Search Results - "Nicholson, P.D"

Spatial variations in the dust-to-gas ratio of Enceladus’ plume by Hedman, M.M., Dhingra, D., Nicholson, P.D., Hansen, C.J., Portyankina, G., Ye, S., Dong, Y.

“…•Two instruments onboard Cassini observed a solar occultation by Enceladus’ plume.•These occultation data measure the plume’s dust and gas content at the same…”
Get full text

Cassini-VIMS observations of Saturn’s main rings: II. A spectrophotometric study by means of Monte Carlo ray-tracing and Hapke’s theory by Ciarniello, M., Filacchione, G., D’Aversa, E., Capaccioni, F., Nicholson, P.D., Cuzzi, J.N., Clark, R.N., Hedman, M.M., Dalle Ore, C.M., Cerroni, P., Plainaki, C., Spilker, L.J.

“…•Ring spectrophotometric behavior is investigated on VIMS-Cassini radial mosaics.•Light scattering models are used to infer ring composition and physical…”
Get full text

Titan solar occultation observed by Cassini/VIMS: Gas absorption and constraints on aerosol composition by Bellucci, A., Sicardy, B., Drossart, P., Rannou, P., Nicholson, P.D., Hedman, M., Baines, K.H., Burrati, B.

“…A solar occultation by Titan's atmosphere has been observed through the solar port of the Cassini/VIMS instrument on January 15th, 2006. Transmission spectra…”
Get full text

Distribution of icy particles across Enceladus' surface as derived from Cassini-VIMS measurements by Jaumann, R., Stephan, K., Hansen, G.B., Clark, R.N., Buratti, B.J., Brown, R.H., Baines, K.H., Newman, S.F., Bellucci, G., Filacchione, G., Coradini, A., Cruikshank, D.P., Griffith, C.A., Hibbitts, C.A., McCord, T.B., Nelson, R.M., Nicholson, P.D., Sotin, C., Wagner, R.

“…The surface of Enceladus consists almost completely of water ice. As the band depths of water ice absorptions are sensitive to the size of particles,…”
Get full text

Analysis of a cryolava flow-like feature on Titan by Le Corre, L., Le Mouélic, S., Sotin, C., Combe, J.-P., Rodriguez, S., Barnes, J.W., Brown, R.H., Buratti, B.J., Jaumann, R., Soderblom, J., Soderblom, L.A., Clark, R., Baines, K.H., Nicholson, P.D.

“…This paper reports on the analysis of the highest spatial resolution hyperspectral images acquired by the Visual and Infrared Mapping Spectrometer (VIMS)…”
Get full text

The B-ring’s surface mass density from hidden density waves: Less than meets the eye? by Hedman, M.M., Nicholson, P.D.

“…•Data from multiple stellar occultations are used to study waves in Saturn’s B ring.•Different parts of the Janus 2:1 wave appear to have different pattern…”
Get full text

An observed correlation between plume activity and tidal stresses on Enceladus by Hedman, M. M., Gosmeyer, C. M., Nicholson, P. D., Sotin, C., Brown, R. H., Clark, R. N., Baines, K. H., Buratti, B. J., Showalter, M. R.

“…The plume at the south pole of Enceladus is several times brighter when that moon is near the apocentre of its eccentric orbit around Saturn than when it is…”
Get full text

Exposure age of Saturn's A and B rings, and the Cassini Division as suggested by their non-icy material content by Zhang, Z., Hayes, A.G., Janssen, M.A., Nicholson, P.D., Cuzzi, J.N., de Pater, I., Dunn, D.E.

“…•Large particles scatter more isotropically in regions of high optical depth.•Less than 0.5% non-icy fractions in the A and B Rings.•1%–2% non-icy fractions in…”
Get full text

The Cassini VIMS archive of Titan: From browse products to global infrared color maps by Le Mouélic, S., Cornet, T., Rodriguez, S., Sotin, C., Seignovert, B., Barnes, J.W., Brown, R.H., Baines, K.H., Buratti, B.J., Clark, R.N., Nicholson, P.D., Lasue, J., Pasek, V., Soderblom, J.M.

“…•We present an analysis of the complete Visual Infrared Mapping Spectrometer (VIMS) data archive of Titan acquired by the Cassini mission.•We have computed a…”
Get full text

Mapping polar atmospheric features on Titan with VIMS: From the dissipation of the northern cloud to the onset of a southern polar vortex by Le Mouélic, S., Rodriguez, S., Robidel, R., Rousseau, B., Seignovert, B., Sotin, C., Barnes, J.W., Brown, R.H., Baines, K.H., Buratti, B.J., Clark, R.N., Nicholson, P.D., Rannou, P., Cornet, T.

“…•We present an analysis of the complete VIMS data archive of Titan acquired during the Cassini mission.•We show the progressive dissipation of the north polar…”
Get full text

VLA multi-wavelength microwave observations of Saturn's C and B rings by Zhang, Z., Hayes, A.G., de Pater, I., Dunn, D.E., Janssen, M.A., Nicholson, P.D., Cuzzi, J.N., Butler, B.J., Sault, R.J., Chatterjee, S.

“…•Intrinsic thermal emission in the middle C ring is especially high and wavelength-independent.•Middle C ring contains large particles with a rocky core…”
Get full text

Cassini microwave observations provide clues to the origin of Saturn's C ring by Zhang, Z., Hayes, A.G., Janssen, M.A., Nicholson, P.D., Cuzzi, J.N., de Pater, I., Dunn, D.E., Estrada, P.R., Hedman, M.M.

“…•High observed brightness at near-zero azimuth, imply particles are 70–75% porous.•Intramixed non-icy fractions are generally 1–2%, but reach 6–11% in the mid…”
Get full text

Spectral properties of Titan's impact craters imply chemical weathering of its surface by Neish, C. D., Barnes, J. W., Sotin, C., MacKenzie, S., Soderblom, J. M., Le Mouélic, S., Kirk, R. L., Stiles, B. W., Malaska, M. J., Le Gall, A., Brown, R. H., Baines, K. H., Buratti, B., Clark, R. N., Nicholson, P. D.

“…We examined the spectral properties of a selection of Titan's impact craters that represent a range of degradation states. The most degraded craters have rims…”
Get full text

Self-gravity wake parameters in Saturn’s A and B rings by Nicholson, P.D., Hedman, M.M.

“…An increasing body of evidence shows that, at the sub-km level, Saturn’s main A and B rings are dominated by an ever-changing pattern of elongated, canted…”
Get full text

Connections between spectra and structure in Saturn’s main rings based on Cassini VIMS data by Hedman, M.M., Nicholson, P.D., Cuzzi, J.N., Clark, R.N., Filacchione, G., Capaccioni, F., Ciarniello, M.

“…Saturn’s main rings exhibit variations in both their opacity and their spectral properties on a broad range of spatial scales, and the correlations between…”
Get full text

Observations of Titan’s Northern lakes at 5μm: Implications for the organic cycle and geology by Sotin, C., Lawrence, K.J., Reinhardt, B., Barnes, J.W., Brown, R.H., Hayes, A.G., Le Mouélic, S., Rodriguez, S., Soderblom, J.M., Soderblom, L.A., Baines, K.H., Buratti, B.J., Clark, R.N., Jaumann, R., Nicholson, P.D., Stephan, K.

“…► First infrared observation of Ligeia Mare and several small lakes in Titan’s Northern polar area. ► This paper demonstrates that the lakes have not evolved…”
Get full text

Titan’s cloud seasonal activity from winter to spring with Cassini/VIMS by Rodriguez, S., Le Mouélic, S., Rannou, P., Sotin, C., Brown, R.H., Barnes, J.W., Griffith, C.A., Burgalat, J., Baines, K.H., Buratti, B.J., Clark, R.N., Nicholson, P.D.

“…► An extensive and stable cloud caps the winter pole. ► Transient, convective clouds form in the summer hemisphere at preferential latitudes. ► At summer pole…”
Get full text

Titan's fluvial valleys: Morphology, distribution, and spectral properties by Langhans, M.H., Jaumann, R., Stephan, K., Brown, R.H., Buratti, B.J., Clark, R.N., Baines, K.H., Nicholson, P.D., Lorenz, R.D., Soderblom, L.A., Soderblom, J.M., Sotin, C., Barnes, J.W., Nelson, R.

“…Titan's fluvial channels have been investigated based on data obtained by the Synthetic Aperture Radar (SAR) instrument and the Visible and Infrared Mapping…”
Get full text

Cassini–VIMS observations of Saturn’s main rings: I. Spectral properties and temperature radial profiles variability with phase angle and elevation by Filacchione, G., Ciarniello, M., Capaccioni, F., Clark, R.N., Nicholson, P.D., Hedman, M.M., Cuzzi, J.N., Cruikshank, D.P., Dalle Ore, C.M., Brown, R.H., Cerroni, P., Altobelli, N., Spilker, L.J.

“…•VIS–IR spectrograms are built from ten Cassini–VIMS ring mosaics.•Spectral properties are inferred using VIS slopes, water ice band depths and I/F…”
Get full text

Geomorphological significance of Ontario Lacus on Titan: Integrated interpretation of Cassini VIMS, ISS and RADAR data and comparison with the Etosha Pan (Namibia) by Cornet, T., Bourgeois, O., Le Mouélic, S., Rodriguez, S., Lopez Gonzalez, T., Sotin, C., Tobie, G., Fleurant, C., Barnes, J.W., Brown, R.H., Baines, K.H., Buratti, B.J., Clark, R.N., Nicholson, P.D.

“…► Climate on Titan is analog to that of the Earth in arid/semi-arid zone (such as in the Etosha Basin, Namibia). ► Ontario Lacus lies in a flat basin similar…”
Get full text