566 citations
- Australian National UniversityAU2 papers
- Applied Mathematics (United States)US1 paper
- Canada–France–Hawaii TelescopeUS1 paper
- Centre National de la Recherche ScientifiqueFR1 paper
- Columbia UniversityUS1 paper
- European Southern ObservatoryCL1 paper
- Hamburger Fern-HochschuleDE1 paper
- Hokkaido UniversityJP1 paper
- Icahn School of Medicine at Mount SinaiUS1 paper
- Joint Institute for Nuclear AstrophysicsUS1 paper
- Kavli Institute for Particle Astrophysics and CosmologyUS1 paper
- Leiden Observatory1 paper
5 papers · 1 filter
MACHOs in M31? Absence of evidence but not evidence of absence
Jelte T. A. de Jong, Lawrence M. Widrow, Patrick Cseresnjes +9
We present results of a microlensing survey toward the Andromeda Galaxy (M31) carried out during four observing seasons at the Isaac Newton Telescope (INT). This survey is part of…
Discovery of a high-redshift Einstein ring
R. A. Cabanac, D. Valls-Gabaud, A. O. Jaunsen +2
We report the discovery of a partial Einstein ring of radius 1.48arcsec produced by a massive (and seemingly isolated) elliptical galaxy. The spectroscopic follow-up at the VLT rev…
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…
Scaling Laws for Dark Matter Halos in Late-Type and Dwarf Spheroidal Galaxies
John Kormendy, K. C. Freeman
Maximum disk mass models fitted to galaxy rotation curves are used to show that dark matter (DM) halos in late-type and dwarf spheroidal (dSph) galaxies satisfy well defined scalin…
Galaxy dynamics with the Planetary Nebula Spectrograph
N. R. Napolitano, A. J. Romanowsky, N. G. Douglas +6
The Planetary Nebula Spectrograph is a dedicated instrument for measuring radial velocity of individual Planetary Nebulae (PNe) in galaxies. This new instrument is providing crucia…