Broad iron Kα line at z=1.146

被引：11

作者：

Comastri, A

Brusa, M

Civano, F

机构：

[1] Osservatorio Astron Bologna, INAF, I-40127 Bologna, Italy

[2] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2004年 / 351卷 / 01期

关键词：

galaxies : active; galaxies : individual : CXOJ 123716.7+621733; X-rays : galaxies;

D O I：

10.1111/j.1365-2966.2004.07929.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of a strong iron Kalpha line in the hard X-ray selected source CXOJ 123716.7+621733 in the Chandra Deep Field-North survey at z = 1.146. The analysis is made possible by the very deep exposure of similar to2 Ms and the low background of the Advanced CCD Imaging Spectrometer (ACIS). The line profile seems to be inconsistent with a narrow feature. The best-fitting solution is achieved with a broad line. Most of the flux in the broad component originates at energies below 6.4 keV with a shape similar to that expected from emission in the inner-most regions of the accretion disc.

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页码：L9 / L13

页数：5

相关论文

共 24 条

[1] The Chandra Deep Field North survey. XIII. 2 Ms point-source catalogs [J].

Alexander, DM ;

Bauer, FE ;

Brandt, WN ;

Schneider, DP ;

Hornschemeier, AE ;

Vignali, C ;

Barger, AJ ;

Broos, PS ;

Cowie, LL ;

Garmire, GP ;

Townsley, LK ;

Bautz, MW ;

Chartas, G ;

Sargent, WLW .

ASTRONOMICAL JOURNAL, 2003, 126 (02) :539-574

[2] The Chandra Deep Field North survey. XIV. X-ray detected obscured AGNs and starburst galaxies in the bright submillimeter source population [J].

Alexander, DM ;

Bauer, FE ;

Brandt, WN ;

Hornschemeier, AE ;

Vignali, C ;

Garmire, GP ;

Schneider, DP ;

Chartas, G ;

Gallagher, SC .

ASTRONOMICAL JOURNAL, 2003, 125 (02) :383-397

[3] Optical and infrared properties of the 2 Ms Chandra Deep Field North X-ray sources [J].

Barger, AJ ;

Cowie, LL ;

Capak, P ;

Alexander, DM ;

Bauer, FE ;

Fernandez, E ;

Brandt, WN ;

Garmire, GP ;

Hornschemeier, AE .

ASTRONOMICAL JOURNAL, 2003, 126 (02) :632-665

[4] X-ray, optical, and infrared imaging and spectral properties of the 1 Ms Chandra Deep Field North sources [J].

Barger, AJ ;

Cowie, LL ;

Brandt, WN ;

Capak, P ;

Garmire, GP ;

Hornschemeier, AE ;

Steffen, AT ;

Wehner, EH .

ASTRONOMICAL JOURNAL, 2002, 124 (04) :1839-1885

[5]

DEANGAN GC, 2003, APJ, V592, P52

[6] A long hard look at MCG-6-30-15 with XMM-Newton [J].

Fabian, AC ;

Vaughan, S ;

Nandra, K ;

Iwasawa, K ;

Ballantyne, DR ;

Lee, JC ;

De Rosa, A ;

Turner, A ;

Young, AJ .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2002, 335 (01) :L1-L5

[7] Broad iron lines in active Galactic nuclei [J].

Fabian, AC ;

Iwasawa, K ;

Reynolds, CS ;

Young, AJ .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2000, 112 (775) :1145-1161

[8] X-RAY-FLUORESCENCE FROM THE INNER DISK IN CYGNUS X-1 [J].

FABIAN, AC ;

REES, MJ ;

STELLA, L ;

WHITE, NE .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1989, 238 (02) :729-736

[9] Powerful, obscured active galactic nuclei among X-ray hard, optically dim serendipitous Chandra sources [J].

Gandhi, P ;

Crawford, CS ;

Fabian, AC ;

Johnstone, RM .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2004, 348 (02) :529-550

[10] X-ray observations of optically selected, radio-quiet quasars.: I.: The ASCA results [J].

George, IM ;

Turner, TJ ;

Yaqoob, T ;

Netzer, H ;

Laor, A ;

Mushotzky, RF ;

Nandra, K ;

Takahashi, T .

ASTROPHYSICAL JOURNAL, 2000, 531 (01) :52-80