Results 21 to 30 of about 550,094 (191)

The Collisional Evolution of the Primordial Kuiper Belt, Its Destabilized Population, and the Trojan Asteroids

The Planetary Science Journal, 2023
The tumultuous early era of outer solar system evolution culminated when Neptune migrated across the primordial Kuiper Belt (PKB) and triggered a dynamical instability among the giant planets.
William F. Bottke, David Vokrouhlický, Raphael Marschall, David Nesvorný, Alessandro Morbidelli, Rogerio Deienno, Simone Marchi, Luke Dones, Harold F. Levison   +8 more
doaj   +1 more source

Thermal model of water and CO activity of Comet C/1995 O1 (Hale-Bopp) [PDF]

, 2011
An investigation of the activity of Comet C/1995 O1 (Hale-Bopp) with a thermophysical nucleus model that does not rely on the existence of amorphous ice is presented.
H.U. Keller, U. Motschmann, N. Gortsas, Kührt, Ekkehard, Kührt, E., Gortsas, N., Keller, H.U., E. Kührt, Motschmann, U.   +8 more
core   +1 more source

The Origin of Comets [PDF]

Symposium - International Astronomical Union, 1972
The evolution of the solar system is surveyed, it being presumed that the Sun, Jupiter, and Saturn formed rather quickly and essentially with the composition of the original collapsing cloud of dust and gas. Just as the refractory material of the cloud is considered to have formed into planetesimals, from which the terrestrial planets collected, so is ...
openaire   +1 more source

Genotoxicity of nitroso compounds and sodium dichromate in a model combining organ cultures of human nasal epithelia and the comet assay [PDF]

, 2001
Genotoxic effects of xenobiotics are a possible step in tumor initiation in the mucosa of the upper aerodigestive tract. Using the comet assay, detecting genotoxicity in human tissue has been restricted to single incubations in vitro, but in vivo most ...
Bergner, Albrecht, Kastenbauer, Ernst R., Gamarra, Fernando, Kleinsasser, Norbert H., Harréus, Ulrich A., Huber, Rudolf M., Wallner, Barbara C., Juchhoff, Jutta   +7 more
core   +1 more source

Measuring Physical Properties at the Surface of a Comet Nucleus [PDF]

, 2021
The European Space Agency’s cornerstone mission Rosetta is due for launch in January 2003. It will perform a rendezvous with comet 46P/Wirtanen beyond 3 AU and, following an initial mapping phase, deploy a lander to a selected site on the nucleus surface.
Ball, Andrew Jonathan, Ball, Andrew J.
core   +1 more source

COMETARY VOLATILES AND THE ORIGIN OF COMETS [PDF]

The Astrophysical Journal, 2012
We describe recent results on the CO/CO2/H2O composition of comets together with a survey of older literature (primarily for CO/H2O) and compare these with models of the protoplanetary disk. Even with the currently small sample, there is a wide dispersion in abundance ratios and little if any systematic difference between Jupiter-family comets (JFCs ...
A'Hearn, Michael F., Feaga, Lori M., Keller, H. Uwe, Kawakita, Hideyo, Hampton, Donald L., Kissel, Jochen, Klaasen, Kenneth P., Mcfadden, Lucy A., Meech, Karen J., Schultz, Peter H., Sunshine, Jessica M., Thomas, Peter C., Veverka, Joseph, Yeomans, Donald K., Besse, Sebastien, Bodewits, Dennis, Farnham, Tony L., Groussin, Olivier, Kelley, Michael S., Lisse, Carey M., Merlin, Frederic, Protopapa, Silvia, Wellnitz, Dennis D.   +22 more
openaire   +3 more sources

Comparative Evaluation of Genotoxicity of Captan in Amphibian Larvae (Xenopus laevis and Pleurodeles waltl) Using the Comet Assay and the Micronucleus Test [PDF]

, 2006
Captan (N-trichloromethylthio-4-cyclohexene-1,2-dicarboximide) is a fungicide used to inhibit the growth of many types of fungi on plants used as foodstuffs.
Gauthier, Laury, Devaux, Alain, Gauthier, L., Mouchet, F., Ferrier, V., Mouchet, Florence, Ferrier, Vincent, Mailhes, Corinne, Devaux, A.   +8 more
core   +1 more source

The CoPhyLab comet-simulation chamber [PDF]

, 2021
The Comet Physics Laboratory (CoPhyLab) is an international research program to study the physical properties of cometary analog materials under simulated space conditions.
C. Kreuzig, E. Kaufmann, Lethuillier, A., Otto, K., Tiefenbacher, P., Tiefenbacher, P,, Blum, J.,, J. Blum, Sierks, H., M. Schweighart, B. Gundlach, Haack, D., Schweighart, M., Tiefenbacher, P.,, E. Kührt, Feller, C., Kaufmann, E., K. Otto, D. Bischoff, Pommerol, A., Bischoff, D.,, Güttler, C.,, Lethuillier, A.,, G. Kargl, Kreuzig, C.,, Molinski, N. S.,, A. Lethuillier, Kührt, E.,, Haack, D.,, Bischoff, D., Knollenberg, J., Kreuzig, C., Gundlach, B.,, T. Gilke, Kührt, E., Otto, K.,, Kaufmann, Erika,, A. Pommerol, H. Sierks, Schweighaert, M., P. Tiefenbacher, Sierks, H.,, Hänni, N.,, C. Feller, Pommerol, A.,, Capelo, H.,, Gilke, T., Macher, W., Gilke, T.,, W. Macher, Molinski, N.S., Hänni, N., N. S. Molinski, Capelo, H., H. Capelo, C. Güttler, Blum, J., Molinski, N., Kargl, G.,, Kargl, G., Schweighart, M.,, Gundlach, B., Macher, W.,, Molinski, N. S., D. Haack, N. Hänni, Feller, C.,, Knollenberg, J.,, Güttler, C., J. Knollenberg   +69 more
core   +2 more sources

Spectrometer Testing: Dark frame evaluation of StellarNet Black Comet spectrometer [PDF]

, 2017
This document presents an evaluation of the dark current present in a StellarNet Black Comet spectrometer for potential applications in a number of research projects within the Sensors and Instrumentation Research Group and the Institute of Materials and
Smith, DR, Hobson, PR
core   +3 more sources

TESS-CoMET

, 2018
R script to calculate CoMET function in ...
Guillermo Ortí (69121), Ortí, Guillermo, Rafael Rivero-Vega (6001235), Davis, Aaron, Rivero-Vega, Rafael, Emanuell Duarte Ribeiro (6001232), Aaron Davis (205288), Ricardo Betancur-R (245801), Duarte Ribeiro, Emanuell, Betancur-R, Ricardo   +9 more
core   +1 more source