The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform
Michael J. S. Belton - One of the best experts on this subject based on the ideXlab platform.
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leading trailing albedo asymmetries of Thebe amalthea and metis
Icarus, 2000Co-Authors: David Simonelli, Joseph A. Burns, Laura Rossier, P C Thomas, Joseph Veverka, Michael J. S. BeltonAbstract:Abstract Using Galileo clear-filter images (effective wavelength ≈0.64 μm), we have created the first albedo maps of the small inner jovian satellites Thebe, Amalthea, and Metis. These maps clearly show that the leading sides of all three satellites are significantly brighter than their corresponding trailing sides, confirming and extending a result first reported by P. C. Thomas et al. (1998, Icarus 135 , 360–371). In particular, on all three moons the leading side is brighter than the trailing side by 25 to 30%. The fact that the direction and size of this albedo asymmetry is identical from satellite to satellite suggests that one common physical mechanism is governing the global albedo patterns of all three moons. The most plausible such mechanism is the impact of macroscopic meteoroids that originated outside the jovian system. These impacts, which eject the dust that forms Jupiter's ring system (M. E. Ockert-Bell et al. , 1999, Icarus 138 , 188–213; J. A. Burns et al. , 1999, Science 284 , 1146–1150), are probably also responsible for brightening the leading sides of these small satellites.
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Leading/Trailing Albedo Asymmetries of Thebe, Amalthea, and Metis
Icarus, 2000Co-Authors: David Simonelli, Joseph A. Burns, Laura Rossier, P C Thomas, Joseph Veverka, Michael J. S. BeltonAbstract:Abstract Using Galileo clear-filter images (effective wavelength ≈0.64 μm), we have created the first albedo maps of the small inner jovian satellites Thebe, Amalthea, and Metis. These maps clearly show that the leading sides of all three satellites are significantly brighter than their corresponding trailing sides, confirming and extending a result first reported by P. C. Thomas et al. (1998, Icarus 135 , 360–371). In particular, on all three moons the leading side is brighter than the trailing side by 25 to 30%. The fact that the direction and size of this albedo asymmetry is identical from satellite to satellite suggests that one common physical mechanism is governing the global albedo patterns of all three moons. The most plausible such mechanism is the impact of macroscopic meteoroids that originated outside the jovian system. These impacts, which eject the dust that forms Jupiter's ring system (M. E. Ockert-Bell et al. , 1999, Icarus 138 , 188–213; J. A. Burns et al. , 1999, Science 284 , 1146–1150), are probably also responsible for brightening the leading sides of these small satellites.
David Simonelli - One of the best experts on this subject based on the ideXlab platform.
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leading trailing albedo asymmetries of Thebe amalthea and metis
Icarus, 2000Co-Authors: David Simonelli, Joseph A. Burns, Laura Rossier, P C Thomas, Joseph Veverka, Michael J. S. BeltonAbstract:Abstract Using Galileo clear-filter images (effective wavelength ≈0.64 μm), we have created the first albedo maps of the small inner jovian satellites Thebe, Amalthea, and Metis. These maps clearly show that the leading sides of all three satellites are significantly brighter than their corresponding trailing sides, confirming and extending a result first reported by P. C. Thomas et al. (1998, Icarus 135 , 360–371). In particular, on all three moons the leading side is brighter than the trailing side by 25 to 30%. The fact that the direction and size of this albedo asymmetry is identical from satellite to satellite suggests that one common physical mechanism is governing the global albedo patterns of all three moons. The most plausible such mechanism is the impact of macroscopic meteoroids that originated outside the jovian system. These impacts, which eject the dust that forms Jupiter's ring system (M. E. Ockert-Bell et al. , 1999, Icarus 138 , 188–213; J. A. Burns et al. , 1999, Science 284 , 1146–1150), are probably also responsible for brightening the leading sides of these small satellites.
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Leading/Trailing Albedo Asymmetries of Thebe, Amalthea, and Metis
Icarus, 2000Co-Authors: David Simonelli, Joseph A. Burns, Laura Rossier, P C Thomas, Joseph Veverka, Michael J. S. BeltonAbstract:Abstract Using Galileo clear-filter images (effective wavelength ≈0.64 μm), we have created the first albedo maps of the small inner jovian satellites Thebe, Amalthea, and Metis. These maps clearly show that the leading sides of all three satellites are significantly brighter than their corresponding trailing sides, confirming and extending a result first reported by P. C. Thomas et al. (1998, Icarus 135 , 360–371). In particular, on all three moons the leading side is brighter than the trailing side by 25 to 30%. The fact that the direction and size of this albedo asymmetry is identical from satellite to satellite suggests that one common physical mechanism is governing the global albedo patterns of all three moons. The most plausible such mechanism is the impact of macroscopic meteoroids that originated outside the jovian system. These impacts, which eject the dust that forms Jupiter's ring system (M. E. Ockert-Bell et al. , 1999, Icarus 138 , 188–213; J. A. Burns et al. , 1999, Science 284 , 1146–1150), are probably also responsible for brightening the leading sides of these small satellites.
Vieira R Martins - One of the best experts on this subject based on the ideXlab platform.
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ccd astrometric observations of amalthea and Thebe
Astronomy and Astrophysics, 2005Co-Authors: C H Veiga, Vieira R MartinsAbstract:This paper presents the results of observations of Jupiter's satellites Amalthea and Thebe made in 1995, 1996 and 2001 at the Laboratorio Nacional de Astrofisica (LNA), Brazil. The observations were made in visible light wavelengths with a 1.6 m reflector telescope and the light of Jupiter was covered by a mask placed near the CCD surface. The already published positions for 1995, whose astrometric reduction used the Galilean satellites, are now reduced using the stars in the CCD fields like the new positions of 1996 and 2001. The 2001 data are much better than those obtained in 1995, and that those from 1996 show large residuals. Considering the 310 frames observed, the mean residual is about 0$\farcs$01 and the standard deviation is about 0$\farcs$15.
J E Arlot - One of the best experts on this subject based on the ideXlab platform.
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ccd astrometric observations of amalthea and Thebe in the gaia era
Monthly Notices of the Royal Astronomical Society, 2017Co-Authors: V. Robert, E. Saquet, Fanny Colas, J E ArlotAbstract:In the framework of the 2014-2015 campaign of mutual events, we observed Jupiter's inner satellites Amalthea (JV) and Thebe (JXIV). We focused on estimating whether the positioning accuracy determined from direct astrometry could compete with that derived from photometric observations of eclipses, for dynamical purposes. We present the analysis of 35 observations of Amalthea and 19 observations of Thebe realized with the 1-m telescope at Pic du Midi observatory during three nights in 2015, January and April. The images were reduced through an optimal process that includes image and spherical corrections using the Gaia-DR1 catalog to provide the most accurate equatorial (RA, Dec) positions. We compared the observed positions of both satellites with the theoretical positions from JPL JUP310 satellite ephemerides and from IMCCE INPOP13c planetary ephemeris. The rms (O-C) in equatorial positions are ±112 mas for the Amalthea observations, or 330 km at Jupiter, and ±90 mas for the Thebe observations, or 270 km at Jupiter. Using the Gaia-DR1 catalog allowed us to eliminate systematic errors due to the star references up to 120 mas, or 350 km at Jupiter, by comparison with the UCAC4 catalog.
P C Thomas - One of the best experts on this subject based on the ideXlab platform.
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leading trailing albedo asymmetries of Thebe amalthea and metis
Icarus, 2000Co-Authors: David Simonelli, Joseph A. Burns, Laura Rossier, P C Thomas, Joseph Veverka, Michael J. S. BeltonAbstract:Abstract Using Galileo clear-filter images (effective wavelength ≈0.64 μm), we have created the first albedo maps of the small inner jovian satellites Thebe, Amalthea, and Metis. These maps clearly show that the leading sides of all three satellites are significantly brighter than their corresponding trailing sides, confirming and extending a result first reported by P. C. Thomas et al. (1998, Icarus 135 , 360–371). In particular, on all three moons the leading side is brighter than the trailing side by 25 to 30%. The fact that the direction and size of this albedo asymmetry is identical from satellite to satellite suggests that one common physical mechanism is governing the global albedo patterns of all three moons. The most plausible such mechanism is the impact of macroscopic meteoroids that originated outside the jovian system. These impacts, which eject the dust that forms Jupiter's ring system (M. E. Ockert-Bell et al. , 1999, Icarus 138 , 188–213; J. A. Burns et al. , 1999, Science 284 , 1146–1150), are probably also responsible for brightening the leading sides of these small satellites.
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Leading/Trailing Albedo Asymmetries of Thebe, Amalthea, and Metis
Icarus, 2000Co-Authors: David Simonelli, Joseph A. Burns, Laura Rossier, P C Thomas, Joseph Veverka, Michael J. S. BeltonAbstract:Abstract Using Galileo clear-filter images (effective wavelength ≈0.64 μm), we have created the first albedo maps of the small inner jovian satellites Thebe, Amalthea, and Metis. These maps clearly show that the leading sides of all three satellites are significantly brighter than their corresponding trailing sides, confirming and extending a result first reported by P. C. Thomas et al. (1998, Icarus 135 , 360–371). In particular, on all three moons the leading side is brighter than the trailing side by 25 to 30%. The fact that the direction and size of this albedo asymmetry is identical from satellite to satellite suggests that one common physical mechanism is governing the global albedo patterns of all three moons. The most plausible such mechanism is the impact of macroscopic meteoroids that originated outside the jovian system. These impacts, which eject the dust that forms Jupiter's ring system (M. E. Ockert-Bell et al. , 1999, Icarus 138 , 188–213; J. A. Burns et al. , 1999, Science 284 , 1146–1150), are probably also responsible for brightening the leading sides of these small satellites.
