Abstract:
We present the multiwavelength studies of the H II region Sh2-311 to explore the effects
of massive stars on low-mass star formation. In this study we have used optical (UBVI) data from
ESO 2.2m Wide Field Imager (WFI), Near-Infrared (NIR) (JHKѕ ) data from CTIO 4m Blanco
Telescope and archival Spitzer 8μm data. Based on stellar density contours and dust distribution we
have divided the complex into three regions i.e., Haffner 19 (H19), Haffner 18 (H18) and NGC
2467. Using the UBVI data we have estimated the basic parameters of these regions. We have
constructed the (J − H)/(H − Ks ) color-color diagram and a J/(J − H) color-magnitude diagram
to identify young stellar objects (YSOs) and to estimate their masses. Spatial distribution of the
YSOs indicates that most of them are distributed at the periphery of the H II region and ionizing
star may be responsible for the triggering of star formation at the periphery of the H II region.