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4 papers · 2 filters
Radiative Habitable Zones in Martian Polar Environments
C. Cordoba-Jabonero, M. -P. Zorzano, F. Selsis +2
The biologically damaging solar ultraviolet (UV) radiation (quantified by the DNA-weighted dose) reaches the Martian surface in extremely high levels. Searching for potentially hab…
The mass of the neutron star in SMC X-1
A. K. F. Val Baker, A. J. Norton, H. Quaintrell
We present new optical spectroscopy of the eclipsing binary pulsar Sk 160/SMC X-1. From the He I absorption lines, taking heating corrections into account, we determine the radial…
Nucleosynthetic signatures of the first stars
Anna Frebel, Wako Aoki, Norbert Christlieb +16
The chemically most primitive stars provide constraints on the nature of the first stellar objects that formed in the Universe; elements other than hydrogen, helium and traces of l…
Further Wolf-Rayet stars in the starburst cluster Westerlund 1
Ignacio Negueruela, J. Simon Clark
We present new low and intermediate-resolution spectroscopic observations of the Wolf Rayet (WR) star population in the massive starburst cluster Westerlund 1. Finding charts are p…