Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-08-28
Astronomy and Astrophysics
Astrophysics
Appearing in the Handbook of Star Forming Regions, Vol. II, Bo Reipurth, ed
Scientific paper
The shape of the main arc formed by the Canis Major clouds has been suggested to result from a supernova explosion possibly triggering the recent star formation activity. The presence of dozens of OB stars and reflection nebulae forms the CMa OB1/R1 associations. More than a hundred emission line stars are found in this region, including the famous Z CMa, a binary system containing a Herbig Be star and a FUor companion. Several embedded infrared clusters with different ages are associated with the CMa clouds. The main characteristics of the region in terms of cloud structure, stellar content, age of associated young clusters, distance, and X-ray emission are presented in this chapter. Some of the arguments in favor and against the hypothesis of induced star formation are discussed in the last section.
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