Publications (34)
Pulsed thermal emission from the accreting pulsar XMMU J054134.7-682550
A. Manousakis, R. Walter, M. Audard +1
Aims. Soft X-ray excesses have been detected in several Be/X-ray binaries and interpreted as the signature of hard X-ray reprocessing in the inner accretion disk. The system XMMU J…
An overview of the mid-infrared spectro-interferometer MATISSE: science, concept, and current status
A. Matter, B. Lopez, P. Antonelli +104
MATISSE is the second-generation mid-infrared spectrograph and imager for the Very Large Telescope Interferometer (VLTI) at Paranal. This new interferometric instrument will allow…
No breakdown of the radiatively-driven wind theory in low-metallicity environments
J. -C. Bouret, T. Lanz, D. J. Hillier +3
We present a spectroscopic analysis of HST/COS observations of three massive stars in the low metallicity dwarf galaxies IC 1613 and WLM. These stars, were previously observed with…
The hot horizontal-branch stars in omega Centauri
S. Moehler, S. Dreizler, T. Lanz +4
UV observations of some massive globular clusters have revealed a significant population of stars hotter and fainter than the hot end of the horizontal branch (HB), the so-called b…
UV Spectral Dating of Stars and Galaxies
S. R. Heap, T. M. Brown, I. Hubeny +17
An echelle spectrogram (R = 30,000) of the 2300-3100 A region in the ultraviolet spectrum of the F8V star 9 Comae is presented. The observation is used to calibrate features in the…
IRIS: A Generic Three-Dimensional Radiative Transfer Code
L. Ibgui, I. Hubeny, T. Lanz +1
We present IRIS, a new generic three-dimensional (3D) spectral radiative transfer code that generates synthetic spectra, or images. It can be used as a diagnostic tool for comparis…