Search Publications
A Calibration of NICMOS Camera 2 for Low Count Rates
Gladders, M. D.; Lidman, C.; Amanullah, R. +19 more
NICMOS 2 observations are crucial for constraining distances to most of the existing sample of z\gt 1 SNe Ia. Unlike conventional calibration programs, these observations involve long exposure times and low count rates. Reciprocity failure is known to exist in HgCdTe devices and a correction for this effect has already been implemented for high an…
Parallel-dominant and perpendicular-dominant components of the fast bulk flow: Comparing with the PSBL beams
Dunlop, M. W.; Baumjohann, W.; Rème, H. +3 more
Utilizing multipoint observations by the Cluster satellites, we investigated the ion distributions of the fast bulk flows (FBFs) in the plasma sheet. Simultaneous observation by C1 and C3 revealed that parallel-dominant and perpendicular-dominant components of the flows coexist and correspond to Bx-dominant and Bz-dominant ma…
Modelling galaxy spectra in presence of interstellar dust - III. From nearby galaxies to the distant Universe
Cassarà, L. P.; Piovan, L.; Chiosi, C.
Improving upon the standard evolutionary population synthesis technique, we present spectrophotometric models of galaxies with morphology going from spherical structures to discs, properly accounting for the effect of dust in the interstellar medium (ISM). The models contain three main physical components: the diffuse ISM made of gas and dust, the…
An Interpretation of a Possible Mechanism for the First Ground-Level Enhancement of Solar Cycle 24
Gan, W. Q.; Rodríguez-Pacheco, J.; Li, Y. P. +1 more
It is well known that solar flares and shocks driven by coronal mass ejections (CMEs) are high-energy particle acceleration processes that might cause a high-energy particle event known as a ground-level enhancement (GLE). In this context, we have attempted to understand the processes responsible for the first GLE event (GLE71 17 May 2012 01:50 UT…
Study of olivine-rich dark halo crater - Beaumont L in Mare Nectaris using high resolution remote sensing data
Chauhan, Prakash; Rajawat, A. S.; Kumar, A. S. Kiran +1 more
Study of dark-haloed craters (DHCs) can provide important information about the geology, mineralogy and evolution of certain hidden mare deposits known as cryptomare. Some DHCs have been identified in the Mare Nectaris region of the near side of the Moon. Beaumont L represents one such DHC situated on the western flank of the Nectaris basin. Moon …
Thickness of Saturn's B ring as derived from seasonal temperature variations measured by Cassini CIRS
Ferrari, C.; Reffet, E.; Verdier, M.
Structural and thermal properties of Saturn's B ring and its particles are derived from orbital and seasonal temperatures variations observed by the Cassini CIRS spectrometer between 2004 and 2009 equinox. Our multiscale thermal model (Ferrari, C., Reffet, E. [2013]. Icarus 223, 28-39), which assumes negligible heat transfer by vertical motion of …
Environment of the Submillimeter-bright Massive Starburst HFLS3 at z ~ 6.34
Pérez-Fournon, I.; Ivison, R. J.; Clements, D. L. +28 more
We describe the search for Lyman break galaxies (LBGs) near the submillimeter-bright starburst galaxy HFLS3 at z = 6.34 and a study on the environment of this massive galaxy during the end of reionization. We performed two independent selections of LBGs on images obtained with the Gran Telescopio Canarias (GTC) and the Hubble Space Telescope (HST)…
The Plasma Environment in Comets over a Wide Range of Heliocentric Distances: Application to Comet C/2006 P1 (McNaught)
Rubin, M.; Shou, Y.; Toth, G. +3 more
On 2007 January 12, comet C/2006 P1 (McNaught) passed its perihelion at 0.17 AU. Abundant remote observations offer plenty of information on the neutral composition and neutral velocities within 1 million kilometers of the comet nucleus. In early February, the Ulysses spacecraft made an in situ measurement of the ion composition, plasma velocity, …
Ion composition in Titan's exosphere via the Cassini Plasma Spectrometer I: T40 encounter
Johnson, R. E.; Smith, H. T.; Crary, F. J. +1 more
investigate the complex interaction between Saturn's magnetosphere and Titan's upper ionosphere using ion data acquired by the Cassini Plasma Spectrometer (CAPS) during the T40 encounter. Bounds on ion-group abundances at altitudes between ~2733 and ~12,541 km are determined by fitting mass spectra with model functions derived from instrument cali…
Faint Luminescent Ring over Saturn’s Polar Hexagon
Filacchione, Gianrico; Adriani, Alberto; Oliva, Fabrizio +2 more
Springtime insolation is presently advancing across Saturn's north polar region. Early solar radiation scattered through the gaseous giant's atmosphere gives a unique opportunity to sound the atmospheric structure at its upper troposphere/lower stratosphere at high latitudes. Here, we report the detection of a tenuous bright structure in Saturn's …