2022A&A...662A.112E

Query : 2022A&A...662A.112E

2022A&A...662A.112E - Astronomy and Astrophysics, volume 662A112-112 (2022/6-1)

Euclid preparation. I. The Euclid Wide Survey.

EUCLID COLLABORATION, SCARAMELLA R., AMIAUX J., MELLIER Y., BURIGANA C., CARVALHO C.S., CUILLANDRE J.-C., DA SILVA A., DEROSA A., DINIS J., MAIORANO E., MARIS M., TERENO I., LAUREIJS R., BOENKE T., BUENADICHA G., DUPAC X., GASPAR VENANCIO L.M., GOMEZ-ALVAREZ P., HOAR J., LORENZO ALVAREZ J., RACCA G.D., SAAVEDRA-CRIADO G., SCHWARTZ J., VAVREK R., SCHIRMER M., AUSSEL H., AZZOLLINI R., CARDONE V.F., CROPPER M., EALET A., GARILLI B., GILLARD W., GRANETT B.R., GUZZO L., HOEKSTRA H., JAHNKE K., KITCHING T., MACIASZEK T., MENEGHETTI M., MILLER L., NAKAJIMA R., NIEMI S.M., PASIAN F., PERCIVAL W.J., POTTINGER S., SAUVAGE M., SCODEGGIO M., WACHTER S., ZACCHEI A., AGHANIM N., AMARA A., AUPHAN T., AURICCHIO N., AWAN S., BALESTRA A., BENDER R., BODENDORF C., BONINO D., BRANCHINI E., BRAU-NOGUE S., BRESCIA M., CANDINI G.P., CAPOBIANCO V., CARBONE C., CARLBERG R.G., CARRETERO J., CASAS R., CASTANDER F.J., CASTELLANO M., CAVUOTI S., CIMATTI A., CLEDASSOU R., CONGEDO G., CONSELICE C.J., CONVERSI L., COPIN Y., CORCIONE L., COSTILLE A., COURBIN F., DEGAUDENZI H., DOUSPIS M., DUBATH F., DUNCAN C.A.J., DUSINI S., FARRENS S., FERRIOL S., FOSALBA P., FOURMANOIT N., FRAILIS M., FRANCESCHI E., FRANZETTI P., FUMANA M., GILLIS B., GIOCOLI C., GRAZIAN A., GRUPP F., HAUGAN S.V.H., HOLMES W., HORMUTH F., HUDELOT P., KERMICHE S., KIESSLING A., KILBINGER M., KOHLEY R., KUBIK B., KUMMEL M., KUNZ M., KURKI-SUONIO H., LAHAV O., LIGORI S., LILJE P.B., LLORO I., MANSUTTI O., MARGGRAF O., MARKOVIC K., MARULLI F., MASSEY R., MAUROGORDATO S., MELCHIOR M., MERLIN E., MEYLAN G., MOHR J.J., MORESCO M., MORIN B., MOSCARDINI L., MUNARI E., NICHOL R.C., PADILLA C., PALTANI S., PEACOCK J., PEDERSEN K., PETTORINO V., PIRES S., PONCET M., POPA L., POZZETTI L., RAISON F., REBOLO R., RHODES J., RIX H.-W., RONCARELLI M., ROSSETTI E., SAGLIA R., SCHNEIDER P., SCHRABBACK T., SECROUN A., SEIDEL G., SERRANO S., SIRIGNANO C., SIRRI G., SKOTTFELT J., STANCO L., STARCK J.L., TALLADA-CRESPI P., TAVAGNACCO D., TAYLOR A.N., TEPLITZ H.I., TOLEDO-MOREO R., TORRADEFLOT F., TRIFOGLIO M., VALENTIJN E.A., VALENZIANO L., VERDOES KLEIJN G.A., WANG Y., WELIKALA N., WELLER J., WETZSTEIN M., ZAMORANI G., ZOUBIAN J., ANDREON S., BALDI M., BARDELLI S., BOUCAUD A., CAMERA S., DI FERDINANDO D., FABBIAN G., FARINELLI R., GALEOTTA S., GRACIA-CARPIO J., MAINO D., MEDINACELI E., MEI S., NEISSNER C., POLENTA G., RENZI A., ROMELLI E., ROSSET C., SUREAU F., TENTI M., VASSALLO T., ZUCCA E., BACCIGALUPI C., BALAGUERA-ANTOLINEZ A., BATTAGLIA P., BIVIANO A., BORGANI S., BOZZO E., CABANAC R., CAPPI A., CASAS S., CASTIGNANI G., COLODRO-CONDE C., COUPON J., COURTOIS H.M., CUBY J., DE LA TORRE S., DESAI S., DOLE H., FABRICIUS M., FARINA M., FERREIRA P.G., FINELLI F., FLOSE-REIMBERG P., FOTOPOULOU S., GANGA K., GOZALIASL G., HOOK I.M., KEIHANEN E., KIRKPATRICK C.C., LIEBING P., LINDHOLM V., MAINETTI G., MARTINELLI M., MARTINET N., MATURI M., McCRACKEN H.J., METCALF R.B., MORGANTE G., NIGHTINGALE J., NUCITA A., PATRIZII L., POTTER D., RICCIO G., SANCHEZ A.G., SAPONE D., SCHEWTSCHENKO J.A., SCHULTHEIS M., SCOTTEZ V., TEYSSIER R., TUTUSAUS I., VALIVIITA J., VIEL M., VRIEND W. and WHITTAKER L.

Abstract (from CDS):

Euclid is a mission of the European Space Agency that is designed to constrain the properties of dark energy and gravity via weak gravitational lensing and galaxy clustering. It will carry out a wide area imaging and spectroscopy survey (the Euclid Wide Survey: EWS) in visible and near-infrared bands, covering approximately 15 000 deg2 of extragalactic sky in six years. The wide-field telescope and instruments are optimised for pristine point spread function and reduced stray light, producing very crisp images. This paper presents the building of the Euclid reference survey: the sequence of pointings of EWS, deep fields, and calibration fields, as well as spacecraft movements followed by Euclid as it operates in a step-and-stare mode from its orbit around the Lagrange point L2. Each EWS pointing has four dithered frames; we simulated the dither pattern at the pixel level to analyse the effective coverage. We used up-to-date models for the sky background to define the Euclid region-of-interest (RoI). The building of the reference survey is highly constrained from calibration cadences, spacecraft constraints, and background levels; synergies with ground-based coverage were also considered. Via purposely built software, we first generated a schedule for the calibrations and deep fields observations. On a second stage, the RoI was tiled and scheduled with EWS observations, using an algorithm optimised to prioritise the best sky areas, produce a compact coverage, and ensure thermal stability. The result is the optimised reference survey RSD_2021A, which fulfils all constraints and is a good proxy for the final solution. The current EWS covers ≃14 500 deg2. The limiting AB magnitudes (5σ point-like source) achieved in its footprint are estimated to be 26.2 (visible band IE) and 24.5 (for near infrared bands YE, JE, HE); for spectroscopy, the Hα line flux limit is 2 x 10–16 erg–1 cm–2 s–1 at 1600 nm; and for diffuse emission, the surface brightness limits are 29.8 (visible band) and 28.4 (near infrared bands) mag arcsec–2.

Abstract Copyright: © ESO 2022

Journal keyword(s): space vehicles - surveys - methods: numerical - dark energy - dark matter

Simbad objects: 18

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Number of rows : 18
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 NAME SXDSF reg 02 18 00 -05 00.0           ~ 237 1
3 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
4 NAME Extended Chandra Deep Field South reg 03 32 30.0 -27 48 20           ~ 862 0
5 NAME Hubble Ultra Deep Field reg 03 32 39.0 -27 47 29           ~ 1900 0
6 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
7 V* R Dor AB* 04 36 45.59127 -62 04 37.7974 7.84 6.98 5.40 2.71 -0.44 M8III:e 376 0
8 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
9 NAME HYA SUPERCL SCG 08 57.9 +03 10           ~ 204 0
10 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
11 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
12 NAME GOODS-N Field reg 12 36 55.0 +62 14 15           ~ 1364 1
13 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
14 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
15 NAME Extended Groth Strip reg 14 19 +52.8           ~ 1023 0
16 NAME NEP reg 18 00 00.000 +66 33 38.55           ~ 430 0
17 NAME Local Group GrG ~ ~           ~ 9325 0
18 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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