A Caltech Library Service

High-ionization mid-infrared lines as black hole mass and bolometric luminosity indicators in active galactic nuclei

Dasyra, K. M. and Ho, L. C. and Armus, L. and Ogle, P. and Helou, G. and Peterson, B. M. and Lutz, D. and Netzer, H. and Sturm, E. (2008) High-ionization mid-infrared lines as black hole mass and bolometric luminosity indicators in active galactic nuclei. Astrophysical Journal Letters, 674 (1). L9-L12. ISSN 2041-8205. doi:10.1086/528843.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


We present relations of the black hole mass and the optical luminosity with the velocity dispersion and the luminosity of the [Ne v] and the [O iv] high-ionization lines in the mid-infrared (MIR) for 28 reverberation-mapped active galactic nuclei. We used high-resolution Spitzer Infrared Spectrograph and Infrared Space Observatory Short Wavelength Spectrometer data to fit the profiles of these MIR emission lines that originate from the narrow-line region of the nucleus. We find that the lines are often resolved and that the velocity dispersion of [Ne v] and [O iv] follows a relation similar to that between the black hole mass and the bulge stellar velocity dispersion found for local galaxies. The luminosity of the [Ne v] and the [O iv] lines in these sources is correlated with that of the optical 5100 continuum and with the black hole mass. Our results provide a means to derive °A black hole properties in various types of active galactic nuclei, including highly obscured systems.

Item Type:Article
Related URLs:
URLURL TypeDescription
Ho, L. C.0000-0001-6947-5846
Armus, L.0000-0003-3498-2973
Ogle, P.0000-0002-3471-981X
Helou, G.0000-0003-3367-3415
Lutz, D.0000-0003-0291-9582
Additional Information:© 2008. The American Astronomical Society. Received 2007 October 26; accepted 2007 December 19; published 2008 January 22. This work was based on observations made with the Spitzer Space Telescope and was supported by NASA through an award issued by JPL/Caltech.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Subject Keywords:galaxies: active—galaxies: kinematics and dynamics—galaxies: nuclei—galaxies: Seyfert—infrared: galaxies—quasars: emission lines
Issue or Number:1
Record Number:CaltechAUTHORS:20090526-101228585
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:14298
Deposited By: Ruth Sustaita
Deposited On:27 May 2009 17:03
Last Modified:08 Nov 2021 23:10

Repository Staff Only: item control page