A Catalog of Broad Hα and Hβ Active Galactic Nuclei in MaNGA

Broad H α and H β emission lines (FWHM > 1000 km s −1 ) are incredibly efficient tracers of the high-velocity clouds encircling active galactic nuclei (AGNs). As a result, we search for these broad-line AGN in the Sloan Digital Sky Survey’s Mapping Nearby Galaxies at Apache Point Observatory (MaN...

Full description

Saved in:
Bibliographic Details
Published in:The Astrophysical journal 2024-08, Vol.971 (1), p.92
Main Authors: Negus, James, Comerford, Julia M., Müller Sánchez, Francisco
Format: Article
Language:English
Subjects:
Active galactic nuclei
Digital mapping
Emission
Emission lines
Galaxies
Galaxy mergers & collisions
H alpha line
Sky surveys (astronomy)
Stars & galaxies
Tracers
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Broad H α and H β emission lines (FWHM > 1000 km s −1 ) are incredibly efficient tracers of the high-velocity clouds encircling active galactic nuclei (AGNs). As a result, we search for these broad-line AGN in the Sloan Digital Sky Survey’s Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) catalog. We identify 301 broad-line H α galaxies and 801 broad-line H β galaxies in the catalog. In total, we detect 1042 unique broad-line galaxies with luminosities between 10 37 and 10 43 erg s −1 ; 60 feature both broad H α and broad H β emission. We also determine that the broad-line region radius ranges between 0.01 and 46 lt-days, with a median radius of 0.1 lt-days (0.02 pc) for our broad H β sample. In addition, we find that both samples feature a higher fraction of galaxy mergers (44% for the broad H α sample and 43% for the broad H β sample), compared to the full MaNGA galaxy sample (26%), which suggests that merger-driven fueling is strongly active in our sample.
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/ad4c68