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  1. 100 全学教育機構
  2. 1001 学術論文

A Census of Intrinsic Narrow Absorption Lines in the Spectra of Quasars at z = 2-4

http://hdl.handle.net/10091/10128
http://hdl.handle.net/10091/10128
cd417dac-8da4-4534-8c6c-f708893a369e
名前 / ファイル ライセンス アクション
ApJS_171_1.pdf ApJS_171_1.pdf (1.5 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2010-06-07
タイトル
言語 en
タイトル A Census of Intrinsic Narrow Absorption Lines in the Spectra of Quasars at z = 2-4
言語
言語 eng
キーワード
主題Scheme Other
主題 accretion
キーワード
主題Scheme Other
主題 accretion disks
キーワード
主題Scheme Other
主題 galaxies: active
キーワード
主題Scheme Other
主題 quasars: absorption lines
キーワード
主題Scheme Other
主題 quasars: general
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Misawa, T

× Misawa, T

WEKO 45957

Misawa, T

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Charlton, JC

× Charlton, JC

WEKO 45958

Charlton, JC

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Eracleous, M

× Eracleous, M

WEKO 45959

Eracleous, M

Search repository
Ganguly, R

× Ganguly, R

WEKO 45960

Ganguly, R

Search repository
Tytler, D

× Tytler, D

WEKO 45961

Tytler, D

Search repository
Kirkman, D

× Kirkman, D

WEKO 45962

Kirkman, D

Search repository
Suzuki, N

× Suzuki, N

WEKO 45963

Suzuki, N

Search repository
Lubin, D

× Lubin, D

WEKO 45964

Lubin, D

Search repository
信州大学研究者総覧へのリンク
氏名 Misawa, T
URL http://soar-rd.shinshu-u.ac.jp/profile/ja.ypchuUkV.html
出版者
出版者 The American Astronomical Society
引用
内容記述タイプ Other
内容記述 The Astrophysical Journal Supplement Series. 171:1-28 (2007)
書誌情報 The Astrophysical Journal Supplement Series

巻 171, 号 1, p. 1-28, 発行日 2007-07
抄録
内容記述タイプ Abstract
内容記述 We use Keck HIRES spectra of 37 optically bright quasars at z = 2-4 to study narrow absorption lines that are intrinsic to the quasars (intrinsic NALs, produced in gas that is physically associated with the quasar central engine). We identify 150 NAL systems, which contain 124 C IV, 12 N V, and 50 Si IV doublets, of which 18 are associated systems (within 5000 km s-1 of the quasar redshift). We use partial coverage analysis to separate intrinsic NALs from NALs produced in cosmologically intervening structures. We find 39 candidate intrinsic systems (28 reliable determinations and 11 that are possibly intrinsic). We estimate that 10%-17% of C IV systems at blueshifts of 5000-70,000 km s-1 relative to quasars are intrinsic. At least 32% of quasars contain one or more intrinsic C IV NALs. Considering N V and Si IV doublets showing partial coverage as well, at least 50% of quasars host intrinsic NALs. This result constrains the solid angle subtended by the absorbers to the background source(s). We identify two families of intrinsic NAL systems, those with strong N V absorption and those with negligible absorption in N V but with partial coverage in the C IV doublet. We discuss the idea that these two families represent different regions or conditions in accretion disk winds. Of the 26 intrinsic C IV NAL systems, 13 have detectable low-ionization absorption lines at similar velocities, suggesting that these are two-phase structures in the wind rather than absorbers in the host galaxy. We also compare possible models for quasar outflows, including radiatively accelerated disk-driven winds, magnetocentrifugally accelerated winds, and pressure-driven winds, and we discuss ways of distinguishing between these models observationally.
ISSN
収録物識別子タイプ ISSN
収録物識別子 0067-0049
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA00553297
DOI
識別子タイプ DOI
関連識別子 https://doi.org/10.1086/513713
関連名称 10.1086/513713
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
WoS
表示名 Web of Science
URL http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000247542400001
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