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

Charlotte Ward; Michael J. Koss; Michael Eracleous; Benny Trakhtenbrot; Franz E. Bauer; Turgay Caglar; Fiona Harrison; Arghajit Jana; Darshan Kakkad; Macon Magno; Ignacio del Moral-Castro; Richard Mushotzky; Kyuseok Oh; Alessandro Peca; Meredith C. Powell; Claudio Ricci; Alejandra Rojas; Krista Lynne Smith; Daniel Stern; Ezequiel Treister; C. Megan Urry

doi:10.3847/1538-4357/adfa25

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

Charlotte Ward
, Michael J. Koss
, Michael Eracleous
, Benny Trakhtenbrot
, Franz E. Bauer
, Turgay Caglar
, Fiona Harrison
, Arghajit Jana
, Darshan Kakkad
, Macon Magno
, Ignacio del Moral-Castro
, Richard Mushotzky
, Kyuseok Oh
, Alessandro Peca
, Meredith C. Powell
, Claudio Ricci
, Alejandra Rojas
, Krista Lynne Smith
, Daniel Stern
, Ezequiel Treister

C. Megan Urry

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

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

Original language	English
Number of pages	19
Journal	The Astrophysical Journal
Volume	991
Issue number	1
Early online date	19 Sept 2025
DOIs	https://doi.org/10.3847/1538-4357/adfa25
Publication status	Published - 20 Sept 2025

Keywords

AGN host galaxies
Active galaxies
Supermassive black holes

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10.3847/1538-4357/adfa25Licence: CC BY

Final_Version
©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/.
Final published version, 3.7 MBLicence: CC BY

Cite this

Ward, C., Koss, M. J., Eracleous, M., Trakhtenbrot, B., Bauer, F. E., Caglar, T., Harrison, F., Jana, A., Kakkad, D., Magno, M., Moral-Castro, I. D., Mushotzky, R., Oh, K., Peca, A., Powell, M. C., Ricci, C., Rojas, A., Smith, K. L., Stern, D., ... Urry, C. M. (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). https://doi.org/10.3847/1538-4357/adfa25

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

abstract = "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",

keywords = "AGN host galaxies, Active galaxies, Supermassive black holes",

author = "Charlotte Ward and Koss, \{Michael J.\} and Michael Eracleous and Benny Trakhtenbrot and Bauer, \{Franz E.\} and Turgay Caglar and Fiona Harrison and Arghajit Jana and Darshan Kakkad and Macon Magno and Moral-Castro, \{Ignacio del\} and Richard Mushotzky and Kyuseok Oh and Alessandro Peca and Powell, \{Meredith C.\} and Claudio Ricci and Alejandra Rojas and Smith, \{Krista Lynne\} and Daniel Stern and Ezequiel Treister and Urry, \{C. Megan\}",

note = "{\textcopyright}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/.",

year = "2025",

month = sep,

day = "20",

doi = "10.3847/1538-4357/adfa25",

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Ward, C, Koss, MJ, Eracleous, M, Trakhtenbrot, B, Bauer, FE, Caglar, T, Harrison, F, Jana, A, Kakkad, D, Magno, M, Moral-Castro, ID, Mushotzky, R, Oh, K, Peca, A, Powell, MC, Ricci, C, Rojas, A, Smith, KL, Stern, D, Treister, E & Urry, CM 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, vol. 991, no. 1. https://doi.org/10.3847/1538-4357/adfa25

TY - JOUR

T1 - BASS. LII. The Prevalence of Double-peaked Broad Lines at Low Accretion Rates among Hard X-Ray Selected Active Galactic Nuclei

AU - Ward, Charlotte

AU - Koss, Michael J.

AU - Eracleous, Michael

AU - Trakhtenbrot, Benny

AU - Bauer, Franz E.

AU - Caglar, Turgay

AU - Harrison, Fiona

AU - Jana, Arghajit

AU - Kakkad, Darshan

AU - Magno, Macon

AU - Moral-Castro, Ignacio del

AU - Mushotzky, Richard

AU - Oh, Kyuseok

AU - Peca, Alessandro

AU - Powell, Meredith C.

AU - Ricci, Claudio

AU - Rojas, Alejandra

AU - Smith, Krista Lynne

AU - Stern, Daniel

AU - Treister, Ezequiel

AU - Urry, C. Megan

PY - 2025/9/20

Y1 - 2025/9/20

N2 - 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

AB - 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

KW - AGN host galaxies

KW - Active galaxies

KW - Supermassive black holes

U2 - 10.3847/1538-4357/adfa25

DO - 10.3847/1538-4357/adfa25

M3 - Article

SN - 0004-637X

VL - 991

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 1

ER -

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

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Keywords

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