2023MNRAS.523.1399D

Query : 2023MNRAS.523.1399D

2023MNRAS.523.1399D - Mon. Not. R. Astron. Soc., 523, 1399-1420 (2023/July-3)

XQR-30: The ultimate XSHOOTER quasar sample at the reionization epoch.

D'ODORICO V., BANADOS E., BECKER G.D., BISCHETTI M., BOSMAN S.E.I., CUPANI G., DAVIES R., FARINA E.P., FERRARA A., FERUGLIO C., MAZZUCCHELLI C., RYAN-WEBER E., SCHINDLER J.-T., SODINI A., VENEMANS B.P., WALTER F., CHEN H., LAI S., ZHU Y., BIAN F., CAMPO S., CARNIANI S., CRISTIANI S., DAVIES F., DECARLI R., DRAKE A., EILERS A.-C., FAN X., GAIKWAD P., GALLERANI S., GREIG B., HAEHNELT M.G., HENNAWI J., KEATING L., KULKARNI G., MESINGER A., MEYER R.A., NEELEMAN M., ONOUE M., PALLOTTINI A., QIN Y., ROJAS-RUIZ S., SATYAVOLU S., SEBASTIAN A., TRIPODI R., WANG F., WOLFSON M., YANG J. and ZANCHETTIN M.V.

Abstract (from CDS):

The final phase of the reionization process can be probed by rest-frame UV absorption spectra of quasars at z ≳ 6, shedding light on the properties of the diffuse intergalactic medium within the first Gyr of the Universe. The ESO Large Programme 'XQR-30: the ultimate XSHOOTER legacy survey of quasars at z ≃ 5.8-6.6' dedicated ∼250 h of observations at the VLT to create a homogeneous and high-quality sample of spectra of 30 luminous quasars at z ∼ 6, covering the rest wavelength range from the Lyman limit to beyond the Mg II emission. Twelve quasar spectra of similar quality from the XSHOOTER archive were added to form the enlarged XQR-30 sample, corresponding to a total of ∼350 h of on-source exposure time. The median effective resolving power of the 42 spectra is R ≃ 11 400 and 9800 in the VIS and NIR arm, respectively. The signal-to-noise ratio per 10 km s–1 pixel ranges from ∼11 to 114 at λ ≃ 1285 Å rest frame, with a median value of ∼29. We describe the observations, data reduction, and analysis of the spectra, together with some first results based on the E-XQR-30 sample. New photometry in the H and K bands are provided for the XQR-30 quasars, together with composite spectra whose characteristics reflect the large absolute magnitudes of the sample. The composite and the reduced spectra are released to the community through a public repository, and will enable a range of studies addressing outstanding questions regarding the first Gyr of the Universe.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): galaxies: high-redshift - intergalactic medium - quasars: absorption lines - quasars: emission lines - dark ages, reionization, first stars

Simbad objects: 42

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Number of rows : 42
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 SDSS J002806.57+045725.3 QSO 00 28 06.568 +04 57 25.39           ~ 53 0
2 SDSS J003856.52-102553.8 QSO 00 38 56.519 -10 25 53.97           ~ 32 0
3 SDSS J010013.02+280225.8 QSO 01 00 13.0246669824 +28 02 25.791716364           ~ 206 0
4 SDSS J013201.71-021603.2 QSO 01 32 01.71148560 -02 16 03.2107440           ~ 13 0
5 PSO J025.2376-11.6831 QSO 01 40 57.03 -11 40 59.5           ~ 20 0
6 QSO J0142-3327 QSO 01 42 43.720 -33 27 45.61           ~ 49 0
7 SDSS J014837.63+060020.0 QSO 01 48 37.639 +06 00 20.01           ~ 86 0
8 PSO J029.5172-29.0886 QSO 01 58 04.14 -29 05 19.2           ~ 20 0
9 VST-ATLAS J015957.96-363356.8 QSO 01 59 57.97150 -36 33 56.6028           ~ 29 0
10 VDES J0224-4711 QSO 02 24 26.54 -47 11 29.4           ~ 50 0
11 QSO J0226+0302 QSO 02 26 01.873 +03 02 59.24           ~ 89 0
12 PSO J060.5528+24.8567 QSO 04 02 12.69468 +24 51 24.4284           ~ 30 0
13 VDES J0408-5632 QSO 04 08 19.23 -56 32 28.8           ~ 21 0
14 PSO J065.4085-26.9543 QSO 04 21 38.050 -26 57 15.72           ~ 39 0
15 PSO J065.9589+01.7235 QSO 04 23 50.14129920 +01 43 24.7318320           ~ 15 0
16 [FWY2019] UHS J043947.08+163415.7 QSO 04 39 47.08632 +16 34 16.0140           ~ 59 0
17 PSO J089.9394-15.5833 QSO 05 59 45.46670 -15 35 00.2022           ~ 11 0
18 PSO J108.4429+08.9257 QSO 07 13 46.305984 +08 55 32.65291           ~ 18 0
19 SDSS J081827.40+172251.8 QSO 08 18 27.399 +17 22 51.83   25.14 24.42     ~ 81 0
20 SDSS J083643.85+005453.3 QSO 08 36 43.8598536120 +00 54 53.233681320   26.19 24.17     ~ 170 0
21 SDSS J084229.43+121850.4 QSO 08 42 29.438 +12 18 50.47           ~ 88 0
22 QSO J0923+0402 QSO 09 23 47.12 +04 02 54.4           ~ 26 0
23 SDSS J092721.82+200123.7 QSO 09 27 21.821 +20 01 23.63   24.97 23.89     ~ 79 0
24 SDSS J103027.09+052455.0 QSO 10 30 27.092 +05 24 55.02   26.15 25.44     ~ 303 0
25 PSO J158.6937-14.4210 QSO 10 34 46.49940000 -14 25 15.8924280           ~ 41 0
26 QSO J1212+0505 QSO 12 12 26.97241440 +05 05 33.5606640           ~ 53 0
27 PSO J183.2992-12.7676 QSO 12 13 11.80560 -12 46 03.4464           ~ 24 0
28 SDSS J130608.25+035626.3 QSO 13 06 08.259 +03 56 26.19   25.59 24.81     ~ 176 0
29 SDSS J131911.29+095051.3 QSO 13 19 11.291 +09 50 51.49           ~ 110 0
30 PSO J217.0891-16.0453 QSO 14 28 21.39187 -16 02 43.2990           ~ 33 0
31 PSO J217.9184-07.4120 QSO 14 31 40.447992 -07 24 43.46801           ~ 19 0
32 CFHQS J150941-174926 QSO 15 09 41.77920 -17 49 26.7996           ~ 82 0
33 QSO J1526-2050 QSO 15 26 37.844 -20 50 00.88           ~ 78 0
34 DELS J153532.87+194320.1 QSO 15 35 32.86992 +19 43 20.1000           ~ 23 0
35 PSO J239.7124-07.4027 QSO 15 58 50.990616 -07 24 09.59087           ~ 30 0
36 PSO J242.4396-12.9817 QSO 16 09 45.53040 -12 58 54.1095           ~ 20 0
37 PSO J308.4829-27.6485 QSO 20 33 55.91280 -27 38 54.6000           ~ 21 0
38 QSO J2132+1217 QSO 21 32 33.178 +12 17 55.07           ~ 48 0
39 QSO J2211-3206 QSO 22 11 12.42000 -32 06 12.8002           ~ 30 0
40 VDES J2250-5015 QSO 22 50 02.01 -50 15 42.2           ~ 11 0
41 SDSS J231038.88+185519.7 QSO 23 10 38.888 +18 55 19.72           ~ 107 0
42 SDSS J235632.44-062259.2 QSO 23 56 32.452 -06 22 59.31           ~ 52 0

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