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Final analysis of ELAIS 15-µm observations: method, reduction and catalogue
Aussel, H.; Pozzi, F.; Franceschini, A. +15 more
We present the final analysis of the European Large Area Infrared Space Observatory (ISO) Survey (ELAIS) 15-µm observations, carried out with the ISO Camera (ISOCAM) instrument on board the ISO.
The data-reduction method, known as the Lari Method, is based on a mathematical model of the behaviour of the detector and was specifically des…Unveiling the nature of the high energy source IGRJ19140+0951
Rodriguez, J.; Schultz, J.; Beckmann, V. +3 more
We report on high energy observations of IGR J19140+0951 performed with RXTE on three occasions in 2002, 2003 and 2004, and INTEGRAL during a very well sampled and unprecedented high energy coverage of this source from early-March to mid-May 2003. Our analysis shows that IGR J19140+0951 spends most of its time in a very low luminosity state, proba…
Constraints on the star formation history of the Large Magellanic Cloud
Santiago, B. X.; Kerber, L. O.; Javiel, S. C.
We present the analysis of deep colour-magnitude diagrams (CMDs) of 6 stellar fields in the LMC. The data were obtained using HST/WFPC2 in the F814W (∼I) and F555W (∼V) filters, reaching V555 ∼ 26.5. We discuss and apply a method of correcting CMDs for photometric incompleteness. A method to generate artificial CMDs based on a model sta…
Infrared mergers and infrared quasi-stellar objects with galactic winds - III. Mrk 231: an exploding young quasi-stellar object with composite outflow/broad absorption lines (and multiple expanding superbubbles)
Zheng, W.; Terlevich, R.; Lípari, S. +3 more
We present a study of outflow (OF) and broad absorption line (BAL) systems in Mrk 231, and in similar infrared (IR) quasi-stellar objects (QSOs). This study is based mainly on one-dimensional and two-dimensional spectroscopy (obtained at La Palma/William Herschel Telescope, Hubble Space Telescope, International Ultraviolet Explorer, European South…
Coronal Mass Ejections and Galactic Cosmic-Ray Modulation
Gopalswamy, N.; Yashiro, S.; Lara, A. +3 more
We present a study of the long-term evolution of coronal mass ejections (CMEs) observed by the Large Angle and Spectrometric Coronograph (LASCO) on board SOHO during the ascending, maximum, and part of the descending phases of solar cycle 23 and their relation with the modulation of galactic cosmic-ray (GCR) intensity observed at 1 AU by the Clima…
Carbon monoxide fluorescence from Titan's atmosphere
Lellouch, E.; López-Valverde, M. A.; Coustenis, A.
We report on the discovery of emissions due to carbon monoxide from Titan's atmosphere, from mid-infrared observations with the ISAAC spectrometer at the Very Large Telescope and covering the 4.50-4.85 µm range. We detected about 45 emission lines coinciding with CO ro-vibrational lines, including CO(1-0) (P18 to R11) and CO(2-1) (P11 to R11…
Atmospheres and Plasma Interactions at Saturn's Largest Inner Icy Satellites
Saur, Joachim; Strobel, Darrell F.
We explore the possible existence of atmospheres on Saturn's icy satellites, Mimas, Enceladus, Tethys, Dione, and Rhea. Only the most massive satellite, Rhea, has the potential to hold a thin oxygen atmosphere/exosphere. The masses of the other satellites are too small to retain gravitationally atmospheres in the presence of large thermal escape r…
Rotational Tomography For 3d Reconstruction Of The White-Light And Euv Corona In The Post-Soho Era
Frazin, Richard A.; Kamalabadi, Farzad
Improving our understanding of the mechanisms that energize the solar wind and heat structures in the solar corona requires the development of empirical methods that can determine the three-dimensional (3D) temperature and density distributions with as much spatial and temporal resolution as possible. This paper reviews the solar rotational tomogr…
Analysis of CO2 non-LTE emissions at 4.3µm in the Martian atmosphere as observed by PFS/Mars Express and SWS/ISO
López-Puertas, M.; López-Moreno, J. J.; Lellouch, E. +5 more
Daytime nadir spectra of the Martian atmosphere taken by the planetary Fourier spectrometer/Mars Express (PFS) and by the infrared space observatory (ISO) in the 4.3µm region are analyzed using a theoretical non-LTE model of the CO2 infrared emissions in that atmosphere. Averaged spectra from these instruments show a double peak s…
Models of Five Absorption-Line Systems along the Line of Sight Toward PG 0117+213
Charlton, Jane C.; Masiero, Joseph R.; Churchill, Christopher W. +2 more
We present our investigation into the physical conditions of the gas in five intervening quasar absorption-line systems along the line of sight toward the quasar PG 0117+213, with redshifts of z=0.57, 0.72, 1.04, 1.32, and 1.34. Photoionization modeling of Hubble Space Telescope, Keck I, and Palomar data, using the code Cloudy, is employed to deri…