The VIMOS VLT Deep Survey: The faint type-1 AGN sample

被引：0

作者：

Gavignaud, I. ^{[1
,2
]}

Bongiorno, A. ^{[3
]}

Paltani, S. ^{[4
,5
]}

Mathez, G. ^{[2
]}

Zamorani, G. ^{[6
]}

Møller, P. ^{[7
]}

Picat, J.P. ^{[2
]}

Le Brun, V. ^{[8
]}

Marano, B. ^{[3
]}

Le Fèvre, O. ^{[8
]}

Bottini, D. ^{[9
]}

Garilli, B. ^{[9
]}

Maccagni, D. ^{[9
]}

Scaramella, R. ^{[10
,11
]}

Scodeggio, M. ^{[9
]}

Tresse, L. ^{[8
]}

Vettolani, G. ^{[10
]}

Zanichelli, A. ^{[10
]}

Adami, C. ^{[8
]}

Arnaboldi, M. ^{[12
]}

Arnouts, S. ^{[8
]}

Bardelli, S. ^{[6
]}

Bolzonella, M. ^{[6
]}

Cappi, A. ^{[6
]}

Charlot, S. ^{[13
,14
]}

Ciliegi, P. ^{[6
]}

Contini, T. ^{[2
]}

Foucaud, S. ^{[9
]}

Franzetti, P. ^{[9
]}

Guzzo, L. ^{[15
]}

Ilbert, O. ^{[3
]}

Iovino, A. ^{[15
]}

McCracken, H.J. ^{[14
,16
]}

Marinoni, C. ^{[18
]}

Mazure, A. ^{[8
]}

Meneux, B. ^{[9
,15
]}

Merighi, R. ^{[6
]}

Pellò, R. ^{[2
]}

Polio, A. ^{[8
]}

Pozzetti, L. ^{[6
]}

Radovich, M. ^{[12
]}

Zucca, E. ^{[6
]}

Bondi, M. ^{[10
]}

Busarello, G. ^{[12
]}

Cucciati, O. ^{[15
,17
]}

De La Torre, S. ^{[8
]}

Gregorini, L. ^{[10
]}

Lamareille, F. ^{[2
]}

Mellier, Y. ^{[14
,16
]}

Merluzzi, P. ^{[12
]}

机构：

[1] Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany

[2] Laboratoire d'Astrophysique de l'Observatoire Midi-Pyrénées (UMR 5572), 14 avenue E. Belin, 31400 Toulouse, France

[3] Università di Bologna, Dipartimento di Astronomia, via Ranzani 1, 40127 Bologna, Italy

[4] Integral Science Data Centre, Ch. d'Écogia 16, 1290 Versoix

[5] Geneva Observatory, Ch. des Maillettes 51, 1290 Sauverny

[6] INAF, Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, Italy

[7] European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany

[8] Laboratoire d'Astrophysique de Marseille, UMR 6110 CNRS, Université de Provence, BP 8, 13376 Marseille Cedex 12, France

[9] IASF, INAF, via Bassini 15, 20133 Milano, Italy

[10] IRA, INAF, via Gobetti 101, 40129 Bologna, Italy

[11] INAF, Osservatorio Astronomico di Roma, via di Frascati 33, 00040 Monte Porzio Catone, Italy

[12] INAF, Osservatorio Astronomico di Capodimonte, via Moiariello 16, 80131 Napoli, Italy

[13] Max Planck Institut fur Astrophysik, 85741 Garching, Germany

[14] Institut d'Astrophysique de Paris, UMR 7095, 98 bis Bvd Arago, 75014 Paris, France

[15] INAF, Osservatorio Astronomico di Brera, via Brera 28, Milan, Italy

[16] Observatoire de Paris, LERMA, 61 Avenue de l'Observatoire, 75014 Paris, France

[17] Universitá di Milano-Bicocca, Dipartimento di Fisica, Piazza delle Scienze 3, 20126 Milano, Italy

[18] Centre de Physique Théorique, UMR 6207 CNRS, Université de Provence, 13288 Marseille, France

来源：

Astronomy and Astrophysics | 1600年 / 457卷 / 01期

关键词：

We present the type-1 active galactic nuclei (AGN) sample extracted from the VIMOS VLT Deep Survey's first observations of 21000 spectra in 1.75 deg 2. This sample; which is purely magnitude-limited and free of morphological or color-selection biases; contains 130 broad-line AGN (BLAGN) spectra with redshift up to 5. Our data are divided into a wide (IAB &le 22.5) and a deep (IAB &le 24) subsample containing 56 and 74 objects; respectively. Because of its depth and selection criteria; this sample is uniquely suited for studying the population of faint type-1 AGN. Our measured surface density (∼472 ± 48 BLAGN per square degree with I AB &le 24) is significantly higher than that of any other optically selected sample of BLAGN with spectroscopic confirmation. By applying a morphological and color analysis to our AGN sample; we find that (1) ∼23% of the AGN brighter than IAB = 22.5 are classified as extended; and this percentage increases to ∼42% for those with z AB = 22.5) in conjuction with a preselection of point-like sources; can miss up to ∼35% of the AGN population. Finally; we present a composite spectrum of our sample of objects. While the continuum shape is very similar to that of the SDSS composite at short wavelengths; it is much redder than that of the SDSS composite at λ ≥ 3000 Å. We interpret this as due to significant contamination from emission of the host galaxies; as expected from the faint absolute magnitudes sampled by our survey. © ESO 2006;

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摘要：

Journal article (JA)

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页码：79 / 90

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[1] The VIMOS VLT Deep Survey:: the faint type-1 AGN sample
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Le Brun, V.
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Maccagni, D.
Scaramella, R.
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Tresse, L.
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Zanichelli, A.
Adami, C.
Arnaboldi, M.
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Bardelli, S.
Bolzonella, M.
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Charlot, S.
Ciliegi, P.
Contini, T.
Foucaud, S.
Franzetti, P.
Guzzo, L.
Ilbert, O.
Iovino, A.
McCracken, H. J.
Marinoni, C.
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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.
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