Search Publications
The mid-infrared extinction in molecular clouds. Case study of B 335
Olofsson, G.; Olofsson, S.
Aims: The purpose of the present investigation is to probe the dust properties inside a molecular cloud, in particular how particle growth and the presence of ice coatings may change the overall shape of the extinction curve.
Methods: Field stars behind a molecular cloud can be used to probe the cloud extinction for both the reddening an…
Highly absorbed X-ray binaries in the Small Magellanic Cloud
Pietsch, W.; Haberl, F.; Tiengo, A. +12 more
Many of the high mass X-ray binaries (HMXRBs) discovered in recent years in our Galaxy are characterized by a high absorption, most likely intrinsic to the system, that can impede their detection at the softest X-ray energies. Exploiting the good coverage obtained with sensitive XMM-Newton observations, we have undertaken a search for highly absor…
The rotation of Mimas
Noyelles, B.; Rambaux, N.; Karatekin, Ö.
Context. The Cassini mission in the Saturnian system is an outstanding opportunity to improve our knowledge of the satellites of Saturn. The data obtained thanks to this mission must be balanced with theoretical models.
Aims: This paper aims at modelling the rotation of Mimas with respect to its possible internal structure.
Methods: We f…
Diagnostics of electron beam properties from the simultaneous hard X-ray and microwave emission in the 2001 March 10 flare
Zharkova, V. V.; Kuznetsov, A. A.; Kashapova, L. K. +2 more
Context. Microwave (MW) and hard X-ray (HXR) data are thought to be powerful means of investigating the mechanisms of particle acceleration and precipitation in solar flares, reflecting different aspects of electron interaction with ambient particles in the presence of a magnetic field. Simultaneous simulation of HXR and MW emission with the same …
About the relative importance of compressional heating and current dissipation for the formation of coronal X-ray bright points
Otto, A.; Büchner, J.; Santos, J. C. +1 more
Context. The solar corona is heated to high temperatures of the order of 106 K. The coronal energy budget and specifically possible mechanisms of coronal heating (wave, DC-electric fields, etc.) are poorly understood. This is particularly true for the formation of X-ray bright points (BPs) is concerned.
Aims: We aim to investigate …
Large-amplitude photometric variability of the candidate protoplanet TMR-1C
Martín, E. L.; Riaz, B.
Context. TMR-1C is a candidate protoplanet that lies at a separation of about 10” (~1000 AU) from the Class I protobinary TMR-1 (IRAS 04361+2547) located in the Taurus molecular cloud. A narrow filament-like structure was observed in the discovery HST/NICMOS images, extending southeast from the central proto-binary system towards TMR-1C, suggestin…
Statistical techniques for the detection and analysis of solar explosive events
Sarro, L. M.; Berihuete, A.
Context. Solar explosive events are commonly explained as small-scale magnetic reconnection events, although an unambiguous confirmation of this scenario remains elusive owing to the lack of spatial resolution and the statistical analysis of sufficiently large samples of this type of events.
Aims: We propose a sound statistical treatment of d…
V456 Ophiuchi and V490 Cygni: Systems with the shortest apsidal-motion periods
Wolf, M.; Zasche, P.
Our main aim is the first detailed analysis of the two eclipsing binaries V456 Oph and V490 Cyg. The system V456 Oph has been studied both photometrically via an analysis of its light curve observed by the INTEGRAL/OMC and by the period analysis of all available times of minima. V490 Cyg has been studied by means of a period analysis only. Many ne…
The Hubble Legacy Archive ACS grism data
Walsh, J. R.; Rosati, P.; Kümmel, M. +8 more
A public release of slitless spectra, obtained with ACS/WFC and the G800L grism, is presented. Spectra were automatically extracted in a uniform way from 153 archival fields (or "associations") distributed across the two Galactic caps, covering all observations to 2008. The ACS G800L grism provides a wavelength range of 0.55-1.00 µm, with a …
Kernel spectral clustering of time series in the CoRoT exoplanet database
Debosscher, J.; Varón, C.; Alzate, C. +1 more
Context. Detection of contaminated light curves and irregular variables has become a challenge when studying variable stars in large photometric surveys such as that produced by the CoRoT mission.
Aims: Our goal is to characterize and cluster the light curves of the first four runs of CoRoT, in order to find the stars that cannot be classifie…