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Title: GALACTIC-SCALE ABSORPTION OUTFLOW IN THE LOW-LUMINOSITY QUASAR IRAS F04250-5718: HUBBLE SPACE TELESCOPE/COSMIC ORIGINS SPECTROGRAPH OBSERVATIONS

Abstract

We present absorption line analysis of the outflow in the quasar IRAS F04250-5718. Far-ultraviolet data from the Cosmic Origins Spectrograph on board the Hubble Space Telescope reveal intrinsic narrow absorption lines from high ionization ions (e.g., C IV, N V, and O VI) as well as low ionization ions (e.g., C II and Si III). We identify three kinematic components with central velocities ranging from {approx}-50 to {approx}-230 km s{sup -1}. Velocity-dependent, non-black saturation is evident from the line profiles of the high ionization ions. From the non-detection of absorption from a metastable level of C II, we are able to determine that the electron number density in the main component of the outflow is {approx}<30 cm{sup -3}. Photoionization analysis yields an ionization parameter log U{sub H} {approx} -1.6 {+-} 0.2, which accounts for changes in the metallicity of the outflow and the shape of the incident spectrum. We also consider solutions with two ionization parameters. If the ionization structure of the outflow is due to photoionization by the active galactic nucleus, we determine that the distance to this component from the central source is {approx}>3 kpc. Due to the large distance determined for the main kinematic component, we discussmore » the possibility that this outflow is part of a galactic wind.« less

Authors:
; ;  [1];  [2];  [3];  [4]; ;  [5]; ;  [6];  [7]; ;  [8];  [9];  [10];  [11];  [12];  [13];  [14];  [15]
  1. Department of Physics, Virginia Tech, Blacksburg, VA 24061 (United States)
  2. Department of Chemistry and Physics, Augusta State University, Augusta, GA 30904-2200 (United States)
  3. Center for Astrophysics and Space Astronomy, University of Colorado, Boulder, CO 80309-0389 (United States)
  4. Space Telescope Science Institute, Baltimore, MD 21218 (United States)
  5. Department of Physics, Western Michigan University, Kalamazoo, MI 49008-5252 (United States)
  6. SRON, Netherlands Institute for Space Research, 3584 CA Utrecht (Netherlands)
  7. Instituto de Astronomia, Universidad Catolica del Norte, Casilla 1280, Antofagasta (Chile)
  8. Instituto de Fisica de Cantabria (CSIC), 39005 Santander (Spain)
  9. Subaru Telescope, National Astronomical Observatory of Japan, Hilo, HI 96720 (United States)
  10. Department of Physics, Technion Israel Institute of Technology, Haifa 32000 (Israel)
  11. Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30303 (United States)
  12. Department of Astronomy, University of Wisconsin-Madison, Madison, WI 53706-1582 (United States)
  13. Physics Department, Creighton University, Omaha, NE 68178 (United States)
  14. Department of Astronomy, Harvard University, Cambridge, MA 02138 (United States)
  15. Department of Physics, Astronomy, and Geosciences, Towson University, Towson, MD 21252 (United States)
Publication Date:
OSTI Identifier:
21587541
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 739; Journal Issue: 1; Other Information: DOI: 10.1088/0004-637X/739/1/7; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABSORPTION; FAR ULTRAVIOLET RADIATION; PHOTOIONIZATION; QUASARS; COSMIC RADIO SOURCES; ELECTROMAGNETIC RADIATION; IONIZATION; RADIATIONS; SORPTION; ULTRAVIOLET RADIATION

Citation Formats

Edmonds, Doug, Borguet, Benoit, Arav, Nahum, Dunn, Jay P., Penton, Steve, Kriss, Gerard A., Korista, Kirk, Bautista, Manuel, Costantini, Elisa, Kaastra, Jelle, Steenbrugge, Katrien, Ignacio Gonzalez-Serrano, J., Benn, Chris, Aoki, Kentaro, Behar, Ehud, Micheal Crenshaw, D., Everett, John, Gabel, Jack, Moe, Maxwell, and Scott, Jennifer, E-mail: edmonds@vt.edu. GALACTIC-SCALE ABSORPTION OUTFLOW IN THE LOW-LUMINOSITY QUASAR IRAS F04250-5718: HUBBLE SPACE TELESCOPE/COSMIC ORIGINS SPECTROGRAPH OBSERVATIONS. United States: N. p., 2011. Web. doi:10.1088/0004-637X/739/1/7; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
Edmonds, Doug, Borguet, Benoit, Arav, Nahum, Dunn, Jay P., Penton, Steve, Kriss, Gerard A., Korista, Kirk, Bautista, Manuel, Costantini, Elisa, Kaastra, Jelle, Steenbrugge, Katrien, Ignacio Gonzalez-Serrano, J., Benn, Chris, Aoki, Kentaro, Behar, Ehud, Micheal Crenshaw, D., Everett, John, Gabel, Jack, Moe, Maxwell, & Scott, Jennifer, E-mail: edmonds@vt.edu. GALACTIC-SCALE ABSORPTION OUTFLOW IN THE LOW-LUMINOSITY QUASAR IRAS F04250-5718: HUBBLE SPACE TELESCOPE/COSMIC ORIGINS SPECTROGRAPH OBSERVATIONS. United States. doi:10.1088/0004-637X/739/1/7; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
Edmonds, Doug, Borguet, Benoit, Arav, Nahum, Dunn, Jay P., Penton, Steve, Kriss, Gerard A., Korista, Kirk, Bautista, Manuel, Costantini, Elisa, Kaastra, Jelle, Steenbrugge, Katrien, Ignacio Gonzalez-Serrano, J., Benn, Chris, Aoki, Kentaro, Behar, Ehud, Micheal Crenshaw, D., Everett, John, Gabel, Jack, Moe, Maxwell, and Scott, Jennifer, E-mail: edmonds@vt.edu. Tue . "GALACTIC-SCALE ABSORPTION OUTFLOW IN THE LOW-LUMINOSITY QUASAR IRAS F04250-5718: HUBBLE SPACE TELESCOPE/COSMIC ORIGINS SPECTROGRAPH OBSERVATIONS". United States. doi:10.1088/0004-637X/739/1/7; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
@article{osti_21587541,
title = {GALACTIC-SCALE ABSORPTION OUTFLOW IN THE LOW-LUMINOSITY QUASAR IRAS F04250-5718: HUBBLE SPACE TELESCOPE/COSMIC ORIGINS SPECTROGRAPH OBSERVATIONS},
author = {Edmonds, Doug and Borguet, Benoit and Arav, Nahum and Dunn, Jay P. and Penton, Steve and Kriss, Gerard A. and Korista, Kirk and Bautista, Manuel and Costantini, Elisa and Kaastra, Jelle and Steenbrugge, Katrien and Ignacio Gonzalez-Serrano, J. and Benn, Chris and Aoki, Kentaro and Behar, Ehud and Micheal Crenshaw, D. and Everett, John and Gabel, Jack and Moe, Maxwell and Scott, Jennifer, E-mail: edmonds@vt.edu},
abstractNote = {We present absorption line analysis of the outflow in the quasar IRAS F04250-5718. Far-ultraviolet data from the Cosmic Origins Spectrograph on board the Hubble Space Telescope reveal intrinsic narrow absorption lines from high ionization ions (e.g., C IV, N V, and O VI) as well as low ionization ions (e.g., C II and Si III). We identify three kinematic components with central velocities ranging from {approx}-50 to {approx}-230 km s{sup -1}. Velocity-dependent, non-black saturation is evident from the line profiles of the high ionization ions. From the non-detection of absorption from a metastable level of C II, we are able to determine that the electron number density in the main component of the outflow is {approx}<30 cm{sup -3}. Photoionization analysis yields an ionization parameter log U{sub H} {approx} -1.6 {+-} 0.2, which accounts for changes in the metallicity of the outflow and the shape of the incident spectrum. We also consider solutions with two ionization parameters. If the ionization structure of the outflow is due to photoionization by the active galactic nucleus, we determine that the distance to this component from the central source is {approx}>3 kpc. Due to the large distance determined for the main kinematic component, we discuss the possibility that this outflow is part of a galactic wind.},
doi = {10.1088/0004-637X/739/1/7; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 739,
place = {United States},
year = {2011},
month = {9}
}