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Determining star formation rates in AGN hosts from strong optical emission lines

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Author(s):
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de Mellos, Maite S. Z. ; Riffel, Rogemar A. ; Schimoia, Jaderson S. ; Rembold, Sandro B. ; Riffel, Rogerio ; Storchi-Bergmann, Thaisa ; Wylezalek, Dominika ; Ilha, Gabriele S. ; Alban, Marco ; Dors, Oli L. ; Gatto, Lara ; Krabbe, Angela C. ; Mallmann, Nicolas D. ; Trevisan, Marina
Total Authors: 14
Document type: Journal article
Source: Monthly Notices of the Royal Astronomical Society; v. 535, n. 1, p. 9-pg., 2024-10-26.
Abstract

The influence of Active Galactic Nuclei (AGN) on star formation within their host galaxies remains a topic of intense debate. One of the primary challenges in quantifying the star formation rate (SFR) within AGN hosts arises from the prevalent assumption in most methodologies, which attribute gas excitation to young stars alone. However, this assumption does not consider the contribution of the AGN to the ionization of the gas in their environment. To address this issue, we evaluate the use of strong optical emission lines to obtain the SFR surface density (Sigma SFRAGN) in regions predominantly ionized by an AGN, using a sample of 293 AGN hosts from the MaNGA survey, with SFR measurements available through stellar population fitting. We propose calibrations involving the H alpha and [OIII]lambda 5007 emission lines, which can be used to determine Sigma SFRAGN, resulting in values consistent with those estimated through stellar population fitting. (AU)

FAPESP's process: 20/16416-5 - Interacting galaxies: new catalog with data from the S-Plus survey and characterization of physical properties with data from the Survey MaNGA
Grantee:Angela Cristina Krabbe
Support Opportunities: Regular Research Grants
FAPESP's process: 24/02487-9 - Unveiling AGN Feedback Effects: Characterizing Ionized Outflows in Red Geysers and High-Redshift Quasars
Grantee:Gabriele da Silva Ilha
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 22/11799-9 - UNVEILING THE NATURE OF RED GEYSER GALAXIES
Grantee:Gabriele da Silva Ilha
Support Opportunities: Scholarships in Brazil - Post-Doctoral