77 citations · 533 across the 17 of their papers we have counts for
4 papers · 1 filter
Mass segregation in young compact star clusters in the Large Magellanic Cloud: I. Data and Luminosity Functions
R. de Grijs, R. A. Johnson, G. F. Gilmore +1
We have undertaken a detailed analysis of HST/WFPC2 and STIS imaging observations, and of supplementary wide-field ground-based observations obtained with the NTT of two young ~10-…
Constraints on Galaxy Formation from Stars in the Far Outer Disk of M31
Annette Ferguson, Rachel Johnson
Numerical simulations of galaxy formation within the cold dark matter (CDM) hierarchical clustering framework are unable to produce large disk galaxies without invoking some form o…
Stellar luminosity functions of rich star clusters in the Large Magellanic Cloud
B. Santiago, S. Beaulieu, R. Johnson +1
We show the results of deep V and I HST photometry of 6 rich star clusters in the Large Magellanic Cloud with different ages and metallicities. The number of stars with measured ma…
The Metal-rich Globular Cluster NGC6553: Observations with WFPC2, STIS, and NICMOS
Sylvie F. Beaulieu, Gerard Gilmore, Rebecca A. W. Elson +4
We present a HST study of the metal-rich globular cluster NGC6553 using WFPC2, NICMOS and STIS. Our primary motivation is to calibrate the STIS broad-band LP magnitude against $V_{…