Results 51 to 60 of about 9,418 (215)

High‐Order Analytic Expansion of Disturbing Function for Doubly Averaged Circular Restricted Three‐Body Problem

Advances in Astronomy, Volume 2016, Issue 1, 2016., 2016
Terms in the analytic expansion of the doubly averaged disturbing function for the circular restricted three‐body problem using the Legendre polynomial are explicitly calculated up to the fourteenth order of semimajor axis ratio (α) between perturbed and perturbing bodies in the inner case (α < 1), and up to the fifteenth order in the outer case (α > 1)
Takashi Ito, Elbaz I. Abouelmagd
wiley   +1 more source

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

Stellar occultations enable milliarcsecond astrometry for Trans-Neptunian objects and Centaurs [PDF]

Astronomy & Astrophysics, 2020
Context. Trans-Neptunian objects (TNOs) and Centaurs are remnants of our planetary system formation, and their physical properties have invaluable information for evolutionary theories.
F. Rommel, F. Braga-Ribas, J. Desmars, J. Camargo, J. L. Ortiz, B. Sicardy, R. Vieira-Martins, M. Assafin, P. Santos-Sanz, R. Duffard, E. Fern'andez-Valenzuela, J. Lecacheux, B. Morgado, G. Benedetti-Rossi, A. Gomes-J'unior, C. Pereira, D. Herald, W. Hanna, J. Bradshaw, N. Morales, J. Brimacombe, A. Burtovoi, T. Carruthers, J. Barros, M. Fiori, A. Gilmore, D. Hooper, K. Hornoch, C. Jacques, T. Janik, S. Kerr, P. Kilmartin, J. Winkel, G. Naletto, D. Nardiello, V. Nascimbeni, J. Newman, A. Ossola, A. Pál, E. Pimentel, P. Pravec, S. Sposetti, A. Stechina, R. Sz'akats, Y. Ueno, L. Zampieri, J. Broughton, J. Dunham, D. Dunham, D. Gault, T. Hayamizu, K. Hosoi, E. Jehin, R. Jones, K. Kitazaki, R. Komvz'ik, A. Marciniak, A. Maury, H. Mikuvz, P. Nosworthy, J. F. Polleri, S. Rahvar, R. Sfair, P. Siqueira, C. Snodgrass, P. Sogorb, H. Tomioka, J. Tregloan-Reed, O. NacionalMCTIC, 77 R.GeneralJos'eCristino, Bairro Imperial de Sao Crist'ovao, R. Janeiro, Brazil, Federal University of Technology - Paran'a, Rua Sete de Setembro, 3165, Curitiba, L. LIneA, Inct do e-Universo, 77 RuaGal.Jos'eCristino, Institut Polytechnique des Sciences Avanc'ees Ipsa, 63 boulevard de Brandebourg, F-94200 Ivry-sur-Seine, France, Institut de M'ecanique C'eleste et de Calcul des 'Eph'em'erides, Imcce, Observatoire de Paris, P. university, Cnrs, Sorbonne Universit'es, 06 UPMCUnivParis, U. Lille, 77, Av. Denfert-Rochereau, F. Paris, Inst. de Astrof'isica de Andaluc'ia, Iaa-Csic, Glorieta de la Astronom'ia sn, 18012 Granada, Spain., Lesia, Universit'e Psl, Sorbonne Universit'e, U. Diderot, Sorbonne Paris Cit'e, 5. P. Janssen, 92190 Meudon, Observatorio do ValongoUFRJ, 43 LadeiraPedroAntonio, Florida Space Institute, U. Florida, 12354 Research Parkway, 1. Partnership, Orlando, Fl, Usa, U. -. S. P. S. University, Grupo de Dinamica Orbital e Planetologia, Cep 12516-410, Guaratinguet'a, Sp, International Occultation Timing Association, P. O. B. 423, Greenbelt, MD 20768, Trans - Tasman Occultation Alliance, Wellington PO Box 3181, N. Zealand., Canberra Astronomical Society, Canberra, act, Australia., Samford Valley Observatory, Queensland., Coral Towers Observatory, Cairns, Qld 4870, Centre of Studies, Activities for Space 'G. Colombo', U. Padova, 15 ViaVenezia, 35131, I. Padova, 5. vicolodell'Osservatorio, I. Padova, Italy, Jewel Box Observatory, 69 Falcon St, Bayview Heights Qld 4868, S. Observatory, Oliveira, D. Physics, A. '. Galilei, 8. ViaF.Marzolo, Padova, Mount John University Observatory, U. Canterbury, 59 P.O.Box, Lake Tekapo 7945, A. Institute, Academy of Sciences of the Czech Republic, Frivcova 298, 251 65 Ondvrejov, Czech Republic, Astronomical Association of Queensland, 5. C. Street, Pimpama Qld 4209, A. Univ., Cnes, Lam, Marseille, S. -. S. O. T. A. Switzerland, Swiss Astronomical Society, Switzerland., K. Observatory, Research Centre in Astronomy, Earth Sciences, 17 Konkoly-ThegeMikl'os'ut15-, 1121 Budapest, Hungary., E. University, D. O. Astronomy, 1A P'azm'anyP'eters'et'any, 1121 Budapest, Elte Eotvos Lor'and University, I. O. Physics, C. D. A. D. L. A. R. -. Caar, Reconquista, Argentina., Japan Occultation Information Network, Japan., Reedy Creek Observatory, G. Coast., S. Institute, U. Liege, All'ee du 6 aout, 19C, 4000 Liege, Belgium, Slovak Academy of Sciences, 059 60 Tatransk'a Lomnica, Slovakia, A. Institute, F. O. Physics, Adam Mickiewicz University, Poznán, Poland., S. Space, Chile., U. Ljubljana, Faculty of Mathematics, Physics, 19 Jadranska, 1000 Ljubljana, Slovenia., P. O. I. S. P. D. A. -. Opspa, Sharif University of Technology, P. O. Tehran, Iran, Institute for Astronomy, U. Edinburgh, R. Observatory, Edinburgh EH9 3HJ, Uk, Club d'astronomie Luberon Sud Astro, La Bastide des Jourdans, Centro de Astronom'ia, U. Antofagasta, Avenida U. de Antofagasta, 02800 Antofagasta   +229 more
semanticscholar   +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

Taxonomy of Centaurs and Trans-Neptunian Objects [PDF]

The Astronomical Journal, 2005
Trans-Neptunian objects (TNOs) and Centaurs display the widest color diversity in comparison to other small solar system bodies. The investigation of their properties can help in understanding the evolution of these objects. In this paper we propose a classification scheme based on multivariate statistical analysis of a homogeneous, high-quality set of
Barucci, Maria Antonietta, Belskaya, Irina, Fulchignoni, Marcello, Birlan, Mirel   +3 more
openaire   +3 more sources

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
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OSSOS. XXIX. The Population and Perihelion Distribution of the Detached Kuiper Belt

The Planetary Science Journal, 2023
The detached trans-Neptunian objects (TNOs) are those with semimajor axes beyond the 2:1 resonance with Neptune that are neither resonant nor scattering.
Matthew Beaudoin, Brett Gladman, Yukun Huang, Michele Bannister, J. J. Kavelaars, Jean-Marc Petit, Kathryn Volk   +6 more
doaj   +1 more source