The origin of weak emission-line AGNs

Yuan Liu; Jin Zhang; Shuang Nan Zhang

doi:10.1017/S1743921312019941

The origin of weak emission-line AGNs

Yuan Liu^*, Jin Zhang, Shuang Nan Zhang

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Some abnormal AGNs are discovered in the SDSS data recently. The usual UV/optical emission lines are exceptionally weak in their UV/optical spectroscopy, though the shapes and luminosities of their continua are comparable with that of the normal AGNs. We investigated the optical variations and the near-infrared spectra of these weak emission-line AGNs. We propose that these AGNs can be interpreted as the early stage of an active cycle of AGNs.

Original language	English
Title of host publication	Feeding Compact Objects
Subtitle of host publication	Accretion on All Scales
Editors	Chengmin Zhang, Tomaso Belloni, Mariano Mendez, Shuangnan Zhang
Pages	267-268
Number of pages	2
Edition	S290
DOIs	https://doi.org/10.1017/S1743921312019941
Publication status	Published - Aug 2012
Externally published	Yes

Publication series

Name	Proceedings of the International Astronomical Union
Number	S290
Volume	8
ISSN (Print)	1743-9213
ISSN (Electronic)	1743-9221

Keywords

Quasars: emission lines
infrared: galaxies
line: formation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1017/S1743921312019941

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title = "The origin of weak emission-line AGNs",

abstract = "Some abnormal AGNs are discovered in the SDSS data recently. The usual UV/optical emission lines are exceptionally weak in their UV/optical spectroscopy, though the shapes and luminosities of their continua are comparable with that of the normal AGNs. We investigated the optical variations and the near-infrared spectra of these weak emission-line AGNs. We propose that these AGNs can be interpreted as the early stage of an active cycle of AGNs.",

keywords = "Quasars: emission lines, infrared: galaxies, line: formation",

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year = "2012",

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language = "English",

isbn = "9781107033795",

series = "Proceedings of the International Astronomical Union",

number = "S290",

pages = "267--268",

editor = "Chengmin Zhang and Tomaso Belloni and Mariano Mendez and Shuangnan Zhang",

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The origin of weak emission-line AGNs. / Liu, Yuan; Zhang, Jin; Zhang, Shuang Nan.
Feeding Compact Objects: Accretion on All Scales. ed. / Chengmin Zhang; Tomaso Belloni; Mariano Mendez; Shuangnan Zhang. S290. ed. 2012. p. 267-268 (Proceedings of the International Astronomical Union; Vol. 8, No. S290).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - The origin of weak emission-line AGNs

AU - Liu, Yuan

AU - Zhang, Jin

AU - Zhang, Shuang Nan

PY - 2012/8

Y1 - 2012/8

N2 - Some abnormal AGNs are discovered in the SDSS data recently. The usual UV/optical emission lines are exceptionally weak in their UV/optical spectroscopy, though the shapes and luminosities of their continua are comparable with that of the normal AGNs. We investigated the optical variations and the near-infrared spectra of these weak emission-line AGNs. We propose that these AGNs can be interpreted as the early stage of an active cycle of AGNs.

AB - Some abnormal AGNs are discovered in the SDSS data recently. The usual UV/optical emission lines are exceptionally weak in their UV/optical spectroscopy, though the shapes and luminosities of their continua are comparable with that of the normal AGNs. We investigated the optical variations and the near-infrared spectra of these weak emission-line AGNs. We propose that these AGNs can be interpreted as the early stage of an active cycle of AGNs.

KW - Quasars: emission lines

KW - infrared: galaxies

KW - line: formation

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U2 - 10.1017/S1743921312019941

DO - 10.1017/S1743921312019941

M3 - Conference contribution

AN - SCOPUS:84874420741

SN - 9781107033795

T3 - Proceedings of the International Astronomical Union

SP - 267

EP - 268

BT - Feeding Compact Objects

A2 - Zhang, Chengmin

A2 - Belloni, Tomaso

A2 - Mendez, Mariano

A2 - Zhang, Shuangnan

ER -

The origin of weak emission-line AGNs

Abstract

Publication series

Keywords

UN SDGs

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