Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003csss...12..799k&link_type=abstract
The Future of Cool-Star Astrophysics: 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (2001 July 30 - August
Astronomy and Astrophysics
Astrophysics
2
Ζ Pup, Γ2 Vel, Pre-Main Sequence Stars, Cometary Globules
Scientific paper
High mass stars can terminate low mass star formation (LMSF), but can also trigger it. The Gum Nebula is an excellent site to study how high mass stars influence LMSF. The nebula contains SNRs, OB stars, and cometary globules (CGs). We present multi-wavelength photometric studies of selected regions in CG30/31/38 and optical photometry on CG4/6/SA101. We identify loci of likely pre-main sequence (PMS) stars as well as near-IR excess sources from their color-magnitude and color-color diagrams. CG4/6/SA101 is near γ2 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. We find two parallel loci of candidate PMS stars in which older ones may have disks while younger ones (≤2Myr) may not. This region has probably been influenced by ζ Pup and/or the progenitor of Vela SNR.
Kim Jinyoung Serena
Walter Fred M.
Wolk Scott J.
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