Bass Lii: Clues from Twin Peaks -- Investigating the structure of the AGN broad-line region at low accretion rates with double-peaked emitters

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

Bass Lii: Clues from Twin Peaks -- Investigating the structure of the AGN broad-line region at low accretion rates with double-peaked emitters

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

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Abstract

A fraction of active galactic nuclei (AGN) have double-peaked H$\alpha$, H$\beta$ 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 amongst 343 broad-line AGN with redshifts $0.004

Original language	English
Journal	The Astrophysical Journal
Publication status	Submitted - 7 Jul 2025

Keywords

astro-ph.GA
astro-ph.HE

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2507.05380v1

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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: Clues from Twin Peaks -- Investigating the structure of the AGN broad-line region at low accretion rates with double-peaked emitters. Manuscript submitted for publication.

@article{017f3e4c16184537936669059ab5070a,

title = "Bass Lii: Clues from Twin Peaks -- Investigating the structure of the AGN broad-line region at low accretion rates with double-peaked emitters",

abstract = "A fraction of active galactic nuclei (AGN) have double-peaked H\$\textbackslash{}alpha\$, H\$\textbackslash{}beta\$ 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 amongst 343 broad-line AGN with redshifts \$0.004",

keywords = "astro-ph.GA, astro-ph.HE",

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 = "23 pages, 12 figures, 4 tables. Submitted to ApJ. Comments welcome!",

year = "2025",

month = jul,

day = "7",

language = "English",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

}

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: Clues from Twin Peaks -- Investigating the structure of the AGN broad-line region at low accretion rates with double-peaked emitters', The Astrophysical Journal.

TY - JOUR

T1 - Bass Lii: Clues from Twin Peaks -- Investigating the structure of the AGN broad-line region at low accretion rates with double-peaked emitters

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

N1 - 23 pages, 12 figures, 4 tables. Submitted to ApJ. Comments welcome!

PY - 2025/7/7

Y1 - 2025/7/7

N2 - A fraction of active galactic nuclei (AGN) have double-peaked H$\alpha$, H$\beta$ 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 amongst 343 broad-line AGN with redshifts $0.004

AB - A fraction of active galactic nuclei (AGN) have double-peaked H$\alpha$, H$\beta$ 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 amongst 343 broad-line AGN with redshifts $0.004

KW - astro-ph.GA

KW - astro-ph.HE

M3 - Article

SN - 0004-637X

JO - The Astrophysical Journal

JF - The Astrophysical Journal

ER -

Bass Lii: Clues from Twin Peaks -- Investigating the structure of the AGN broad-line region at low accretion rates with double-peaked emitters

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Keywords

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