Abstract Details

Name: Rakesh Pandey
Affiliation: ARIES
Conference ID: ASI2020_187
Title : Stellar cores in the Sh 2-305 H II region
Authors and Co-Authors : Rakesh Pandey, Saurabh Sharma
Abstract Type : Oral
Abstract Category : Stars, ISM and Galaxy
Abstract : Using our deep optical and near-infrared photometry along with multiwavelength archival data we will present a detailed study of the Galactic H II region Sh 2-305, to understand the star/star-cluster formation. On the basis of excess infra-red emission we identified 116 young stellar objects (YSOs) around Sh 2-305. The density distribution of stellar sources along with minimal spanning tree calculations on the location of YSOs reveals at least three stellar sub-clusterings in Sh 2-305. The analysis of the infrared and ratio maps trace the photon dominant regions (PDRs) in the Sh 2-305 and two massive O-type stars (VM2 and VM4; ages ∼ 5 Myr) are located at the center of the Sh 2-305 H II region. Association of younger generation of stars with the PDRs is also investigated in the Sh 2-305. This result suggests that these two massive stars might have influenced the star formation history in the Sh 2-305. This argument is also supported with the calculation of various pressures driven by massive stars, slope of mass function/K-band luminosity function, star formation efficiency, fraction of Class I sources, and masses of dense cloud toward the sub-clusterings in the Sh 2-305.