Academia Sinica Logo

Circumnuclear structures and environments of nearby Seyfert galaxies with visualization of CARTA

Abstract

We present NOEMA CO(2-1) observation of nearby Seyfert galaxy NGC 3079, which exhibits both AGN activity and active star formation (SF). By subtracting the best-fitted thick disk component generated by DYSMALPY, we reveal the complex nuclear structures. Furthermore, we visualize the distribution of cold molecular gas (from archive ALMA) and PAH features (from archive JWST) in NGC 7469, another Seyfert galaxy that displays both AGN and SF activities. By extracting spectra from different regions, we discuss the physical properties of the circumnuclear environments. The above studies are conducted with CARTA (Cube Analysis and Rendering Tool for Astronomy) that can enhance the efficiency of analyzing 3D image data. Then, I will briefly show the current CARTA development structure and automatically quality assurance (QA) testing strategy.