4 papers · 1 filter
The Recent Evolution of the Dwarf Starburst Galaxy NGC 625 from Hubble Space Telescope Imaging
John M. Cannon, Robbie C. Dohm-Palmer, Evan D. Skillman +3
New HST/WFPC2 imaging of the dwarf starburst galaxy NGC 625 is presented. These data, 80% complete to V and I magnitudes of 26.0 and 25.3, respectively, allow us to study the recen…
Deep Hubble Space Telescope Imaging of IC 1613 II. The Star Formation History
Evan D. Skillman, Eline Tolstoy, Andrew A. Cole +5
We present deep HST WFPC2 imaging of the Local Group dwarf irregular galaxy IC 1613. The photometry is the deepest to date for an isolated dwarf irregular galaxy. The resulting col…
Deep HST Imaging of Sextans A. III. The Star Formation History
Andrew E. Dolphin, A. Saha, Evan D. Skillman +6
We present a measurement of the star formation history of Sextans A, based on WFPC2 photometry that is 50% complete to V=27.5 (M_V ~+ 1.9) and I=27.0. The star formation history an…
Deep HST Imaging of Sextans A. II. Cepheids and Distance
Andrew E. Dolphin, A. Saha, Evan D. Skillman +6
We have identified 82 short-period variable stars in Sextans A from deep WFPC2 observations. All of the periodic variables appear to be short-period Cepheids, with periods as small…