1.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- W. Schmutz3 profiles37 · h 44
- L. Harra34 · h 38
- D. Berghmans3 profiles19 · h 37
- A. Shapiro4 profiles17 · h 23
- Krzysztof Barczynski17 · h 12
- A. Zhukov3 profiles16 · h 33
- C. Verbeeck15 · h 17
- L. Teriaca13 · h 33
- S. Solanki3 profiles13 · h 78
- D. Long2 profiles12 · h 26
- M. Haberreiter12 · h 26
- E. Kraaikamp11 · h 14
- ETH ZurichCH71 papers
- Centre National de la Recherche ScientifiqueFR59 papers
- Max Planck Institute for Solar System ResearchDE42 papers
- Royal Observatory of BelgiumBE39 papers
- Institut d'Astrophysique SpatialeFR35 papers
- Université Paris-SaclayFR33 papers
- Lomonosov Moscow State UniversityRU24 papers
- University College LondonGB24 papers
- Goddard Space Flight CenterUS20 papers
- European Space Research and Technology CentreNL19 papers
- Southwest Research InstituteUS19 papers
- University of California, BerkeleyUS18 papers
14 papers · 1 filter
NLTE model calculations for the solar atmosphere with an iterative treatment of opacity distribution functions
M. Haberreiter, W. Schmutz, I. Hubeny
Modeling the variability of the solar spectral irradiance is a key factor for understanding the solar influence on the climate of the Earth. As a first step to calculating the sola…
POLAR Investigation of the Sun - POLARIS
T. Appourchaux, P. Liewer, M. Watt +34
The POLAR Investigation of the Sun (POLARIS) mission uses a combination of a gravity assist and solar sail propulsion to place a spacecraft in a 0.48 AU circular orbit around the S…
Solving the discrepancy between the seismic and photospheric solar radius
Margit Haberreiter, Alexander G. Kosovichev, Werner Schmutz
Two methods are used to observationally determine the solar radius: One is the observation of the intensity profile at the limb, the other one uses f-mode frequencies to derive a '…
XMM-Newton X-ray Observations of the Wolf-Rayet Binary System WR 147
S. L. Skinner, S. A. Zhekov, M. Guedel +1
We present results of a 20 ksec X-ray observation of the Wolf-Rayet (WR) binary system WR 147 obtained with XMM-Newton. Previous studies have shown that this system consists of a n…
Observations of Binary and Single Wolf-Rayet Stars with XMM-Newton and Chandra
S. Skinner, M. Guedel, W. Schmutz +1
We present an overview of recent X-ray observations of Wolf-Rayet (WR) stars with XMM-Newton and Chandra. A new XMM spectrum of the nearby WN8 + OB binary WR 147 shows hard absorbe…
A Spectroscopic Search for the non-nuclear Wolf-Rayet Population of the metal-rich spiral galaxy M83
Lucy Hadfield, Paul Crowther, Hans Schild +1
We present a catalogue of non-nuclear regions containing Wolf-Rayet stars in the metal-rich spiral galaxy M83 (NGC5236). From a total of 283 candidate regions identified using HeII…
Hydrodynamic model atmospheres for WR stars: Self-consistent modeling of a WC star wind
G. Gräfener, W. -R. Hamann
We present the first non-LTE atmosphere models for WR stars that incorporate a self-consistent solution of the hydrodynamic equations. The models account for iron-group line-blanke…
Wind clumping and the wind-wind collision zone in the Wolf-Rayet binary gamma Velorum
H. Schild, M. Guedel, R. Mewe +7
We present XMM-Newton observations of gamma^2 Velorum (WR 11, WC8+O7.5III, P = 78.53 d), a nearby Wolf-Ray binary system, at its X-ray high and low states. At high state, emission…
An exceptional population of late-type WC stars in the metal-rich spiral galaxy
Paul Crowther, Lucy Hadfield, Hans Schild +1
We have surveyed the metal-rich spiral galaxy M83 (NGC5236) for its Wolf-Rayet population using VLT-FORS2 narrow-band imaging and follow-up spectroscopy. From a total of 280 candid…
A large Wolf-Rayet population in NGC300 uncovered by VLT-FORS2
H. Schild, P. A. Crowther, J. B. Abbott +1
We have detected 58 Wolf-Rayet candidates in the central region of the nearby spiral galaxy NGC 300, based on deep VLT-FORS2 narrow-band imaging. Our survey is close to complete ex…
XMM-Newton and VLA Observations of the Variable Wolf-Rayet Star EZ CMa: Evidence for a Close Companion?
S. L. Skinner, S. A. Zhekov, M. Guedel +1
We present new X-ray and radio observations of the WR star EZ CMa (HD 50896) obtained with XMM-Newton and the VLA. This WN4 star shows optical/UV variability at a period of 3.76 d…
XMM-Newton Detection of Hard X-ray Emission in the Nitrogen-Type Wolf-Rayet Star WR110
S. L. Skinner, S. A. Zhekov, M. Guedel +1
We have used the excellent sensitivity of XMM-Newton to obtain the first high-quality X-ray spectrum of a Wolf-Rayet (WR) star which is not known to be a member of a binary system.…
2 um Narrow-band Adaptive Optics Imaging in the Arches Cluster
R. D. Blum, D. Schaerer, A. Pasquali +3
Canada-France-Hawaii-Telescope adaptive optics bonnette images through narrow-band filters in the band are presented for the Arches cluster. Continuum fluxes, line fluxes, and…
High resolution spectroscopy of symbiotic stars. VI. Orbital and stellar parameters for AR Pav
H. Schild, T. Dumm, U. Muerset +3
We present new dynamical parameters of the AR Pav binary system. Ourobservations consist of a series of high resolution optical/NIR spectra from which we derive the radial velocity…