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41 papers
A Massive Pulsar in a Compact Relativistic Binary
John Antoniadis, Paulo C. C. Freire, Norbert Wex +19
Many physically motivated extensions to general relativity (GR) predict significant deviations in the properties of spacetime surrounding massive neutron stars. We report the measu…
Revealing the inner circumstellar disk of the T Tauri star S CrA N using the VLTI
J. Vural, A. Kreplin, S. Kraus +7
Aims: We investigate the structure of the circumstellar disk of the T Tauri star S CrA N and test whether the observations agree with the standard picture proposed for Herbig Ae st…
Near-infrared spectro-interferometry of three OH/IR Stars with the VLTI/AMBER instrument
A. E. Ruiz-Velasco, M. Wittkowski, A. Wachter +2
We investigate the molecular and dusty environment of OH/IR stars in order to characterize the mass-loss process during the tip-AGB superwind phase. Employing the AMBER instrument…
Imaging the dynamical atmosphere of the red supergiant Betelgeuse in the CO first overtone lines with VLTI/AMBER
K. Ohnaka, G. Weigelt, F. Millour +6
We present the first 1-D aperture synthesis imaging of the red supergiant Betelgeuse in the individual CO first overtone lines with VLTI/AMBER. The reconstructed 1-D projection ima…
VLTI/AMBER spectro-interferometry of the Herbig Be star MWC 297 with spectral resolution 12 000
G. Weigelt, V. P. Grinin, J. H. Groh +12
Circumstellar disks and outflows play a fundamental role in star formation. Infrared spectro-interferometry allows the inner accretion-ejection region to be resolved. We measured i…
Imaging "Pinwheel"nebulae with optical long-baseline interferometry
Florentin Millour, Thomas Driebe, José Groh +4
Dusty Wolf-Rayet stars are few but remarkable in terms of dust production rates (up to one millionth of solar mass per year). Infrared excesses associated to mass-loss are found in…