Different velocity dependences of physical conditions of high- and low-ionization lines in broad-line regions

被引：0
|
作者：
Snedden, SA [1 ]
Gaskell, CM [1 ]
机构：
[1] New Mexico State Univ, Apache Point Observ, Sunspot, NM 88349 USA
来源：
AGN PHYSICS WITH THE SLOAN DIGITAL SKY SURVEY | 2004年 / 311卷
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present results from a study of high- and low-ionization emission line ratios as a function of projected velocity for a sample of eight active galactic nuclei (AGNs). Our results are based on analysis of high signal-to-noise optical and Hubble Space Telescope (HST) UV spectra. Comparing the emission line ratios to those predicted by photoionization models indicates that the physical conditions responsible for the high-ionization emission lines axe consistent with a wind, whereas those of the low-ionization lines axe consistent with a virialized disk.
引用
收藏
页码：197 / 200
页数：4
相关论文
共 17 条
  • [1] Comparative analysis of the high- and low-ionization lines in the broad-line region of active galactic nuclei
    Marziani, P
    Sulentic, JW
    DultzinHacyan, D
    Calvani, M
    Moles, M
    ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1996, 104 (01): : 37 - 70
  • [2] The different origins of high- and low-ionization broad emission lines revealed by gravitational microlensing in the Einstein cross
    Braibant, L.
    Hutsemekers, D.
    Sluse, D.
    Anguita, T.
    ASTRONOMY & ASTROPHYSICS, 2016, 592
  • [3] Physical conditions in low-ionization regions of the Orion Nebula
    Baldwin, JA
    Crotts, A
    Dufour, RJ
    Ferland, GJ
    Heathcote, S
    Hester, JJ
    Korista, KT
    Martin, PG
    ODell, CR
    Rubin, RH
    Tielens, AGGM
    Verner, DA
    Verner, EM
    Walter, DK
    Wen, Z
    ASTROPHYSICAL JOURNAL, 1996, 468 (02): : L115 - L118
  • [4] Low-ionization emission regions in quasars: Gas properties probed with broad OI and CaII lines
    Matsuoka, Y.
    Kawara, K.
    Oyabu, S.
    ASTROPHYSICAL JOURNAL, 2008, 673 (01): : 62 - 68
  • [5] Black hole mass estimates in quasars A comparative analysis of high- and low-ionization lines
    Marziani, P.
    del Olmo, A.
    Martinez-Carballo, M. A.
    Martinez-Aldama, M. L.
    Stirpe, G. M.
    Negrete, C. A.
    Dultzin, D.
    D'Onofrio, M.
    Bon, E.
    Bon, N.
    ASTRONOMY & ASTROPHYSICS, 2019, 627
  • [6] Evolution of active galactic nuclei broad-line region clouds:: low- and high-ionization lines
    Gonçalves, DR
    Friaça, ACS
    Jatenco-Pereira, V
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2001, 328 (02) : 409 - 418
  • [7] The sizes of broad emission line regions and black hole masses of double-peaked broad low-ionization emission line objects
    Zhang, Xue-Guang
    Dultzin-Hacyan, D.
    Wang, Ting-Gui
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2007, 376 (03) : 1335 - 1340
  • [8] High-ionization emission-line ratios from quasar broad-line regions: metallicity or density?
    Temple, Matthew J.
    Ferland, Gary J.
    Rankine, Amy L.
    Chatzikos, Marios
    Hewett, Paul C.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2021, 505 (03) : 3247 - 3259
  • [9] The Sloan Digital Sky Survey Reverberation Mapping Project: Low-ionization Broad-line Widths and Implications for Virial Black Hole Mass Estimation
    Wang, Shu
    Shen, Yue
    Jiang, Linhua
    Horne, Keith
    Brandt, W. N.
    Grier, C. J.
    Ho, Luis C.
    Homayouni, Yasaman
    Li, Jennifer I-Hsiu
    Schneider, Donald P.
    Trump, Jonathan R.
    ASTROPHYSICAL JOURNAL, 2019, 882 (01):
  • [10] Physical conditions of iron-peak low-ionization lines in the FeLoBAL quasar Q0059-2735
    Xu, Xinfeng
    Arav, Nahum
    Miller, Timothy
    Korista, Kirk T.
    Benn, Chris
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2021, 506 (02) : 2725 - 2738
12