Luminosity-dependent evolution of soft X-ray selected AGN - New Chandra and XMM-Newton surveys

被引：563

作者：

Hasinger, G

Miyaji, T

Schmidt, M

机构：

[1] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany

[2] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA

[3] CALTECH, Pasadena, CA 91125 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2005年 / 441卷 / 02期

关键词：

galaxies : active; X-rays : general;

D O I：

10.1051/0004-6361:20042134

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present new results on the cosmological evolution of unabsorbed (type-1) active galactic nuclei (AGN) selected in the soft (0.5-2 keV) X-ray band. From a variety of ROSAT, XMM-Newton and Chandra surveys we selected a total of similar to 1000 AGN with an unprecedented spectroscopic and photometric optical/NIR identification completeness. For the first time we are able to derive reliable space densities for low-luminosity (Seyfert-type) X-ray sources at cosmological redshifts. The evolutionary behaviour of AGN shows a strong dependence on X-ray luminosity: while the space density of high-luminosity AGN reaches a peak around z similar to 2, similar to that of optically selected QSO, the space density of low-luminosity AGNs peaks at redshifts below z = 1. This confirms previous ROSAT findings of a luminosity-dependent density evolution. Using a rigorous treatment of the optical identification completeness we are able to show that the space density of AGN with X-ray luminosities L-x < 10(45) erg s(-1) declines significantly towards high redshifts.

引用

页码：417 / 434

页数：18

共 76 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] Identification of a complete sample of northern Rosat All-Sky Survey X-ray sources. III. The catalog [J].

Appenzeller, I ;

Thiering, I ;

Zickgraf, FJ ;

Krautter, J ;

Voges, W ;

Chavarria, C ;

Kneer, R ;

Mujica, R ;

Pakull, M ;

Rosso, C ;

Ruzicka, F ;

Serrano, A ;

Ziegler, B .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1998, 117 (02) :319-340

[3] The XMM-Newton serendipitous survey -: II.: First results from the AXIS high galactic latitude medium sensitivity survey [J].

Barcons, X ;

Carrera, FJ ;

Watson, MG ;

McMahon, RG ;

Aschenbach, B ;

Freyberg, MJ ;

Page, K ;

Page, MJ ;

Roberts, TP ;

Turner, MJL ;

Barret, D ;

Brunner, H ;

Ceballos, MT ;

Della Ceca, R ;

Guillout, P ;

Hasinger, G ;

Maccacaro, T ;

Mateos, S ;

Motch, C ;

Negueruela, I ;

Osborne, JP ;

Pérez-Fournon, I ;

Schwope, A ;

Severgnini, P ;

Szokoly, GP ;

Webb, NA ;

Wheatley, PJ ;

Worrall, DM .

ASTRONOMY & ASTROPHYSICS, 2002, 382 (02) :522-536

[4] The cosmic evolution of hard X-ray-selected active galactic nuclei [J].

Barger, AJ ;

Cowie, LL ;

Mushotzky, RF ;

Yang, Y ;

Wang, WH ;

Steffen, AT ;

Capak, P .

ASTRONOMICAL JOURNAL, 2005, 129 (02) :578-609

[5] 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

[6] The nature of the hard X-ray background sources: Optical, near-infrared, submillimeter, and radio properties [J].

Barger, AJ ;

Cowie, LL ;

Mushotzky, RF ;

Richards, EA .

ASTRONOMICAL JOURNAL, 2001, 121 (02) :662-682

[7] The ROSAT North Ecliptic Pole deep survey [J].

Bower, RG ;

Hasinger, G ;

Castander, FJ ;

AragonSalamanca, A ;

Ellis, RS ;

Gioia, IM ;

Henry, JP ;

Burg, R ;

Huchra, JP ;

Bohringer, H ;

Briel, UG ;

McLean, B .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1996, 281 (01) :59-70

[8] A DEEP ROSAT SURVEY .1. THE QSO X-RAY LUMINOSITY FUNCTION [J].

BOYLE, BJ ;

GRIFFITHS, RE ;

SHANKS, T ;

STEWART, GC ;

GEORGANTOPOULOS, I .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1993, 260 (01) :49-58

[9]

COMASTRI A, 1995, ASTRON ASTROPHYS, V296, P1

[10] A large sample of spectroscopic redshifts in the ACS-GOODS region of the Hubble Deep Field North [J].

Cowie, LL ;

Barger, AJ ;

Hu, EM ;

Capak, P ;

Songaila, A .

ASTRONOMICAL JOURNAL, 2004, 127 (06) :3137-3145

← 1 2 3 4 5 6 7 8 →