C.-T.J. Chen
A Connection between Obscuration and Star Formation in Luminous Quasars
Chen, C.-T.J.; Hickox, R.C.; Alberts, S.; Harrison, C.M.; Alexander, D.M.; Assef, R.; Brodwin, M.; Brown, M.J.I.; Del Moro, A.; Forman, W.R.; Gorjian, V.; Goulding, A.D.; Hainline, K.N.; Jones, C.; Kochanek, C.S.; Murray, S.S.; Pope, A.; Rovilos, E.; Stern, D.
Authors
R.C. Hickox
S. Alberts
C.M. Harrison
Professor David Alexander d.m.alexander@durham.ac.uk
Professor
R. Assef
M. Brodwin
M.J.I. Brown
A. Del Moro
W.R. Forman
V. Gorjian
A.D. Goulding
K.N. Hainline
C. Jones
C.S. Kochanek
S.S. Murray
A. Pope
E. Rovilos
D. Stern
Abstract
We present a measurement of the star formation properties of a uniform sample of mid-IR-selected, optically unobscured, and obscured quasars (QSO1s and QSO2s) in the Boötes survey region. We use a spectral energy distribution analysis for photometric data spanning optical to far-IR wavelengths to separate the active galactic nucleus (AGN) and host galaxy components. We find that when compared to a matched sample of QSO1s, the QSO2s have roughly twice the far-IR detection fractions, far-IR fluxes, and infrared star formation luminosities ($L_{{\rm IR}}^{{\rm SF}}$). Correspondingly, we show that the AGN obscured fraction rises from 0.3 to 0.7 between (4–40) × ${{10}^{11}}{{L}_{\odot }}$. We also find evidence associating X-ray absorption with the presence of far-IR-emitting dust. Overall, these results are consistent with galaxy evolution models in which quasar obscuration is associated with dust-enshrouded starburst galaxies.
Citation
Chen, C., Hickox, R., Alberts, S., Harrison, C., Alexander, D., Assef, R., …Stern, D. (2015). A Connection between Obscuration and Star Formation in Luminous Quasars. Astrophysical Journal, 802(1), Article 50. https://doi.org/10.1088/0004-637x/802/1/50
Journal Article Type | Article |
---|---|
Acceptance Date | Jan 20, 2015 |
Publication Date | Mar 20, 2015 |
Deposit Date | May 15, 2015 |
Publicly Available Date | May 21, 2015 |
Journal | Astrophysical Journal |
Print ISSN | 0004-637X |
Electronic ISSN | 1538-4357 |
Publisher | American Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 802 |
Issue | 1 |
Article Number | 50 |
DOI | https://doi.org/10.1088/0004-637x/802/1/50 |
Keywords | Galaxies: active, Galaxies: starburst, Infrared: galaxies, Quasars: general, X-rays: galaxies. |
Public URL | https://durham-repository.worktribe.com/output/1428663 |
Related Public URLs | http://adsabs.harvard.edu/abs/2015ApJ...802...50C |
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Copyright Statement
© 2015. The American Astronomical Society. All rights reserved.
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