Star Formation Properties in Barred Galaxies (SFB). II. NGC 2903 and NGC 7080

TL;DR

This study investigates star formation in two barred galaxies, NGC 2903 and NGC 7080, revealing that bulge regions have the highest star formation rates and that bar-driven evolution influences their development.

Contribution

It provides a detailed multi-wavelength analysis of star formation in barred galaxies, highlighting the role of bulges and bars in galaxy evolution.

Findings

Bulge regions have the highest star formation rate surface densities.

Star formation activity is more intense in NGC 2903's bar than in NGC 7080.

Discussion of evolutionary stages based on bar-driven secular evolution models.

Abstract

Stellar bars are important for the secular evolution of disk galaxies because they can drive gas into the galactic central regions. To investigate the star formation properties in barred galaxies, we presented a multi-wavelength study of two barred galaxies NGC 2903 and NGC 7080. We performed the three-component bulge-disk-bar decomposition using the 3.6 {\mu}m images, and identified the bulges in the two galaxies as pseudobulges. Based on the narrowband H{\alpha} images, the star formation clumps were identified and analyzed. the clumps in the bulge regions have the highest star formation rate surface densities in both galaxies, while the star formation activities in the bar of NGC 2903 are more intense than those in the bar of NGC 7080. Finally, we compared with the scenario of bar-driven secular evolution in previous studies, and discussed the possible evolutionary stages of the two galaxies.