19 citations · 44 across the 4 of their papers we have counts for
6 papers
Eight years of TIGRE robotic spectroscopy: Operational experience and selected scientific results
J. N. González-Perez, M. Mittag, J. H. M. M. Schmitt +4
TIGRE (Telescopio Internacional de Guanajuato Robótico Espectroscópico) has been operating in fully robotic mode in the Observatory La Luz (Guanajuato, Mexico) since the end of 201…
Carrington cycle 24: The solar chromospheric emission in a historical and stellar perspective
K. -P. Schroder, M. Mittag, J. H. M. M. Schmitt +3
We present the solar S-index record of cycle 24, obtained by the TIGRE robotic telescope facility and its high-resolution spectrograph HEROS (R20,000), which measures the…
Integral field observations of the blue compact galaxy Haro14. Star formation and feedback in dwarf galaxies
L. M. Cairós, J. N. González-Pérez
(Abridged) Low-luminosity, gas-rich blue compact galaxies (BCG) are ideal laboratories to investigate many aspects of the star formation in galaxies. We study the morphology, stell…
Time series of high resolution spectra of SN 2014J observed with the TIGRE telescope
D. Jack, M. Mittag, K. -P. Schroder +6
We present a time series of high resolution spectra of the Type Ia supernova 2014J, which exploded in the nearby galaxy M82. The spectra were obtained with the HEROS echelle spectr…
Simultaneous X-ray and optical spectroscopy of the Oef supergiant lambda Cep
G. Rauw, A. Herve, Y. Naze +8
Probing the structures of stellar winds is of prime importance for the understanding of massive stars. Based on their optical spectral morphology and variability, the stars of the…
Spectroscopic variability of two Oe stars
G. Rauw, T. Morel, Y. Naze +28
The Oe stars HD45314 and HD60848 have recently been found to exhibit very different X-ray properties: whilst HD60848 has an X-ray spectrum and emission level typical of most OB sta…