NTRS - NASA Technical Reports Server

Back to Results
The Geometry of the Infrared and X-Ray Obscurer in a Dusty Hyperluminous QuasarWe study the geometry of the active galactic nucleus (AGN) obscurer in IRAS 09104+4109, an IR-luminous, radio-intermediate FR-I source at z = 0.442, using infrared data from Spitzer and Herschel, X-ray data from NuSTAR, Swift, Suzaku, and Chandra, and an optical spectrum from Palomar. The infrared data imply a total rest-frame 1-1000 micron luminosity of 5.5 × 10(exp 46) ergs/s and require both an AGN torus and a starburst model. The AGN torus has an anisotropy-corrected IR luminosity of 4.9 × 10(exp 46) ergs/s and a viewing angle and half-opening angle both of approximately 36deg from pole-on. The starburst has a star formation rate of (110 +/- 34) Stellar Mass/yr and an age of <50 Myr. These results are consistent with two epochs of luminous activity in IRAS 09104+4109: one approximately 150 Myr ago, and one ongoing. The X-ray data suggest a photon index of Gamma approx. =l 1.8 and a line-of-sight column density of N(sub H) approx. = 5 × 10(exp 23) sq cm. This argues against a reflection-dominated hard X-ray spectrum, which would have implied a much higher N(sub H) and luminosity. The X-ray and infrared data are consistent with a bolometric AGN luminosity of L(sub bol) approx.(0.5-2.5) ×10(exp 47) ergs/s. The X-ray and infrared data are further consistent with co-aligned AGN obscurers in which the line of sight "skims" the torus. This is also consistent with the optical spectra, which show both coronal iron lines and broad lines in polarized but not direct light. Combining constraints from the X-ray, optical, and infrared data suggest that the AGN obscurer is within a vertical height of 20 pc, and a radius of 125 pc, of the nucleus.
Document ID
Document Type
Reprint (Version printed in journal)
Farrah, Duncan
(Virginia Tech Blacksburg, VA, United States)
Balokovic, Mislav
(California Inst. of Tech. Pasadena, CA, United States)
Stern, Daniel
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Harris, Kathryn
(Universidad de La Laguna Teneriffa, Spain)
Kunimoto, Michelle
(Imperial Coll. of London London, United Kingdom)
Walton, Dominc J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Alexander, David M.
(Durham Univ. United Kingdom)
Arevalo, Patricia
(Universidad Catolica de Valparaiso Valparaiso, Chile)
Ballantyne, David R.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Bauer, Franz E.
(Space Science Inst. Boulder, CO, United States)
Boggs, Steven
(California Univ. Berkeley, CA, United States)
Brandt, William N.
(Pennsylvania State Univ. University Park, PA, United States)
Brightman, Murray
(California Inst. of Tech. Pasadena, CA, United States)
Christensen, Finn
(Technical Univ. of Denmark Lyngby, Denmark)
Clements, David L.
(Imperial Coll. of London London, United Kingdom)
Craig, William
(Lawrence Livermore National Lab. Livermore, CA, United States)
Fabian, Andrew
(Institute of Astronomy Cambridge, United Kingdom)
Hailey, Charles
(Columbia Univ. New York, NY, United States)
Harrison, Fiona
(California Inst. of Tech. Pasadena, CA, United States)
Koss, Michael
(Eidgenoessische Technische Hochschule Zurich, Switzerland)
Lansbury, George B.
(Durham Univ. United Kingdom)
Luo, Bin
(Nanjing Univ. China)
Paine, Jennie
(Virginia Tech Blacksburg, VA, United States)
Petty, Sara
(California Univ. Berkeley, CA, United States)
Zhang, William W.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
April 14, 2017
Publication Date
October 27, 2016
Publication Information
Publication: The Astrophysical Journal
Volume: 831
Issue: 1
ISSN: 0004-637X
Subject Category
Report/Patent Number
Funding Number(s)
Distribution Limits
galaxies: evolution – galaxies: individual ( IRAS 09104 + 4109 ) – galaxies:

Available Downloads

There are no available downloads for this record.
No Preview Available