Regina E Schulte-Ladbeck

Education

Research

I continue to be interested in the evolution of the chemical elements. My current research focuses on the chemical abundances in the interstellar medium of galaxies. The interstellar medium can be probed using emission–line diagnostics, when gas is photo–ionized by hot, massive stars in a galaxy. Another avenue to study the gas is by using absorption–line diagnostics, when a galaxy is fortuitously projected onto a bright, background Quasar. The Sloan Digital Sky Survey has aided my group in identifying such projections — view the image of this z=0.05 galaxy with a z=2 Quasar located to the north–west of the galaxy's starburst nucleus. Here, both diagnostics can be applied to analyze the interstellar matter.

Publications

• "Near-infrared spectral classification of symbiotic stars," Schulte-Ladbeck, A&A, 189, 97, 1988.
• "Evidence for a bipolar nebula around the peculiar B[e] star HD 45677 from ultraviolet spectropolarimetry," Schulte-Ladbeck et al., ApJ, 401, L105, 1992.
• "’Baade's Red Sheet’ Resolved into Stars with HST in the Blue Compact Dwarf Galaxy VII ZW 403," Schulte-Ladbeck, Crone & Hopp, ApJ, 493, L23, 1998.
• "The Oldest Stars of the Extremely Metal-Poor Local Group Dwarf Irregular Galaxy Leo A," Schulte-Ladbeck et al., AJ, 124, 896, 2002.
• "Emission-Line Spectroscopy of Damped Lyα Systems: The Case of SBS 1543+593/HS 1543+5921," Schulte-Ladbeck et al., ApJ, 625, L79, 2005.