Skip to Main content Skip to Navigation
Journal articles

Euclid preparation: V. Predicted yield of redshift 7 < z < 9 quasars from the wide survey

R. Barnett * S. J. Warren D. J. Mortlock J.-G. Cuby 1 C. Conselice P. C. Hewett C. J. Willott N. Auricchio A. Balaguera-Antolínez M. Baldi S. Bardelli F. Bellagamba R. Bender A. Biviano 2 D. Bonino E. Bozzo E. Branchini 3 M. Brescia J. Brinchmann C. Burigana S. Camera V. Capobianco C. Carbone 4 J. Carretero C. S. Carvalho 5, 6 F. J. Castander M. Castellano S. Cavuoti A. Cimatti 7 R. Clédassou 8 G. Congedo L. Conversi Y. Copin 9 L. Corcione J. Coupon H. M. Courtois 9 M. Cropper 10 A. da Silva C. A. J. Duncan S. Dusini A. Ealet 11, 9 S. Farrens 12 P. Fosalba S. Fotopoulou N. Fourmanoit 11 M. Frailis M. Fumana S. Galeotta B. Garilli 13 W. Gillard 11 B. R. Gillis 14 J. Graciá-Carpio 15 F. Grupp H. Hoekstra F. Hormuth H. Israel K. Jahnke S. Kermiche 11 M. Kilbinger 16 C. C. Kirkpatrick 17 T. Kitching R. Kohley B. Kubik 18 M. Kunz H. Kurki-Suonio 19 R. Laureijs S. Ligori P. B. Lilje I. Lloro E. Maiorano O. Mansutti O. Marggraf N. Martinet 20 F. Marulli 21 R. Massey N. Mauri E. Medinaceli S. Mei 22 Y. Mellier 23 R. B. Metcalf J. J. Metge 8 G. Meylan M. Moresco 24 L. Moscardini E. Munari C. Neissner S. M. Niemi T. Nutma C. Padilla S. Paltani F. Pasian P. Paykari 10 W. J. Percival 25 V. Pettorino 26 G. Polenta 27 M. Poncet 8 L. Pozzetti 28 F. Raison A. Renzi J. Rhodes H.-W. Rix E. Romelli M. Roncarelli E. Rossetti 29 R. Saglia D. Sapone R. Scaramella P. Schneider 30 V. Scottez 31 A. Secroun 11 S. Serrano G. Sirri L. Stanco F. Sureau 26 P. Tallada-Crespí D. Tavagnacco 2 A. N. Taylor 32 M. Tenti I. Tereno R. Toledo-Moreo F. Torradeflot L. Valenziano 33 T. Vassallo 34 Y. Wang 35 A. Zacchei G. Zamorani J. Zoubian 11 E. Zucca 36
* Corresponding author
1 AMU - Aix Marseille Université
2 OAT - INAF - Osservatorio Astronomico di Trieste
3 DF-Roma3 - Dipartimento de Fisica Roma Tre
4 CNR - Consiglio Nazionale delle Ricerche [Bologna]
5 I2BC - Institut de Biologie Intégrative de la Cellule
6 SEN - Sénescence et stabilité génomique
DBG - Département Biologie des Génomes
7 Dipartimento di Astronomia
8 CNES - Centre National d'Études Spatiales [Toulouse]
9 IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
10 MSSL - Mullard Space Science Laboratory
11 CPPM - Centre de Physique des Particules de Marseille
12 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
13 IASF-MI - Istituto di Astrofisica Spaziale e Fisica Cosmica - Milano
14 ROE - Royal Observatory Edinburgh
15 MPE - Max Planck Institute for Extraterrestrial Physics
16 DAP - Département d'Astrophysique (ex SAP)
17 Department of Physics [Helsinki]
18 IPNL - Institut de Physique Nucléaire de Lyon
19 University of Helsinki
20 IRR - Institut Régional de Médecine Physique et de Réadaptation [Nancy]
21 UNIBO - Alma Mater Studiorum Università di Bologna [Bologna]
22 LERMA (UMR_8112) - Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique
23 IAP - Institut d'Astrophysique de Paris
24 Dipartimento di Fisica e Astronomia [Bologna]
25 University of Waterloo [Waterloo]
26 AIM (UMR_7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation
27 Dipartimento di Fisica, Universita` di Roma Tor Vergata
28 OABO - INAF - Osservatorio Astronomico di Bologna
29 DSA3 - Department of Agricultural, Food and Environmental Sciences, University of Perugia
30 Department of Biochemistry [Lausanne]
31 IAP - Institut d'Astrophysique de Paris
32 DEMR, ONERA, Université Paris Saclay (COmUE) [Palaiseau]
33 ARENA - Antarctic Research a European Network for Astrophysics
34 BMBI - Biomécanique et Bioingénierie
35 Continental Dynamics Laboratory [CAGS Beijing]
CAGS - Institute of Geology [CAGS Beijing]
36 Oncology Institute of Southern Switzerland
Abstract : We provide predictions of the yield of 7 <  z <  9 quasars from the Euclid wide survey, updating the calculation presented in the Euclid Red Book in several ways. We account for revisions to the Euclid near-infrared filter wavelengths; we adopt steeper rates of decline of the quasar luminosity function (QLF; $\Phi$) with redshift, $\Phi$ ∝ 10$^{k(z−6)}$, $k$ = −0.72, and a further steeper rate of decline, $k$ = −0.92; we use better models of the contaminating populations (MLT dwarfs and compact early-type galaxies); and we make use of an improved Bayesian selection method, compared to the colour cuts used for the Red Book calculation, allowing the identification of fainter quasars, down to $J_{AB}$ $\sim$23. Quasars at z >  8 may be selected from $Euclid\ OYJH$ photometry alone, but selection over the redshift interval 7 <  z <  8 is greatly improved by the addition of z-band data from, e.g., Pan-STARRS and LSST. We calculate predicted quasar yields for the assumed values of the rate of decline of the QLF beyond z = 6. If the decline of the QLF accelerates beyond z = 6, with $k$ = −0.92, Euclid should nevertheless find over 100 quasars with 7.0 <  z <  7.5, and $\sim$25 quasars beyond the current record of z = 7.5, including $\sim$8 beyond z = 8.0. The first Euclid quasars at z >  7.5 should be found in the DR1 data release, expected in 2024. It will be possible to determine the bright-end slope of the QLF, 7 <  z <  8, $M_{1450}$ <  −25, using 8 m class telescopes to confirm candidates, but follow-up with JWST or E-ELT will be required to measure the faint-end slope. Contamination of the candidate lists is predicted to be modest even at $J_{AB}$$\sim$ 23. The precision with which k can be determined over 7 <  z <  8 depends on the value of $k$, but assuming k = −0.72 it can be measured to a 1$\sigma$ uncertainty of 0.07.
Keywords : quasars: general methods: statistical surveys
Document type :
Journal articles
Complete list of metadatas

Cited literature [115 references]  Display  Hide  Download
https://hal-cea.archives-ouvertes.fr/cea-02334278
Contributor : Edp Sciences <>
Submitted on : Friday, October 25, 2019 - 9:40:34 PM
Last modification on : Tuesday, December 8, 2020 - 3:43:19 AM

File

Vignette du document
aa36427-19.pdf
Publication funded by an institution

Identifiers

Collections

CEA | IP2I | UNIV-COMPIEGNE | IRFU-SAP | IRFU-AIM | UNIV-CERGY | CNRS | CEA-UPSAY | UNIV-LYON1 | DSM-IRFU | IAP | INSU | CPPM | IN2P3 | I2BC | CEA-DRF | OBSPM | SBIGEM | UNIV-AMU | SORBONNE-UNIVERSITE | UNIV-PARIS7 | SU-SCIENCES | I2BC-SACLAY | JOLIOT | USPC | ONERA | UDL | UNIV-PARIS | COSMOLOGIE | UP-SCIENCES | PSL | SU-TI

Citation

R. Barnett, S. J. Warren, D. J. Mortlock, J.-G. Cuby, C. Conselice, et al.. Euclid preparation: V. Predicted yield of redshift 7 < z < 9 quasars from the wide survey. Astronomy and Astrophysics - A&A, EDP Sciences, 2019, 631, pp.A85. ⟨10.1051/0004-6361/201936427⟩. ⟨cea-02334278⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

421

Files downloads

740