Parameters of Star Formation Regions in Galaxies NGC 3963 and NGC 7292

TL;DR

This study analyzes the physical parameters of star formation regions in galaxies NGC 3963 and NGC 7292 using photometric and spectroscopic data, revealing age correlations with H-alpha emission and contributing to a comprehensive catalog.

Contribution

It introduces a method for estimating stellar population parameters in peculiar galaxies and expands a catalog with new data on star formation regions.

Findings

HII regions are younger than 6-8 Myr.

Regions without gas emission are older.

The study provides estimates for 16 stellar populations and 15 ages.

Abstract

Results of a study of physical parameters of stellar population in star formation regions in galaxies with signs of peculiarity NGC 3963 and NGC 7292 are presented. The study was carried out based on the analysis of photometric (UBVRI bands), H-alpha and spectroscopic data obtained by the authors, using evolutionary models of stellar population. Among 157 star formation regions identified in galaxies, the young stellar population mass estimates were obtained for 16 of them and the age estimates were obtained for 15. The age of star formation regions clearly correlates with the presence of emission in the H-alpha line: HII regions in the galaxies are younger than 6-8 Myr, and the regions without gas emission are older. The studied objects are included in the version 3 of our catalogue of photometric, physical and chemical parameters of star formation regions, which includes 1667 objects in 21 galaxies. Key aspects of the technique used to estimate the physical parameters and different relations between observational and physical parameters of the young stellar population in star formation regions are discussed.