Extent of Triggered Star Formation in the Bolocam Galactic Plane Survey
Thomas Robitaille, Claudia Cyganowski, Hector Arce
We explore whether triggered star formation is a dominant mode of star formation throughout the Milky Way by comparing the Spitzer GLIMPSE bubble catalogs with the Bolocam Galactic Plane Survey (BGPS). The BGPS has identified 8358 high column density sources throughout the northern Galactic plane, which represent the material closely related to star formation. We have found that only a small fraction of BGPS sources are coincident with the GLIMPSE bubble edges, suggesting that triggering is not the dominant mode of star formation in the Galaxy. We further explore how many BGPS sources located on bubble edges exhibit signs of star formation as indicated by coincidence with mid-IR sources, and whether there is a statistically significant difference in star formation activity in these sources compared to BGPS sources not associated with bubbles. We also compare physical properties of BGPS sources both on and off bubbles for which we have ammonia data and kinematic distances.