Search Publications
Near infra-red spectroscopy of the asteroid 21 Lutetia. II. Rotationally resolved spectroscopy of the surface
Colas, F.; Vernazza, P.; Binzel, R. P. +5 more
Aims:In the framework of the ground-based science campaign dedicated to the encounter with the Rosetta spacecraft, the mineralogy of the asteroid (21) Lutetia was investigated.
Methods: Near-infrared (NIR) spectra of the asteroid in the 0.8-2.5 µm spectral range were obtained with SpeX/IRTF in remote observing mode from Meudon, France in…
Dynamical masses of two young globular clusters in the blue compact galaxy ESO 338-IG04
Östlin, G.; Bergvall, N.; Cumming, R. J.
We present high-resolution échelle spectroscopy, obtained with the UVES spectrograph on ESO/VLT, of two luminous star clusters in the metal-poor blue compact galaxy ESO 338-IG04 at a distance of 37.5 Mpc. Cross-correlating with template stars, we obtain line-of-sight velocity dispersions of 33 and 17 km s-1. By combining with size estim…
X-rays from protostellar jets: emission from continuous flows
Orlando, S.; Bonito, R.; Peres, G. +2 more
Context: Recently X-ray emission from protostellar jets has been detected with both XMM-Newton and Chandra satellites, but the physical mechanism which can give rise to this emission is still unclear.
Aims: We performed an extensive exploration of the parameter space for the main parameters influencing the jet/ambient medium interaction. Aims …
A study of the β Cephei star γ Pegasi: binarity, magnetic field, rotation, and pulsations
Butkovskaya, V. V.; Plachinda, S. I.
Aims:We provide observational material to study the magnetic field variability of the classical
Methods: The observations were carried out in the He I 6678 line in the course of 23 observing nights from 1997 to 2005 with using the Coudé spectrograph in spectropolarimetric mode at the…
The surface brightness profile of the remote cluster NGC 2419
Bellazzini, M.
Context: It is well known that the bright and remote Galactic globular cluster NGC 2419 has a very peculiar structure. In particular its half-light radius is significantly larger than that of ordinary globular clusters of similar luminosity, being as large as that of the brightest nuclei of dwarf elliptical galaxies.
Aims: In this context it i…
Hinode observations reveal boundary layers of magnetic elements in the solar photosphere
Schmidt, W.; Lites, B. W.; Schlichenmaier, R. +3 more
Aims:We study the structure of the magnetic elements in network-cell interiors.
Methods: A quiet Sun area close to the disc centre was observed with the spectro-polarimeter of the Solar Optical Telescope on board the Hinode space mission, which yielded the best spatial resolution ever achieved in polarimetric data of the Fe I 630 nm line pair.…
On the relationship between coronal waves associated with a CME on 5 March 2000
Raouafi, N. -E.; Tripathi, D.
Aims:To study the relationship between coronal mass ejection (CME) associated waves.
Methods: Analysis of CME eruption observations on 5 Mar. 2000 recorded by the Large Angle Spectrometric Coronagraph (LASCO), the Ultraviolet Coronagraph Spectrometer (UVCS), and the Extreme-ultraviolet Imaging Telescope (EIT) on board the Solar and Heliospheri…
INTEGRAL and Swift observations of EXO 2030+375 during a giant outburst
Klochkov, D.; Santangelo, A.; Masetti, N. +11 more
Aims:We investigate the X-ray spectral and timing properties of the high mass X-ray binary
Methods: The data analyzed in this work are from partly simultaneous observations with INTEGRAL and Swift. The pulse period P and its temporal derivative do…
The XMM-Newton Optical Monitor survey of the Taurus molecular cloud
Audard, M.; Güdel, M.; Grosso, N. +4 more
Context: The Optical Monitor (OM) on-board XMM-Newton obtained optical/ultraviolet data for the XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST), simultaneously with the X-ray detectors.
Aims: With the XEST OM data, we study the optical and ultraviolet properties of TMC members, and to perform correlative studies between the X-r…
An X-ray look at the Seyfert 1 Galaxy Mrk 590: XMM-Newton and Chandra reveal complexity in circumnuclear gas
Bianchi, S.; Guainazzi, M.; Santos-Lleo, M. +4 more
Context: This paper reports on a partially simultaneous observation of the bright Seyfert 1 Galaxy Mrk 590, performed by XMM-Newton and Chandra.
Aims: The long exposure (~100 ks) allows us to investigate the Fe K complex at 6-7 keV and the presence of soft X-ray spectral features in great detail.
Methods: We have analysed XMM-Newton data f…