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53 papers · 1 filter
The Atlas3D Project -- XI. Dense molecular gas properties of CO-luminous early-type galaxies
Alison Crocker, Melanie Krips, Martin Bureau +24
Surveying eighteen 12CO-bright galaxies from the ATLAS3D early-type galaxy sample with the Institut de Radio Astronomie Millimétrique (IRAM) 30m telescope, we detect 13CO(1-0) and…
An icy Kuiper-Belt around the young solar-type star HD 181327
J. Lebreton, J. -C. Augereau, W. -F. Thi +18
HD 181327 is a young F5/F6V star belonging to the Beta Pictoris moving group (12 Myr). It harbors an optically thin belt of circumstellar material at 90 AU. We aim to study the dus…
Spectral models of stellar populations resolved in chemical abundances
Philippe Prugniel, Mina Koleva
We present model spectra of stellar populations with variable chemical composition. We derived the [alpha/Fe] abundance ratio of the stars of the most important libraries (ELODIE,…
Backreaction in late-time cosmology
Thomas Buchert, Syksy Rasanen
We review the effect of the formation of nonlinear structures on the expansion rate, spatial curvature and light propagation in the universe, focusing on the possibility that it co…
Constraints on the MSSM from the Higgs Sector - A pMSSM Study of Higgs Searches, Bs -> mu+ mu- and Dark Matter Direct Detection
A. Arbey, M. Battaglia, F. Mahmoudi
We discuss the constraints on Supersymmetry in the Higgs sector arising from LHC searches, rare B decays and dark matter direct detection experiments. We show that constraints deri…
Feeding compact bulges and supermassive black holes with low angular-momentum cosmic gas at high redshift
Yohan Dubois, Christophe Pichon, Martin Haehnelt +4
We use cosmological hydrodynamical simulations to show that a significant fraction of the gas in high redshift rare massive halos falls nearly radially to their very centre on extr…