Karl R. Stapelfeldt, John E. Krist, Jkrme Bouvier, Deborah L. Padgett, Christopher J. Burrows
Hubble Space Telescope images of HK Tauri reveal that the companion star in this 2.4 ” (340 AU) pre-main sequence binary system is an entirely nebulous object at visual wavelengths. HK Tau/c...
Michael A. Pahre, Jeremy R. Mould, Alan Dressler, Jon A. Holtzman, Alan M. Watson, ...
9, David Crisp 12, Richard E. Griffiths 11, Carl J. Grillmair 13, J. Jeff Hester 14
Detection of the Tip of Red Giant Branc in NGC 5128 (2004)
Soria, Roberto, Mould, Jeremy R., Watson, Alan M., Gallagher, John S. III, Ballester, Gilda E., Burrows, Christopher J., ...
We present a color-magnitude diagram of more than 10,000 stars in the halo of galaxy NGC 5128 (Centaurus A), based on WFPC2 images through the V and I filters. The position of the red-giant branch...
Stellar Populations at the Center of IC 1613 (1999)
Cole, Andrew A., Tolstoy, Eline, Gallagher, John S., Hoessel, John G., Mould, Jeremy R., Holtzman, Jon A., ...
We have observed the center of the Local Group dwarf irregular galaxy IC 1613 with WFPC2 aboard the Hubble Space Telescope in the F439W, F555W, and F814W filters. We find a dominant old stellar...
WFPC2 Observations of Compact Star Cluster Nuclei in Low Luminosity Spiral Galaxies (1999)
Matthews, Lynn D., Gallagher, John S., Krist, John E., Watson, Alan M., Burrows, Christopher J., ...
We have used the Wide Field Planetary Camera 2 aboard the Hubble Space Telescope to image the compact star cluster nuclei of the nearby, late-type, low-luminosity spiral galaxies NGC 4395, NGC 4242,...