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Lunar probe ready to bite the dust
Brumfiel, Geoff
SMART-1 prepares to go out with a bang.
HIPPARCOS Astrometric Observations of Symbiotic Stars
Badiali, M.; Cardini, D.; Emanuele, A. +1 more
The Hipparcos astrometric satellite has observed a number of symbiotic stars which are also known for being mapped at radio wavelengths. The radio emission generally arises from matter ejected by the binary system, which is made visible by the ionizing radiation of the system's hot component.
Hipparcos has provided the astrometric position (w…An atlas of solar events: 1996 2005
Auchère, F.; Artzner, G.; Delaboudinière, J. P. +1 more
Coronal mass ejections (CMEs) are observed in the plane of the sky in coronographic images. As the solar surface is masked by an occulting disk it is not clear whether halo CMEs are directed towards or away from the Earth. Observations of the solar corona on the solar disk by the extreme ultraviolet imaging telescope (EIT) on board the Solar Helio…
Gamma-ray bursts detected by INTEGRAL
McGlynn, S.; McBreen, S.; Foley, S. +5 more
Observation of Continuum Radiation Close to the Plasmapause: Evidence for Small Scale Sources
Grimald, S.; Canu, P.; Décréau, P. +1 more
We briefly present observations of nonthermal continuum (NTC) radiations obtained close to the sources at the plasmapause by the Whisper instruments on Cluster. The examples considered illustrate the variety of the characteristics of the NTC such as the overall bandwidth of the emissions. The omnipresent multiple narrow bandwidth components are fu…
XMM-Newton observation of a dust echo and X-ray flash in GRB 031203
Vaughan, S.; Watson, D.; O'Brien, P. T. +4 more
We present XMM-Newton observations of the X-ray afterglow of GRB 031203, approximately 6 h after the initial burst detection by Integral. At z = 0.105, GRB 031203 is one of the least luminous γ-ray bursts, with an equivalent isotropic γ-ray energy of ∼3 × 10 49 ergs. The XMM-Newton images reveal an expanding X-ray halo around GRB 031203…
Spectroscopic Properties of Cool Stars (SPOCS). I. 1040 F, G, and K Dwarfs from Keck, Lick, and AAT Planet Search Programs
Valenti, Jeff A.; Fischer, Debra A.
We present a uniform catalog of stellar properties for 1040 nearby F, G, and K stars that have been observed by the Keck, Lick, and AAT planet search programs. Fitting observed echelle spectra with synthetic spectra yielded effective temperature, surface gravity, metallicity, projected rotational velocity, and abundances of the elements Na, Si, Ti…
Supermassive Black Holes in Galactic Nuclei: Past, Present and Future Research
Ford, Holland; Ferrarese, Laura
This review discusses the current status of supermassive black hole research, as seen from a purely observational standpoint. Since the early ‘90s, rapid technological advances, most notably the launch of the Hubble Space Telescope, the commissioning of the VLBA and improvements in near-infrared speckle imaging techniques, have not only given us i…
Sulfates in Martian Layered Terrains: The OMEGA/Mars Express View
Le Mouélic, Stéphane; Gendrin, Aline; Mangold, Nicolas +8 more
The OMEGA/Mars Express hyperspectral imager identified hydrated sulfates on light-toned layered terrains on Mars. Outcrops in Valles Marineris, Margaritifer Sinus, and Terra Meridiani show evidence for kieserite, gypsum, and polyhydrated sulfates. This identification has its basis in vibrational absorptions between 1.3 and 2.5 micrometers. These m…
Mars Surface Diversity as Revealed by the OMEGA/Mars Express Observations
Sotin, Christophe; Fouchet, Thierry; Drossart, P. +39 more
The Observatoire pour la Minéralogie, l'Eau, les Glaces, et l'Activité (OMEGA) investigation, on board the European Space Agency Mars Express mission, is mapping the surface composition of Mars at a 0.3- to 5-kilometer resolution by means of visible-near-infrared hyperspectral reflectance imagery. The data acquired during the first 9 months of the…