Study of stellar population in the new extended star formation region associated with five IRAS sources

Abstract

We present the investigation results of structure and stellar content of a molecular cloud surrounding the five IRAS sources: 05168+3634, 05184+3635, 05177+3636, 05162+3639, and IRAS 05156+3643. Using multi-color criteria, we identified a rich population of embedded YSO candidates with infrared excess (Class 0/I and Class II) and their characteristics in a quite large molecular cloud which is located in the region of 24 arcmin radius. The molecular cloud includes 240 candidates of YSOs within the radii of sub-regions around 5 IRAS sources. The color-magnitude diagrams of the sub-regions suggest a very young stellar population. We construct the K luminosity function (KLF) of the sub-regions and according to the values of the slopes of KLFs, the age of the sub-regions can be estimated between 0.1-3 Myr. The SEDs are constructed for 45 Class I and 75 Class II evolutionary stages YSOs and the received parameters of those YSOs are well correlated with the results obtained by other methods.

Search and study of young infrared stellar clusters

“…For all regions a detailed study was conducted, which includes the following topics: 1) determination of the parameters of ISM, namely the distribution of N(H 2 ) hydrogen column density and T d dust temperature; 2) the search for young stellar clusters; 3) identification of the clusters' members using their infrared properties; 4) investigation of the structural properties of the young stellar clusters; 5) determination of the age and age spread of the clusters' members; 6) construction of the Luminosity Functions and Mass Functions for the clusters. This thesis is based on the papers Azatyan (2019), Azatyan & Nikoghosyan (2018), Azatyan et al (2016Azatyan et al ( , 2020Azatyan et al ( , 2022, Nikoghosyan & Azatyan (2014), Nikoghosyan et al (2020Nikoghosyan et al ( , 2021.…”