2015MNRAS.454.3952R

Query : 2015MNRAS.454.3952R

2015MNRAS.454.3952R - Mon. Not. R. Astron. Soc., 454, 3952-3961 (2015/December-3)

DES J0454-4448: discovery of the first luminous z ≥ 6 quasar from the Dark Energy Survey.

REED S.L., McMAHON R.G., BANERJI M., BECKER G.D., GONZALEZ-SOLARES E., MARTINI P., OSTROVSKI F., RAUCH M., ABBOTT T., ABDALLA F.B., ALLAM S., BENOIT-LEVY A., BERTIN E., BUCKLEY-GEER E., BURKE D., CARNERO ROSELL A., DA COSTA L.N., D'ANDREA C., DEPOY D.L., DESAI S., DIEHL H.T., DOEL P., CUNHA C.E., ESTRADA J., EVRARD A.E., FAUSTI NETO A., FINLEY D.A., FOSALBA P., FRIEMAN J., GRUEN D., HONSCHEID K., JAMES D., KENT S., KUEHN K., KUROPATKIN N., LAHAV O., MAIA M.A.G., MAKLER M., MARSHALL J., MERRITT K., MIQUEL R., MOHR J., NORD B., OGANDO R., PLAZAS A., ROMER K., ROODMAN A., RYKOFF E., SAKO M., SANCHEZ E., SANTIAGO B., SCHUBNELL M., SEVILLA I., SMITH C., SOARES-SANTOS M., SUCHYTA E., SWANSON M.E.C., TARLE G., THOMAS D., TUCKER D., WALKER A. and WECHSLER R.H.

Abstract (from CDS):

We present the first results of a survey for high-redshift, z ≥ 6, quasars using izY multicolour photometric observations from the Dark Energy Survey (DES). Here we report the discovery and spectroscopic confirmation of the zAB, YAB = 20.2, 20.2 (M1450 = -26.5) quasar DES J0454-4448 with a redshift of z = 6.09±0.02 based on the onset of the Ly α forest and an H i near zone size of 4.1_-1.2^+1.1 proper Mpc. The quasar was selected as an i-band drop out with i-z = 2.46 and zAB < 21.5 from an area of ∼ 300 deg2. It is the brightest of our 43 candidates and was identified for spectroscopic follow-up solely based on the DES i-z and z-Y colours. The quasar is detected by WISE and has W1AB = 19.68. The discovery of one spectroscopically confirmed quasar with 5.7 < z < 6.5 and zAB ≤ 20.2 is consistent with recent determinations of the luminosity function at z ∼ 6. DES when completed will have imaged ∼ 5000 deg2 to YAB = 23.0 (5σ point source) and we expect to discover 50-100 new quasars with z > 6 including 3-10 with z > 7 dramatically increasing the numbers of quasars currently known that are suitable for detailed studies.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): galaxies: active - galaxies: formation - galaxies: high-redshift - quasars: individual: DES J0454-4448 - dark ages, reionization, first stars

Nomenclature: [RMB2015] DES J0454-4448 N=1.

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 VDES J0454-4448 QSO 04 54 01.78800 -44 48 31.1040           ~ 21 0

Query : 2015MNRAS.454.3952R

Basic data :
VDES J0454-4448 -- Quasar
Other object types: otypes_help 		QSO (2015MNRAS,VDES,...), MIR (WISE)
ICRS coord. (ep=J2000) : 		04 54 01.78800 -44 48 31.1040 (Optical) [ ] C 2020MNRAS.494..789R
FK4 coord. (ep=B1950 eq=1950) : 		04 52 31.72509 -44 53 18.9335 [ ]
Gal coord. (ep=J2000) : 		250.08821150 -39.11314572 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 288130 [~] / z(spectroscopic) 6.100 [~] / cz 1828734 [~]
   (Opt) D 2015MNRAS.454.3952R
Fluxes (5) :
J (AB) 20.197 [0.0537] C 2020MNRAS.494..789R
K (AB) 20.077 [0.1366] D 2020MNRAS.494..789R
r (AB) 25.30 [0.25] D 2015MNRAS.454.3952R
i (AB) 22.93 [0.04] C 2024MNRAS.530..870B
z (AB) 20.20 [0.01] C 2015MNRAS.454.3952R
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Identifiers (3) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

VDES J0454-4448 WISE J045401.81-444830.8 [RMB2015] DES J0454-4448

References (21 between 1850 and 2026) (Total 21)
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WISE J045401.81-444830.8

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