Search Publications
Missions
Journals
Publication Years
Probing the Relation Between X-Ray-Derived and Weak-Lensing-Derived Masses for Shear-Selected Galaxy Clusters. I. A781
Hughes, John P.; Sehgal, Neelima; Tyson, J. Anthony +4 more
We compare X-ray and weak-lensing masses for four galaxy clusters that comprise the top-ranked shear-selected cluster system in the Deep Lens Survey. The weak-lensing observations of this system, which is associated with A781, are from the Kitt Peak Mayall 4 m telescope, and the X-ray observations are from both Chandra and XMM-Newton. For a faithf…
Radiation effects on space-based stellar photometry: theoretical models and empirical results for CoRoT Space Telescope
Auvergne, M.; Rolland, G.; Pinheiro da Silva, L. +1 more
Convection, Rotation and planetary Transits (CoRoT) is a space mission dedicated to stellar seismology and the search for extrasolar planets. Both scientific programs are based on very high precision photometry and require long, uninterrupted observations. The instrument is based on an afocal telescope and a wide-field camera, consisting of four E…
High-latitude plasma convection during Northward IMF as derived from in-situ magnetospheric Cluster EDI measurements
Haaland, S. E.; Torbert, R. B.; Quinn, J. M. +4 more
In this study, we investigate statistical, systematic variations of the high-latitude convection cell structure during northward IMF. Using 1-min-averages of Cluster/EDI electron drift observations above the Northern and Southern polar cap areas for six and a half years (February 2001 till July 2007), and mapping the spatially distributed measurem…
Dust aerosols above the south polar cap of Mars as seen by OMEGA
Bibring, J. -P.; Gondet, B.; Langevin, Y. +4 more
The time evolution of atmospheric dust at high southern latitudes on Mars has been determined using observations of the south seasonal cap acquired in the near infrared (1-2.65 µm) by OMEGA/Mars Express in 2005. Observations at different solar zenith angles and one EPF sequence demonstrate that the reflectance in the 2.64 µm saturated …
The Subaru/XMM-Newton Deep Survey (SXDS). V. Optically Faint Variable Object Survey
Ouchi, Masami; Wang, Lifan; Ueda, Yoshihiro +19 more
We present our survey for optically faint variable objects using multiepoch (8-10 epochs over 2-4 years) i'-band imaging data obtained with Subaru Suprime-Cam over 0.918 deg2 in the Subaru/XMM-Newton Deep Field (SXDF). We found 1040 optically variable objects by image subtraction for all the combinations of images at different epochs. T…
Hemispheric distributions of HCl above and below the Venus’ clouds by ground-based 1.7 µm spectroscopy
Imamura, T.; Kasaba, Y.; Sagawa, H. +8 more
The abundance of hydrogen chloride (HCl) in the Venus atmosphere was measured by ground-based IR spectroscopy. The dayside measurements were performed in May 2007 with a resolution of 40,000, and the nightside measurements in October 1999 with a resolution of 1000. The hemispheric distributions of the HCl mixing ratio measured above the Venus' clo…
Extremely massive young clusters in NGC 1365
Pantin, E.; Panuzzo, P.; Alloin, D. +5 more
Context: In a previous work, three bright mid-infrared/radio sources were discovered in the nuclear region of starburst/AGN galaxy NGC 1365.
Aims: The present study aims to confirm that these sources are indeed young and massive “embedded” clusters, and derive their physical parameters, such as extinction, age and mass.
Methods: Using ISAA…
A Hot Microflare Observed with RHESSI and Hinode
Milligan, Ryan O.
RHESSI and Hinode observations of a GOES B-class flare are combined to investigate the origin of 15 MK plasma. The absence of any detectable hard X-ray emission coupled with weak blueshifted emission lines (indicating upward velocities averaging only 14 km s-1) suggests that this was a result of direct heating in the corona, as opposed …
CME liftoff with high-frequency fragmented type II burst emission
Vainio, R.; Pomoell, J.; Pohjolainen, S.
Aims: Solar radio type II bursts are rarely seen at frequencies higher than a few hundred MHz. Since metric type II bursts are thought to be signatures of propagating shock waves, it is of interest to know how these shocks, and the type II bursts, are formed. In particular, how are high-frequency, fragmented type II bursts created? Are there diffe…
Abundances of planetary nebula NGC 2392
Pottasch, S. R.; Bernard-Salas, J.; Roellig, T. L.
The spectra of the planetary nebula