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Ongoing Mass Transfer in the Interacting Galaxy Pair NGC 1409/1410
Keel, William C.
I present two-band Hubble Space Telescope (HST) STIS imaging and WIYN spectral mapping of ongoing mass transfer in the interacting galaxy pair NGC 1409/1410 (where NGC 1410 is the Seyfert galaxy also cataloged as III Zw 55). Archival snapshot WFPC2 imaging from the survey by Malkan and coworkers showed a dust feature stretching between the galaxie…
An estimate of the D/H ratio in Jupiter and Saturn's regular icy satellites - Implications for the Titan Huygens mission
Mousis, O.
The solar nebula model described by Dubrulle (\cite{Dubrulle1993}) and Drouart et al. (\cite{Drouart1999}) is used to predict the D/H ratio in H2O ice of both Jovian and Saturnian regular satellite systems. These calculations take into account recent scenarios of formation of Jupiter and Saturn's large regular icy satellites developed f…
Study of Flare-Associated X-Ray Plasma Ejections : II. Morphological Classification
KIM, YEON-HAN; MOON, Y. -J.; CHO, K. -S. +2 more
The photospheric boundary of Sun-to-Earth coupled models
Linker, J. A.; Mikić, Z.; Fisher, G. H. +3 more
The least understood component of the Sun-to-Earth coupled system is the solar atmosphere—the visible layers of the Sun that encompass the photosphere, chromosphere, transition region and low corona. Coronal mass ejections (CMEs), principal drivers of space weather, are magnetically driven phenomena that are thought to originate in the low solar c…
Advanced Camera for Surveys Observations of a Strongly Lensed Arc in a Field Elliptical Galaxy
Ford, H. C.; Infante, L.; Zheng, W. +15 more
We report the discovery of a strongly lensed arc system around a field elliptical galaxy in Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) images of a parallel field observed during NICMOS observations of the HST Ultra Deep Field. The ACS parallel data comprise deep imaging in the F435W, F606W, F775W, and F850LP bandpasses. The mai…
The far-infrared spectra of Jupiter and Saturn
Lellouch, E.; Encrenaz, T.; Orton, G. S. +4 more
We present far-infrared, disk-averaged spectra of Jupiter and Saturn that were measured with the Long Wavelength Spectrometer aboard the Infrared Space Observatory. The Long Wavelength Spectrometer covered the wavelength region between 43 and 197 µm and achieved in grating mode a resolving power of 150-300.
The spectra observed in the f…X-ray emission from a brown dwarf in the Pleiades
Briggs, K. R.; Pye, J. P.
We report on the first detection of X-ray emission from a brown dwarf in the Pleiades, the M7-type Roque 14, obtained using the EPIC detectors on XMM-Newton. This is the first X-ray detection of a brown dwarf intermediate in age between ~12 and ~320 Myr. The emission appears persistent, although we cannot rule out flare-like behaviour with a decay…
Europa's opposition surge in the near-infrared: interpreting disk-integrated observations by Cassini VIMS
Buratti, Bonnie J.; Simonelli, Damon P.
Near-infrared observations of Europa's disk-integrated opposition surge by Cassini VIMS, first published in Fig. 4 of Brown et al. (2003, Icarus, 164, 461), have now been modeled with the commonly used Hapke photometric function. The VIMS data set emphasizes observations at 16 solar phase angles from 0.4° to 0.6°—the first time the <1° phase "h…
Atomic Data and Spectral Line Intensities for Ca VIII
Landi, E.; Storey, P. J.; Zeippen, C. J.
In the present work a complete set of energy levels, spontaneous radiative decay rates, and thermally averaged collision strengths are calculated for the first time for the five lowest electron configurations of Ca VIII, corresponding to 40 fine-structure energy levels. Collision data are calculated using the R-matrix approximation, and results ar…
Shumann resonances and electromagnetic transparence in the atmosphere of Titan
Molina-Cuberos, G. J.; Eichelberger, H. U.; Schwingenschuh, K. +6 more
Among the multiple questions that the CASSINI/HUYGENS mission tries to answer is the likelihood of electric discharges in Titan's atmosphere. The instruments ``Huygens Atmospheric Structure Instrument'' and ``Radio and Plasma Wave Science'' will probe the electromagnetic emissions during the Huygens descent and Cassini flybys, respectively. Althou…