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Constraint on a variation of the proton-to-electron mass ratio from H2 absorption towards quasar Q2348-011
Julija Bagdonaite, Michael T. Murphy, Lex Kaper +1
Molecular hydrogen (H2) absorption features observed in the line-of-sight to Q2348-011 at redshift zabs = 2.426 are analysed for the purpose of detecting a possible variation of th…
The Highly Energetic Expansion of SN2010bh Associated with GRB 100316D
Filomena Bufano, Elena Pian, Jesper Sollerman +50
We present the spectroscopic and photometric evolution of the nearby (z = 0.059) spectroscopically confirmed type Ic supernova, SN 2010bh, associated with the soft, long-duration g…
First firm spectral classification of an early-B pre-main-sequence star: B275 in M17
B. B. Ochsendorf, L. E. Ellerbroek, R. Chini +4
The optical to near-infrared (300 - 2500 nm) spectrum of the candidate massive Young Stellar Object (YSO) B275, embedded in the star forming region M17, has been observed with X-sh…
X-shooter, the new wide band intermediate resolution spectrograph at the ESO Very Large Telescope
Joel Vernet, H. Dekker, S. D'Odorico +87
X-shooter is the first 2nd generation instrument of the ESO Very Large Telescope(VLT). It is a very efficient, single-target, intermediate-resolution spectrograph that was installe…
On the Mass-Loss Rates of Massive Stars in the Low-Metallicity Galaxies IC 1613, WLM and NGC 3109
F. Tramper, H. Sana, A. de Koter +1
We present a spectroscopic analysis of VLT/X-Shooter observations of six O-type stars in the low-metallicity (Z ~ 1/7 Z\odot) galaxies IC 1613, WLM and NGC 3109. The stellar and wi…
Diffuse interstellar bands in Upper Scorpius: Probing variations in the DIB spectrum due to changing environmental conditions
D. A. I. Vos, N. L. J. Cox, L. Kaper +2
We study the effects of local environmental conditions affecting the diffuse interstellar band (DIB) carriers within the Upper Scorpius subgroup of the Sco OB2 association. We obta…