Aromatic features in AGNs: Star-forming infrared luminosity function of AGN host galaxies

Yong Shi; Patrick Ogle; George H. Rieke; Robert Antonucci; Dean C. Hines; Paul S Smith; Frank J. Low; Jeroen Bouwman; Christopher N Willmer

doi:10.1086/521594

Aromatic features in AGNs: Star-forming infrared luminosity function of AGN host galaxies

Yong Shi, Patrick Ogle, George H. Rieke, Robert Antonucci, Dean C. Hines, Paul S Smith, Frank J. Low, Jeroen Bouwman, Christopher N Willmer

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

98 Scopus citations

Abstract

We describe observations of aromatic features at 7.7 and 11.3 μm in AGNs of three types, including PG, 2MASS, and 3CR objects. The feature has been demonstrated to originate predominantly from star formation. Based on the aromatic-derived star-forming luminosity, we find that the far-IR emission of AGNs can be dominated by either star formation or nuclear emission; the average contribution from star formation is around 25% at 70 and 160 μm. The starforming infrared luminosity functions of the three types of AGNs are flatter than those of field galaxies, implying that nuclear activity and star formation tend to be enhanced together. The star-forming luminosity function is also a function of the strength of nuclear activity from normal galaxies to the bright quasars, with luminosity functions becoming flatter for more intense nuclear activity. Different types of AGNs show different distributions in the level of star formation activity, with 2MASS > PG > 3CR star formation rates.

Original language	English (US)
Pages (from-to)	841-861
Number of pages	21
Journal	Astrophysical Journal
Volume	669
Issue number	2
DOIs	https://doi.org/10.1086/521594
State	Published - Nov 10 2007

Keywords

Galaxies: active
Galaxies: starburst
Infrared: galaxies

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/521594

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title = "Aromatic features in AGNs: Star-forming infrared luminosity function of AGN host galaxies",

abstract = "We describe observations of aromatic features at 7.7 and 11.3 μm in AGNs of three types, including PG, 2MASS, and 3CR objects. The feature has been demonstrated to originate predominantly from star formation. Based on the aromatic-derived star-forming luminosity, we find that the far-IR emission of AGNs can be dominated by either star formation or nuclear emission; the average contribution from star formation is around 25% at 70 and 160 μm. The starforming infrared luminosity functions of the three types of AGNs are flatter than those of field galaxies, implying that nuclear activity and star formation tend to be enhanced together. The star-forming luminosity function is also a function of the strength of nuclear activity from normal galaxies to the bright quasars, with luminosity functions becoming flatter for more intense nuclear activity. Different types of AGNs show different distributions in the level of star formation activity, with 2MASS > PG > 3CR star formation rates.",

keywords = "Galaxies: active, Galaxies: starburst, Infrared: galaxies",

author = "Yong Shi and Patrick Ogle and Rieke, {George H.} and Robert Antonucci and Hines, {Dean C.} and Smith, {Paul S} and Low, {Frank J.} and Jeroen Bouwman and Willmer, {Christopher N}",

year = "2007",

month = nov,

day = "10",

doi = "10.1086/521594",

language = "English (US)",

volume = "669",

pages = "841--861",

journal = "Astrophysical Journal",

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T1 - Aromatic features in AGNs

T2 - Star-forming infrared luminosity function of AGN host galaxies

AU - Shi, Yong

AU - Ogle, Patrick

AU - Rieke, George H.

AU - Antonucci, Robert

AU - Hines, Dean C.

AU - Smith, Paul S

AU - Low, Frank J.

AU - Bouwman, Jeroen

AU - Willmer, Christopher N

PY - 2007/11/10

Y1 - 2007/11/10

N2 - We describe observations of aromatic features at 7.7 and 11.3 μm in AGNs of three types, including PG, 2MASS, and 3CR objects. The feature has been demonstrated to originate predominantly from star formation. Based on the aromatic-derived star-forming luminosity, we find that the far-IR emission of AGNs can be dominated by either star formation or nuclear emission; the average contribution from star formation is around 25% at 70 and 160 μm. The starforming infrared luminosity functions of the three types of AGNs are flatter than those of field galaxies, implying that nuclear activity and star formation tend to be enhanced together. The star-forming luminosity function is also a function of the strength of nuclear activity from normal galaxies to the bright quasars, with luminosity functions becoming flatter for more intense nuclear activity. Different types of AGNs show different distributions in the level of star formation activity, with 2MASS > PG > 3CR star formation rates.

AB - We describe observations of aromatic features at 7.7 and 11.3 μm in AGNs of three types, including PG, 2MASS, and 3CR objects. The feature has been demonstrated to originate predominantly from star formation. Based on the aromatic-derived star-forming luminosity, we find that the far-IR emission of AGNs can be dominated by either star formation or nuclear emission; the average contribution from star formation is around 25% at 70 and 160 μm. The starforming infrared luminosity functions of the three types of AGNs are flatter than those of field galaxies, implying that nuclear activity and star formation tend to be enhanced together. The star-forming luminosity function is also a function of the strength of nuclear activity from normal galaxies to the bright quasars, with luminosity functions becoming flatter for more intense nuclear activity. Different types of AGNs show different distributions in the level of star formation activity, with 2MASS > PG > 3CR star formation rates.

KW - Galaxies: active

KW - Galaxies: starburst

KW - Infrared: galaxies

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DO - 10.1086/521594

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JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

Aromatic features in AGNs: Star-forming infrared luminosity function of AGN host galaxies

Abstract

Keywords

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