Nuclear obscuration in Seyfert 2 galaxies with and without polarized broad emission lines

被引：0
|
作者：
Shu, X. W. [1 ]
Wang, J. -X. [1 ]
Jang, P. [1 ]
Fan, L. L. [1 ]
Wang, T. -G. [1 ]
机构：
[1] Univ Sci & Technol China, Ctr Astrophys, Anhua 230026, Peoples R China
来源：
CENTRAL ENGINE OF ACTIVE GALACTIC NUCLEI | 2007年 / 373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 compiled a sample of 54 Seyfert 2 galaxies with both spectropolarimetric and X-ray observations to investigate the role of nuclear obscuration in the visibility of polarized broad emission lines (PBL). We find that at L-[O III] > 10(41) ergs s(-1), Seyfert 2 galaxies without PBL are more obscured in X-ray (at a confidence level of 99%). Our results explain the non-detections of PBL under the framework of the unified model, and put strong constraint on the geometry of the obscuring torus and the scattering region.
引用
收藏
页码：507 / 508
页数：2
相关论文
共 50 条
  • [21] Visibility of scattered broad-line emission in Seyfert 2 galaxies
    Charlene A. Heisler
    Stuart L. Lumsden
    Jeremy A. Bailey
    Nature, 1997, 385 : 700 - 702
  • [22] Visibility of scattered broad-line emission in Seyfert 2 galaxies
    Heisler, CA
    Lumsden, SL
    Bailey, JA
    NATURE, 1997, 385 (6618) : 700 - 702
  • [23] ON FORBIDDEN EMISSION LINES OF IRON IN SEYFERT GALAXIES
    NUSSBAUMER, H
    OSTERBROCK, DE
    ASTROPHYSICAL JOURNAL, 1970, 161 (03): : 811 - +
  • [24] EXTENDED NEAR-ULTRAVIOLET CONTINUUM EMISSION AND THE NATURE OF THE POLARIZED BROAD-LINE SEYFERT-2 GALAXIES
    POGGE, RW
    DEROBERTIS, MM
    ASTROPHYSICAL JOURNAL, 1993, 404 (02): : 563 - 569
  • [25] WHY ARE BROAD EMISSION-LINES SEEN IN SEYFERT-GALAXIES AND NOT IN BL LACERTAE OBJECTS
    GUILBERT, PW
    FABIAN, AC
    MCCRAY, R
    ASTROPHYSICAL JOURNAL, 1983, 266 (02): : 466 - 469
  • [26] The infrared H2 emission lines in Seyfert and Starburst galaxies
    Pastoriza, M
    Rodríguez-Ardila, A
    Viegas, S
    Prato, L
    STAR FORMATION THROUGH TIME: A CONFERENCE TO HONOR ROBERTO J. TERLEVICH, 2003, 297 : 369 - 372
  • [27] BROAD INFRARED LINE EMISSION FROM THE NUCLEI OF SEYFERT-2 GALAXIES
    BLANCO, PR
    WARD, MJ
    WRIGHT, GS
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1990, 242 (01) : P4 - P8
  • [28] PROFILES OF BROAD LINES IN SPECTRA OF QSOS AND SEYFERT-GALAXIES
    NETZER, H
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1977, 181 (03) : P89 - P92
  • [29] Broad Fe-K lines from Seyfert galaxies
    Fabian, AC
    Iwasawa, K
    BROAD BAND X-RAY SPECTRA OF COSMIC SOURCES, 2000, 25 (3-4): : 471 - 480
  • [30] Detection of the polarized broad emission line in the Seyfert 2 galaxy Markarian 573
    Nagao, T
    Kawabata, KS
    Murayama, T
    Ohyama, Y
    Taniguchi, Y
    Sumiya, R
    Sasaki, SS
    ASTRONOMICAL JOURNAL, 2004, 128 (01): : 109 - 114
12345