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4 papers · 2 filters
On the time variability of the star formation efficiency
R. Feldmann, N. Y. Gnedin
A star formation efficiency per free fall time that evolves over the life time of giant molecular clouds (GMCs) may have important implications for models of supersonic turbulence…
The SEGUE Stellar Parameter Pipeline. IV. Validation with an Extended Sample of Galactic Globular and Open Clusters
Jason P Smolinski, Young Sun Lee, Timothy C Beers +7
Spectroscopic and photometric data for likely member stars of five Galactic globular clusters (M3, M53, M71, M92, and NGC 5053) and three open clusters (M35, NGC 2158, and NGC 6791…
Constraining Dark Matter in Galactic Substructure
Eric J. Baxter, Scott Dodelson, Savvas M. Koushiappas +1
Detecting the dark matter annihilation signal from Galactic substructure, or subhalos, is an important challenge for high-energy gamma-ray experiments. In this paper we discuss det…
Starry Messages: Searching for Signatures of Interstellar Archaeology
Richard A. Carrigan
Searching for signatures of cosmic-scale archaeological artifacts such as Dyson spheres or Kardashev civilizations is an interesting alternative to conventional SETI. Uncovering su…