.
Lorenzo Obersnel, André Galli, Rico G. Fausch, Rafael Ottersberg, Peter Wurz   +4 more
wiley   +1 more source

Large‐Angle Anomalies in the CMB

Advances in Astronomy, Volume 2010, Issue 1, 2010., 2010
We review the recently found large‐scale anomalies in the maps of temperature anisotropies in the cosmic microwave background. These include alignments of the largest modes of CMB anisotropy with each other and with geometry and direction of motion of the solar ssystem, and the unusually low power at these largest scales.
Craig J. Copi, Dragan Huterer, Dominik J. Schwarz, Glenn D. Starkman, Eiichiro Komatsu   +4 more
wiley   +1 more source

The New Horizons Extended Mission Target: Arrokoth Search and Discovery

The Planetary Science Journal
Following the Pluto flyby of the New Horizons spacecraft, the mission provided a unique opportunity to explore the Kuiper Belt in situ. The possibility existed to fly by a Kuiper Belt object (KBO), as well as to observe additional objects at distances ...
Marc W. Buie, John R. Spencer, Simon B. Porter, Susan D. Benecchi, Alex H. Parker, S. Alan Stern, Michael Belton, Richard P. Binzel, David Borncamp, Francesca DeMeo, S. Fabbro, Cesar Fuentes, Hisanori Furusawa, Tetsuharu Fuse, Pamela L. Gay, Stephen Gwyn, Matthew J. Holman, H. Karoji, J. J. Kavelaars, Daisuke Kinoshita, Satoshi Miyazaki, Matt Mountain, Keith S. Noll, David J. Osip, Jean-Marc Petit, Neill I. Reid, Scott S. Sheppard, Mark Showalter, Andrew J. Steffl, Ray E. Sterner, Akito Tajitsu, David J. Tholen, David E. Trilling, Harold A. Weaver, Anne J. Verbiscer, Lawrence H. Wasserman, Takuji Yamashita, Toshifumi Yanagisawa, Fumi Yoshida, Amanda M. Zangari   +39 more
doaj   +1 more source

Photometry of Outer Solar System Objects from the Dark Energy Survey. I. Photometric Methods, Light-curve Distributions, and Trans-Neptunian Binaries

The Astrophysical Journal Supplement Series, 2023
We report the methods of and initial scientific inferences from the extraction of precision photometric information for the >800 trans-Neptunian objects (TNOs) discovered in the images of the Dark Energy Survey (DES). Scene-modeling photometry is used to
Pedro H. Bernardinelli, Gary M. Bernstein, Nicholas Jindal, T. M. C. Abbott, M. Aguena, O. Alves, F. Andrade-Oliveira, J. Annis, D. Bacon, E. Bertin, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, L. N. da Costa, M. E. S. Pereira, T. M. Davis, S. Desai, H. T. Diehl, P. Doel, S. Everett, I. Ferrero, D. Friedel, J. Frieman, J. García-Bellido, G. Giannini, D. Gruen, K. Herner, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, K. Kuehn, J. L. Marshall, J. Mena-Fernández, F. Menanteau, R. Miquel, R. L. C. Ogando, A. Palmese, A. Pieres, A. A. Plazas Malagón, M. Raveri, E. Sanchez, I. Sevilla-Noarbe, M. Smith, E. Suchyta, M. E. C. Swanson, G. Tarle, C. To, A. R. Walker, P. Wiseman, Y. Zhang, (The DES Collaboration)   +53 more
doaj   +1 more source

Tracking Neptune's Migration History through High-Perihelion Resonant Trans-Neptunian Objects

, 2016
Recently, Sheppard et al. (2016) presented the discovery of seven new trans-Neptunian objects with moderate eccentricities, perihelia beyond 40 AU, and semimajor axes beyond 50 AU.
Kaib, Nathan A., Sheppard, Scott S.
core   +1 more source

Formation of Asteroid (16) Psyche by a Giant Impact

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Asteroid (16) Psyche is the largest likely metal‐rich asteroid in the Solar System and the target of the NASA Psyche mission. The mission aims to determine whether the asteroid is the core of a differentiated planetesimal that lost its mantle via a giant impact.
Saverio Cambioni, Benjamin P. Weiss, Namya Baijal, Robert Melikyan, Erik Asphaug, John B. Biersteker, Richard P. Binzel, William F. Bottke, Samuel W. Courville, Linda T. Elkins‐Tanton, David J. Lawrence, José M. G. Merayo, Carol A. Raymond, Mark A. Wieczorek, Maria T. Zuber   +14 more
wiley   +1 more source