A multiwavelength study of the star forming H II region Sh2-82
  Based on a multiwavelength study, the interstellar medium and young stellar
objects (YSOs) around the HII region Sh2-82 have been analyzed. Two molecular
clumps were found from the archival data of the Galactic Ring Survey, and using
the Two Micron All-Sky Survey catalog, we found two corresponding young
clusters embedded in the molecular clumps. The very good relations between CO
emission, infrared shells and YSOs suggest that it is probably a triggered star
formation region from the expansion of Sh2-82. We further used the data from
the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire from Spitzer to
study the YSOs within the two clumps, confirming star formation in this region.
By spectral energy distribution fits to each YSO candidate with infrared
excess, we derived the slope of the initial mass function. Finally, comparing
the HII region's dynamical age and the fragmentation time of the molecular
shell, we discard the "collect and collapse" process as being the triggering
mechanism for YSO formation. Sh2-82 can be a mixture of other processes such as
radiative-driven implosion and/or collisions with pre-existing clumps.
