Low redshift AGN in the Hamburg/ESO survey I. The local AGN luminosity function

被引：40

作者：

Schulze, A. ^{[1
]}

Wisotzki, L. ^{[1
]}

Husemann, B. ^{[1
]}

机构：

[1] Astrophys Inst Potsdam, D-14482 Potsdam, Germany

来源：

ASTRONOMY & ASTROPHYSICS | 2009年 / 507卷 / 02期

关键词：

galaxies: active; galaxies: nuclei; quasars: general; ACTIVE GALACTIC NUCLEI; DIGITAL-SKY-SURVEY; SUPERMASSIVE BLACK-HOLES; EMISSION-LINE LUMINOSITY; H-ALPHA-EMISSION; SEYFERT-GALAXIES; BRIGHT QSOS; FAINT-END; EVOLUTION; GROWTH;

D O I：

10.1051/0004-6361/200912730

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a determination of the local (z approximate to 0) luminosity function of optically selected type 1 (broad-line) active galactic nuclei. Our primary resource is the Hamburg/ESO survey (HES), which provides a well-defined sample of more than 300 optically bright AGN with redshifts z < 0.3 and blue magnitudes B less than or similar to 17.5. AGN luminosities were estimated in two ways, always taking care to minimise photometric biases due to host galaxy light contamination. Firstly, we measured broad-band B(J) (blue) magnitudes of the objects over small apertures of the size of the seeing disk. Secondly, we extracted H alpha and H beta broad emission line luminosities from the spectra which should be entirely free of any starlight contribution. Within the luminosity range covered by the HES (-19 greater than or similar to M(BJ) greater than or similar to -26), the two measures are tightly correlated. The resulting AGN luminosity function (AGNLF) is consistent with a single power law, also when considering the effects of number density evolution within the narrow redshift range. We compared our AGNLF with the Ha luminosity function of lower luminosity Seyfert 1 galaxies by Hao et al. (2005a, AJ, 129, 1795) and found a smooth transition between both, with excellent agreement in the overlapping region. From the combination of HES and SDSS samples we constructed a single local AGNLF spanning more than 4 orders of magnitude in luminosity. It shows only mild curvature which can be well described as a double power law with slope indices of -2.0 for the faint end and -2.8 for the bright end. We predicted the local AGNLF in the soft X-ray domain and compared this to recent literature data. The quality of the match depends strongly on the adopted translation of optical to X-ray luminosities and is best for an approximately constant optical/X-ray ratio. We also compared the local AGNLF with results obtained at higher redshifts and find strong evidence for luminosity-dependent evolution, in the sense that AGN with luminosities around M(B) similar or equal to -19 are as common in the local universe as they were at z = 1.5. This supports the "AGN downsizing" picture first found from X-ray selected AGN samples.

引用

页码：781 / 793

页数：13

共 42 条

[1] The VVDS type-1 AGN sample:: the faint end of the luminosity function [J].

Bongiorno, A. ;

Zamorani, G. ;

Gavignaud, I. ;

Marano, B. ;

Paltani, S. ;

Mathez, G. ;

Moller, P. ;

Picat, J. P. ;

Cirasuolo, M. ;

Lamareille, F. ;

Bottini, D. ;

Garilli, B. ;

Le Brun, V. ;

Le Fevre, O. ;

Maccagni, D. ;

Scaramella, R. ;

Scodeggio, M. ;

Tresse, L. ;

Vettolani, G. ;

Zanichelli, A. ;

Adami, C. ;

Arnouts, S. ;

Bardelli, S. ;

Bolzonella, M. ;

Cappi, A. ;

Charlot, S. ;

Ciliegi, P. ;

Contini, T. ;

Foucaud, S. ;

Franzetti, P. ;

Guzzo, L. ;

Ilbert, O. ;

Iovino, A. ;

McCracken, H. J. ;

Marinoni, C. ;

Mazure, A. ;

Meneux, B. ;

Merighi, R. ;

Pello, R. ;

Pollo, A. ;

Pozzetti, L. ;

Radovich, M. ;

Zucca, E. ;

Hatziminaoglou, E. ;

Polletta, M. ;

Bondi, M. ;

Brinchmann, J. ;

Cucciati, O. ;

de la Torre, S. ;

Gregorini, L. .

ASTRONOMY & ASTROPHYSICS, 2007, 472 (02) :443-454

[2] The 2dF QSO Redshift Survey - I. The optical luminosity function of quasi-stellar objects [J].

Boyle, BJ ;

Shanks, T ;

Croom, SM ;

Smith, RJ ;

Miller, L ;

Loaring, N ;

Heymans, C .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2000, 317 (04) :1014-1022

[3] An all-sky set of (B) - V - R photometric calibrators for Schmidt surveys -: GSPC2.1:: First release [J].

Bucciarelli, B ;

Yus, JG ;

Casalegno, R ;

Postman, M ;

Lasker, BM ;

Sturch, C ;

Lattanzi, MG ;

McLean, BJ ;

Costa, E ;

Falasca, A ;

Le Poole, R ;

Massone, G ;

Potter, M ;

Rosenberg, A ;

Borgman, T ;

Doggett, J ;

Morrison, J ;

Pizzuti, A ;

Pompei, E ;

Rehner, D ;

Siciliano, L ;

Wolfe, D .

ASTRONOMY & ASTROPHYSICS, 2001, 368 (01) :335-346

[4] THE RELATIONSHIP BETWEEN INFRARED, OPTICAL, AND ULTRAVIOLET EXTINCTION [J].

CARDELLI, JA ;

CLAYTON, GC ;

MATHIS, JS .

ASTROPHYSICAL JOURNAL, 1989, 345 (01) :245-256

[5] The 2dF-SDSS LRG and QSO Survey: the spectroscopic QSO catalogue [J].

Croom, Scott M. ;

Richards, Gordon T. ;

Shanks, Tom ;

Boyle, Brian J. ;

Sharp, Robert G. ;

Bland-Hawthorn, Joss ;

Bridges, Terry ;

Brunner, Robert J. ;

Cannon, Russell ;

Carson, Daniel ;

Chiu, Kuenley ;

Colless, Matthew ;

Couch, Warrick ;

De Propris, Roberto ;

Drinkwater, Michael J. ;

Edge, Alastair ;

Fine, Stephen ;

Loveday, Jon ;

Miller, Lance ;

Myers, Adam D. ;

Nichol, Robert C. ;

Outram, Phil ;

Pimbblet, Kevin ;

Roseboom, Isaac ;

Ross, Nicholas ;

Schneider, Donald P. ;

Smith, Allyn ;

Stoughton, Chris ;

Strauss, Michael A. ;

Wake, David .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2009, 392 (01) :19-44

[6] The 2dF QSO Redshift Survey - XII. The spectroscopic catalogue and luminosity function [J].

Croom, SM ;

Smith, RJ ;

Boyle, BJ ;

Shanks, T ;

Miller, L ;

Outram, PJ ;

Loaring, NS .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2004, 349 (04) :1397-1418

[7]

CROOM SM, 2009, ARXIV09072727

[8] The flux ratio of the [O III]λλ5007, 4959 lines in AGN:: comparison with theoretical calculations [J].

Dimitrijevic, M. S. ;

Popovic, L. C. ;

Kovacevic, J. ;

Dacic, M. ;

Ilic, D. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2007, 374 (03) :1181-1184

[9] The VIMOS VLT Deep Survey:: the faint type-1 AGN sample [J].

Gavignaud, I. ;

Bongiorno, A. ;

Paltani, S. ;

Mathez, G. ;

Zamorani, G. ;

Moller, P. ;

Picat, J. P. ;

Le Brun, V. ;

Marano, B. ;

Le Fevre, O. ;

Bottini, D. ;

Garilli, B. ;

Maccagni, D. ;

Scaramella, R. ;

Scodeggio, M. ;

Tresse, L. ;

Vettolani, G. ;

Zanichelli, A. ;

Adami, C. ;

Arnaboldi, M. ;

Arnouts, S. ;

Bardelli, S. ;

Bolzonella, M. ;

Cappi, A. ;

Charlot, S. ;

Ciliegi, P. ;

Contini, T. ;

Foucaud, S. ;

Franzetti, P. ;

Guzzo, L. ;

Ilbert, O. ;

Iovino, A. ;

McCracken, H. J. ;

Marinoni, C. ;

Mazure, A. ;

Meneux, B. ;

Merighi, R. ;

Pello, R. ;

Pollo, A. ;

Pozzetti, L. ;

Radovich, M. ;

Zucca, E. ;

Bondi, M. ;

Busarello, G. ;

Cucciati, O. ;

de la Torre, S. ;

Gregorini, L. ;

Lamareille, F. ;

Mellier, Y. ;

Merluzzi, P. .

ASTRONOMY & ASTROPHYSICS, 2006, 457 (01) :79-U79

[10] Eddington ratios of faint AGN at intermediate redshift: evidence for a population of half-starved black holes [J].

Gavignaud, I. ;

Wisotzki, L. ;

Bongiorno, A. ;

Paltani, S. ;

Zamorani, G. ;

Moller, P. ;

Le Brun, V. ;

Husemann, B. ;

Lamareille, F. ;

Schramm, M. ;

Le Fevre, O. ;

Bottini, D. ;

Garilli, B. ;

Maccagni, D. ;

Scaramella, R. ;

Scodeggio, M. ;

Tresse, L. ;

Vettolani, G. ;

Zanichelli, A. ;

Adami, C. ;

Arnaboldi, M. ;

Arnouts, S. ;

Bardelli, S. ;

Bolzonella, M. ;

Cappi, A. ;

Charlot, S. ;

Ciliegi, P. ;

Contini, T. ;

Foucaud, S. ;

Franzetti, P. ;

Guzzo, L. ;

Ilbert, O. ;

Iovino, A. ;

McCracken, H. J. ;

Marano, B. ;

Marinoni, C. ;

Mazure, A. ;

Meneux, B. ;

Merighi, R. ;

Pello, R. ;

Pollo, A. ;

Pozzetti, L. ;

Radovich, M. ;

Zucca, E. ;

Bondi, M. ;

Busarello, G. ;

Cucciati, O. ;

de la Torre, S. ;

Gregorini, L. ;

Mellier, Y. .

ASTRONOMY & ASTROPHYSICS, 2008, 492 (03) :637-650

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