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Influence of wall impacts on the Ulysses dust detector on understanding the interstellar dust flux
Krüger, H.; Grün, E.; Altobelli, N. +2 more
The Ulysses spacecraft orbits the Sun on a highly inclined orbit, and the impact ionization dust detector on board continuously measures interstellar dust grains with masses up to 10-13kg, penetrating deep into the Solar System. The flow direction is close to the mean apex of the Sun's motion through the local interstellar cloud (LIC), …
Wavelet analysis of magnetic turbulence in the Earth's plasma sheet
Balogh, A.; Zhang, T. L.; Nakamura, R. +4 more
Recent studies provide evidence for the multiscale nature of magnetic turbulence in the plasma sheet. Wavelet methods represent modern time series analysis techniques suitable for the description of statistical characteristics of multiscale turbulence. Cluster FGM (fluxgate magnetometer) magnetic field high-resolution (67 Hz) measurements are stud…
X-Ray Expanding Features Associated with a Moreton Wave
Shibata, Kazunari; Morimoto, Taro; Kurokawa, Hiroki +3 more
First Evidence of Circumstellar Disks around Blue Straggler Stars
De Marco, Orsola; Shara, Michael M.; Zurek, David +2 more
We present an analysis of optical Hubble Space Telescope Space Telescope Imaging Spectrograph and Faint Object Spectrograph spectroscopy of six blue stragglers found in the globular clusters M3, NGC 6752, and NGC 6397. These stars are a subsample of a set of ~50 blue stragglers and stars above the main-sequence turnoff in four globular clusters th…
XMM-Newton Observations of G32.45+0.1 and G38.55+0.0: Diffuse Hard X-Ray Sources Found by the ASCA Galactic Plane Survey
Ueno, Masaru; Yamaguchi, Hiroya; Koyama, Katsuji +2 more
We report on XMM-Newton observations of G32.45+0.1 and G38.55+0.0. These were discovered as diffuse hard X-ray sources by the ASCA Galactic Plane Survey, but the limited spatial resolution of ASCA could not conclude whether these are truly diffuse or a group of unresolved point-sources. XMM-Newton, with higher spatial resolution than ASCA, confirm…
W Hya: Molecular inventory by ISO-SWS
Waters, L. B. F. M.; Feuchtgruber, H.; Justtanont, K. +2 more
Infrared spectroscopy is a powerful tool to probe the inventory of solid state and molecular species in circumstellar ejecta. Here we analyse the infrared spectrum of the Asymptotic Giant Branch star W Hya, obtained by the Short and Long Wavelength Spectrometers on board of the Infrared Satellite Observatory. These spectra show evidence for the pr…
ISOCAM observations in the Lockman Hole . II. The 14.3 µm deep survey: Data reduction, catalogue and source counts
Elbaz, D.; Rodighiero, G.; Cesarsky, C. +3 more
We present a new analysis of the ISOCAM 14.3 µm deep survey in a 20 × 20 square arcmins area in the Lockman Hole. This survey is intermediate between the ultra-deep surveys and the shallow surveys in the ELAIS fields. The data have been analyzed with the method presented by Lari et al. (\cite{Lar01}). We have produced a catalogue of 283 sour…
Hydrogen in the atmosphere of the evolved WN3 Wolf-Rayet star WR 3: defying an evolutionary paradigm?
Crowther, P. A.; Morel, T.; Chené, A. -N. +6 more
WR 3 is the brightest very early-type WN star in the sky. Based on several years of time-resolved spectroscopy and precision photometry on various time-scales, we deduce that WR 3 is most likely a single, weak-lined star of type WN3ha (contrary to its current catalogue-type of WN3 + O4), with H lines occurring both in emission and absorption in it…
X-ray spectroscopy of the W UMa-type binary VW Cephei
Gondoin, P.
VW Cephei, a W UMa-type binary system, was observed twice with a four week interval in October 2002 by the XMM-Newton space observatory. During the first observation, the source appears to be quiescent. A shallow dip in the X-ray light curve during primary eclipse indicates that the primary and secondary stars both contribute to the X-ray emission…
Integral field spectroscopy of extended Lyα emission from the DLA galaxy in Q2233+131
Jahnke, K.; Popović, L. Č.; Christensen, L. +5 more
This paper presents observations of an extended Lyman-α emission nebula surrounding the galaxy responsible for the Damped Lyman-α Absorption (DLA) line in the spectrum of the quasar