The expansion of H ii regions can trigger the formation of stars. An overdensity of young stellar objects is observed at the edges of H ii regions but the mechanisms that give rise to this phenomenon are not clearly identified. Moreover, it is difficult to establish a causal link between H ii -region expansion and the star formation observed at the edges of these regions. A clear age gradient observed in the spatial distribution of young sources in the surrounding might be a strong argument in favor of triggering.
Digital Commons Citation
Figueira, M.; Zavagno, A.; Deharveng, L.; and Anderson, L. D., "Star Formation Towards The Galactic H Ii Region Rcw 120 - Herschel Observations Of Compact Sources" (2017). Faculty & Staff Scholarship. 946.
Figueira, M., Zavagno, A., Deharveng, L., Anderson, L. D. (2017). Star Formation Towards The Galactic H Ii Region Rcw 120 - Herschel Observations Of Compact Sources. Astronomy and Astrophysics, 600, A93. http://doi.org/10.1051/0004-6361/201629379