BASS. LII. The Prevalence of Double-peaked Broad Lines at Low Accretion Rates among Hard X-Ray Selected Active Galactic Nuclei

Ward, Charlotte, Koss, Michael J., Eracleous, Michael, Trakhtenbrot, Benny, Bauer, Franz E., Caglar, Turgay, Harrison, Fiona, Jana, Arghajit, Kakkad, Darshan, Magno, Macon, Moral-Castro, Ignacio del, Mushotzky, Richard, Oh, Kyuseok, Peca, Alessandro, Powell, Meredith C., Ricci, Claudio, Rojas, Alejandra, Smith, Krista Lynne, Stern, Daniel, Treister, Ezequiel and Urry, C. Megan (2025) BASS. LII. The Prevalence of Double-peaked Broad Lines at Low Accretion Rates among Hard X-Ray Selected Active Galactic Nuclei. The Astrophysical Journal, 991 (1). ISSN 0004-637X

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A fraction of active galactic nuclei (AGN) have double-peaked Hα, Hβ, and Mg II broad lines attributed to emission from rotating gas in the accretion disk. Using optical spectroscopy of a flux-limited sample of AGN selected via ultrahard X-rays from the BAT AGN Spectroscopic Survey (BASS), we systematically identify 71 double-peaked emitters (DPEs) among 343 broad-line AGN with redshifts 0.004 < z < 0.297 and X-ray luminosities of 40

Item Type	Article
Identification Number	10.3847/1538-4357/adfa25
Additional information	©2025 The Author(s). This is an open access article distributed under the Creative Commons Attribution License, to view a copy of the license, see: https://creativecommons.org/licenses/by/4.0/.
Keywords	agn host galaxies, active galaxies, supermassive black holes
Date Deposited	27 Oct 2025 14:11
Last Modified	18 Feb 2026 20:58