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Modeling Formation of Globular Clusters: Beacons of Galactic Star Formation
Oleg Y. Gnedin
Modern hydrodynamic simulations of galaxy formation are able to predict accurately the rates and locations of the assembly of giant molecular clouds in early galaxies. These clouds…
A Galactic Center Origin for HE 0437-5439, the Hypervelocity Star near the Large Magellanic Cloud
Warren R. Brown, Jay Anderson, Oleg Y. Gnedin +4
We use Hubble Space Telescope imaging to measure the absolute proper motion of the hypervelocity star (HVS) HE 0437-5439, a short-lived B star located in the direction of the Large…
The Mass Profile of the Galaxy to 80 kpc
Oleg Y. Gnedin, Warren R. Brown, Margaret J. Geller +1
The Hypervelocity Star survey presents the currently largest sample of radial velocity measurements of halo stars out to 80 kpc. We apply spherical Jeans modeling to these data in…
Modeling the Metallicity Distribution of Globular Clusters
Alexander L. Muratov, Oleg Y. Gnedin
Observed metallicities of globular clusters reflect physical conditions in the interstellar medium of their high-redshift host galaxies. Globular cluster systems in most large gala…