3 papers
astro-ph2005
DDO 43: A Prototypical Dwarf Irregular Galaxy?
Caroline E. Simpson, Deidre A. Hunter, Tyler E. Nordgren
We present sensitive and high resolution 21 cm observations of the dwarf irregular (dIm) galaxy DDO 43, in conjunction with optical broad and narrow band images in U, B, V, and Hal…
astro-ph2004
DDO 88: A Galaxy-Sized Hole in the Interstellar Medium
Caroline E. Simpson, Deidre A. Hunter, Patricia M. Knezek
We present an HI and optical study of the gas-rich dwarf irregular galaxy DDO 88. Although DDO 88's global optical and HI parameters are normal for its morphological type, it hosts…
astro-ph2004
Neutral Hydrogen in Arp 158
Mansie G. Iyer, Caroline E. Simpson, Stephen T. Gottesman +1
We present 21 cm observations of Arp 158. We have performed a study of the neutral hydrogen (HI) to help us understand the overall formation and evolution of this system. This is a…