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6 papers · 2 filters
Ultra-Deep Hubble Space Telescope Imaging of the Small Magellanic Cloud: The Initial Mass Function of Stars with M <~ 1 Msun
Jason S. Kalirai, Jay Anderson, Aaron Dotter +7
We present a new measurement of the stellar initial mass function (IMF) based on ultra-deep, high-resolution photometry of >5,000 stars in the outskirts of the Small Magellanic Clo…
High resolution reddening map in the direction of the stellar system Terzan 5
Davide Massari, Alessio Mucciarelli, Emanuele Dalessandro +7
We have used optical images acquired with the Hubble Space Telescope to construct the first high-resolution extinction map in the direction of Terzan 5, a peculiar stellar system i…
A New Model for the Milky Way Bar
Yougang Wang, Hongsheng Zhao, Shude Mao +1
We use Schwarzschild's orbit-superposition technique to construct self-consistent models of the Galactic bar. Using minimisation, we find that the best-fit Galactic bar model…
A super-Li rich turnoff star in NGC 6397 - the puzzle persists
Andreas Koch, Karin Lind, Ian B. Thompson +1
This presentation focuses on a recently discovered super-Li rich turnoff star in the old, metal poor globular cluster NGC 6397 (Koch et al. 2011, ApJL, 738, L29). Its unusually hig…
3-Dimensional Kinematics in low foreground extinction windows of the Galactic Bulge: Radial Velocities for 6 bulge fields
M. Soto, K. Kuijken, R. M. Rich
The detailed structure of the Galactic bulge still remain uncertain. The strong difficulties of obtaining observations of stars in the Galactic bulge have hindered the acquisition…
UV Properties of Galactic Globular Clusters with GALEX I. The Color-Magnitude Diagrams
Ricardo P. Schiavon, Emanuele Dalessandro, Sangmo T. Sohn +10
We present GALEX data for 44 Galactic globular clusters obtained during 3 GALEX observing cycles between 2004 and 2008. This is the largest homogeneous data set on the UV photometr…