2022A&A...662A..92E

Query : 2022A&A...662A..92E

2022A&A...662A..92E - Astronomy and Astrophysics, volume 662A92-92 (2022/6-1)

Euclid preparation. XVIII. The NISP photometric system.

EUCLID COLLABORATION, SCHIRMER M., JAHNKE K., SEIDEL G., AUSSEL H., BODENDORF C., GRUPP F., HORMUTH F., WACHTER S., APPLETON P.N., BARBIER R., BRINCHMANN J., CARRASCO J.M., CASTANDER F.J., COUPON J., DE PAOLIS F., FRANCO A., GANGA K., HUDELOT P., JULLO E., LANCON A., NUCITA A.A., PALTANI S., SMADJA G., STRAFELLA F., VENANCIO L.M.G., WEILER M., AMARA A., AUPHAN T., AURICCHIO N., BALESTRA A., BENDER R., BONINO D., BRANCHINI E., BRESCIA M., CAPOBIANCO V., CARBONE C., CARRETERO J., CASAS R., CASTELLANO M., CAVUOTI S., CIMATTI A., CLEDASSOU R., CONGEDO G., CONSELICE C.J., CONVERSI L., COPIN Y., CORCIONE L., COSTILLE A., COURBIN F., DA SILVA A., DEGAUDENZI H., DOUSPIS M., DUBATH F., DUPAC X., DUSINI S., EALET A., FARRENS S., FERRIOL S., FOSALBA P., FRAILIS M., FRANCESCHI E., FRANZETTI P., FUMANA M., GARILLI B., GILLARD W., GILLIS B., GIOCOLI C., GRAZIAN A., GUZZO L., HAUGAN S.V.H., HOEKSTRA H., HOLMES W., HORNSTRUP A., KUMMEL M., KERMICHE S., KIESSLING A., KILBINGER M., KITCHING T., KOHLEY R., KUNZ M., KURKI-SUONIO H., LAUREIJS R., LIGORI S., LILJE P.B., LLORO I., MACIASZEK T., MAIORANO E., MANSUTTI O., MARGGRAF O., MARKOVIC K., MARULLI F., MASSEY R., MAUROGORDATO S., MELLIER Y., MENEGHETTI M., MERLIN E., MEYLAN G., MORESCO M., MOSCARDINI L., MUNARI E., NAKAJIMA R., NICHOL R.C., NIEMI S.M., PADILLA C., PASIAN F., PEDERSEN K., PERCIVAL W.J., PETTORINO V., PIRES S., PONCET M., POPA L., POZZETTI L., PRIETO E., RAISON F., RHODES J., RIX H.-W., RONCARELLI M., ROSSETTI E., SAGLIA R., SARTORIS B., SCARAMELLA R., SCHNEIDER P., SECROUN A., SERRANO S., SIRIGNANO C., SIRRI G., STANCO L., TALLADA-CRESPI P., TAYLOR A.N., TEPLITZ H.I., TERENO I., TOLEDO-MOREO R., TORRADEFLOT F., TRIFOGLIO M., VALENTIJN E.A., VALENZIANO L., WANG Y., WELLER J., ZAMORANI G., ZOUBIAN J., ANDREON S., BARDELLI S., BOUCAUD A., CAMERA S., FARINELLI R., GRACIA-CARPIO J., MAINO D., MEDINACELI E., MEI S., MORISSET N., POLENTA G., RENZI A., ROMELLI E., TENTI M., VASSALLO T., ZACCHEI A., ZUCCA E., BACCIGALUPI C., BALAGUERA-ANTOLINEZ A., BIVIANO A., BLANCHARD A., BORGANI S., BOZZO E., BURIGANA C., CABANAC R., CAPPI A., CARVALHO C.S., CASAS S., CASTIGNANI G., COLODRO-CONDE C., COORAY A.R., COURTOIS H.M., CROCCE M., CUBY J.-G., DAVINI S., DE LA TORRE S., DI FERDINANDO D., ESCARTIN J.A., FARINA M., FERREIRA P.G., FINELLI F., FOTOPOULOU S., GALEOTTA S., GARCIA-BELLIDO J., GAZTANAGA E., GEORGE K., GOZALIASL G., HOOK I.M., ILIC S., KANSAL V., KASHLINSKY A., KEIHANEN E., KIRKPATRICK C.C., LINDHOLM V., MAINETTI G., MAOLI R., MARTINELLI M., MARTINET N., MATURI M., MAURI N., McCRACKEN H.J., METCALF R.B., MONACO P., MORGANTE G., NIGHTINGALE J., PATRIZII L., PEEL A., POPA V., PORCIANI C., POTTER D., REIMBERG P., RICCIO G., SANCHEZ A.G., SAPONE D., SCOTTEZ V., SEFUSATTI E., TEYSSIER R., TUTUSAUS I., VALIERI C., VALIVIITA J., VIEL M. and HILDEBRANDT H.

Abstract (from CDS):

Euclid will be the first space mission to survey most of the extragalactic sky in the 0.95-2.02 um range, to a 5 σ point-source median depth of 24.4 AB mag. This unique photometric dataset will find wide use beyond Euclid's core science. In this paper, we present accurate computations of the Euclid Y_E, J_E, and H_E passbands used by the Near-Infrared Spectrometer and Photometer (NISP), and the associated photometric system. We pay particular attention to passband variations in the field of view, accounting for, among other factors, spatially variable filter transmission and variations in the angle of incidence on the filter substrate using optical ray tracing. The response curves' cut-on and cut-off wavelengths - and their variation in the field of view - are determined with ∼0.8 nm accuracy, essential for the photometric redshift accuracy required by Euclid. After computing the photometric zero points in the AB mag system, we present linear transformations from and to common ground-based near-infrared photometric systems, for normal stars, red and brown dwarfs, and galaxies separately. A Python tool to compute accurate magnitudes for arbitrary passbands and spectral energy distributions is provided. We discuss various factors, from space weathering to material outgassing, that may slowly alter Euclid's spectral response. At the absolute flux scale, the Euclid in-flight calibration program connects the NISP photometric system to Hubble Space Telescope spectrophotometric white dwarf standards; at the relative flux scale, the chromatic evolution of the response is tracked at the milli-mag level. In this way, we establish an accurate photometric system that is fully controlled throughout Euclid's lifetime.

Abstract Copyright: © Euclid Collaboration 2022

Journal keyword(s): instrumentation: photometers - space vehicles: instruments

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	NAME NEP	reg	18 00 00.000	+66 33 38.55						~	430	0

Query : 2022A&A...662A..92E

Basic data :

NAME NEP -- Region defined in the Sky
Other object types:	`reg ()`
ICRS coord. (ep=J2000) :	`18 00 00.000 +66 33 38.55 [ ] D ~`
FK4 coord. (ep=B1950 eq=1950) :	`18 00 00.300 +66 33 38.48 [ ]`
Gal coord. (ep=J2000) :	`096.383977 +29.811440 [ ]`

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NAME NEP NAME North Ecliptic Pole NAME Northern Ecliptic Pole

References (430 between 1850 and 2026) (Total 430)
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