Far-infrared properties of type 1 quasars

D. J. Hanish; H. I. Teplitz; P. Capak; V. Desai; L. Armus; C. Brinkworth; T. Brooke; J. Colbert; D. Fadda; D. Frayer; M. Huynh; M. Lacy; E. Murphy; A. Noriega-Crespo; R. Paladini; C. Scarlata; S. Shenoy

doi:10.1088/0004-637X/768/1/13

Far-infrared properties of type 1 quasars

D. J. Hanish
, H. I. Teplitz
, P. Capak
, V. Desai
, L. Armus
, C. Brinkworth
, T. Brooke
, J. Colbert
, D. Fadda
, D. Frayer
, M. Huynh
, M. Lacy
, E. Murphy
, A. Noriega-Crespo
, R. Paladini
, C. Scarlata
, S. Shenoy

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We use the Spitzer Space Telescope Enhanced Imaging Products and the Spitzer Archival Far-InfraRed Extragalactic Survey to study the spectral energy distributions (SEDs) of spectroscopically confirmed type 1 quasars selected from the Sloan Digital Sky Survey (SDSS). By combining the Spitzer and SDSS data with the Two Micron All Sky Survey, we are able to construct a statistically robust rest-frame 0.1-100 μm type 1 quasar template. We find that the quasar population is well-described by a single power-law SED at wavelengths less than 20 μm, in good agreement with previous work. However, at longer wavelengths, we find a significant excess in infrared luminosity above an extrapolated power-law, along with significant object-to-object dispersion in the SED. The mean excess reaches a maximum of 0.8 dex at rest-frame wavelengths near 100 μm.

Original language	English
Article number	13
Journal	Astrophysical Journal
Volume	768
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/768/1/13
State	Published - May 1 2013
Externally published	Yes

Keywords

galaxies: active
infrared: galaxies
quasars: general
surveys

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10.1088/0004-637X/768/1/13

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title = "Far-infrared properties of type 1 quasars",

abstract = "We use the Spitzer Space Telescope Enhanced Imaging Products and the Spitzer Archival Far-InfraRed Extragalactic Survey to study the spectral energy distributions (SEDs) of spectroscopically confirmed type 1 quasars selected from the Sloan Digital Sky Survey (SDSS). By combining the Spitzer and SDSS data with the Two Micron All Sky Survey, we are able to construct a statistically robust rest-frame 0.1-100 μm type 1 quasar template. We find that the quasar population is well-described by a single power-law SED at wavelengths less than 20 μm, in good agreement with previous work. However, at longer wavelengths, we find a significant excess in infrared luminosity above an extrapolated power-law, along with significant object-to-object dispersion in the SED. The mean excess reaches a maximum of 0.8 dex at rest-frame wavelengths near 100 μm.",

keywords = "galaxies: active, infrared: galaxies, quasars: general, surveys",

author = "Hanish, \{D. J.\} and Teplitz, \{H. I.\} and P. Capak and V. Desai and L. Armus and C. Brinkworth and T. Brooke and J. Colbert and D. Fadda and D. Frayer and M. Huynh and M. Lacy and E. Murphy and A. Noriega-Crespo and R. Paladini and C. Scarlata and S. Shenoy",

year = "2013",

month = may,

day = "1",

doi = "10.1088/0004-637X/768/1/13",

language = "English",

volume = "768",

journal = "Astrophysical Journal",

issn = "0004-637X",

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TY - JOUR

T1 - Far-infrared properties of type 1 quasars

AU - Hanish, D. J.

AU - Teplitz, H. I.

AU - Capak, P.

AU - Desai, V.

AU - Armus, L.

AU - Brinkworth, C.

AU - Brooke, T.

AU - Colbert, J.

AU - Fadda, D.

AU - Frayer, D.

AU - Huynh, M.

AU - Lacy, M.

AU - Murphy, E.

AU - Noriega-Crespo, A.

AU - Paladini, R.

AU - Scarlata, C.

AU - Shenoy, S.

PY - 2013/5/1

Y1 - 2013/5/1

N2 - We use the Spitzer Space Telescope Enhanced Imaging Products and the Spitzer Archival Far-InfraRed Extragalactic Survey to study the spectral energy distributions (SEDs) of spectroscopically confirmed type 1 quasars selected from the Sloan Digital Sky Survey (SDSS). By combining the Spitzer and SDSS data with the Two Micron All Sky Survey, we are able to construct a statistically robust rest-frame 0.1-100 μm type 1 quasar template. We find that the quasar population is well-described by a single power-law SED at wavelengths less than 20 μm, in good agreement with previous work. However, at longer wavelengths, we find a significant excess in infrared luminosity above an extrapolated power-law, along with significant object-to-object dispersion in the SED. The mean excess reaches a maximum of 0.8 dex at rest-frame wavelengths near 100 μm.

AB - We use the Spitzer Space Telescope Enhanced Imaging Products and the Spitzer Archival Far-InfraRed Extragalactic Survey to study the spectral energy distributions (SEDs) of spectroscopically confirmed type 1 quasars selected from the Sloan Digital Sky Survey (SDSS). By combining the Spitzer and SDSS data with the Two Micron All Sky Survey, we are able to construct a statistically robust rest-frame 0.1-100 μm type 1 quasar template. We find that the quasar population is well-described by a single power-law SED at wavelengths less than 20 μm, in good agreement with previous work. However, at longer wavelengths, we find a significant excess in infrared luminosity above an extrapolated power-law, along with significant object-to-object dispersion in the SED. The mean excess reaches a maximum of 0.8 dex at rest-frame wavelengths near 100 μm.

KW - galaxies: active

KW - infrared: galaxies

KW - quasars: general

KW - surveys

UR - https://www.scopus.com/pages/publications/84876758873

U2 - 10.1088/0004-637X/768/1/13

DO - 10.1088/0004-637X/768/1/13

M3 - Article

AN - SCOPUS:84876758873

SN - 0004-637X

VL - 768

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 13

ER -

Far-infrared properties of type 1 quasars

Abstract

Keywords

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