Kim, Jinyoung Serena

Contact Email: serena@mail.ess.sunysb.edu
Institute: Dept. of Physics and Astronomy
State University of New York at Stony Brook
First Coauthor: Dr. Frederick M. Walter
Institute: SUNY at Stony Brook
Second Coauthor: Dr. Scott J. Wolk
Institute: Harvard-Smithsonian Center for Astrophysics
Presenting Thesis: Yes
Subject Area: Star Formation, Very Young Stars, T-Tauri, H-H Objects
Waveband: Multi-wavelength
Technique: Photometry
Presentation: Poster Display
Title: Triggered Low Mass Star Formation in the Gum Nebula: CG30/31/38 and CG4/6/SA101
Abstract: High mass stars can terminate low mass star formation (LMSF). However the strong UV radiation, winds, and shocks can also trigger LMSF by collapsing the denser cores of evaporating molecular clouds. Cometary globules (CGs) are these clouds with head-tail geometry, often seen in HII regions in association with young stars. The Gum Nebula is an excellent site to study how high mass stars influence LMSF. The nebula contains SNRs, a large number of OB stars and CGs. We present multi-wavelength photometric studies of selected regions in CG30/31/38 and CG4/6/SA101. We present color-magnitude and color-color diagrams, and identify a locus of likely pre-main sequence stars. CG4/6/SA101 is near $\gamma^2$ Vel and Vela OB2, which may have influenced its LMSF. The X-ray sources around CG30/31/38 outline the heads of the CGs pointing toward central ionizing sources. This region may have been influenced by $\zeta$Pup. We discuss the role these data may play in elucidating the history of triggered LMSF in the Gum Nebula.