Astron. Astrophys. Suppl. Ser. 141, 313-317
P. Fouqué 1,2 - L. Chevallier 2 - M. Cohen 3 - E. Galliano 2 - C. Loup 4 - C. Alard 15 - B. de Batz 5 - E. Bertin 4 - J. Borsenberger4 - M.R. Cioni 6 - E. Copet 1 - M. Dennefeld 4 - S. Derriere 7 - E. Deul 6 - P.-A. Duc 8 - D. Egret 7 - N. Epchtein 9 - T. Forveille 10 - F. Garzón 16 - H.J. Habing 6 - J. Hron 11 - S. Kimeswenger 12 - F. Lacombe 1 - T. Le Bertre 13 - G.A. Mamon 4,14 - A. Omont 4 - G. Paturel 17 - S. Pau 1 - P. Persi 18 - A.C. Robin 19 - D. Rouan 1 - M. Schultheis 4 - G. Simon 15 - D. Tiphène 1 - I. Vauglin 17 - S.J. Wagner 20
Send offprint request: P. Fouqué
1 - DESPA, Observatoire de Paris, 5 place J. Janssen, F-92195 Meudon
Cedex, France
2 - European Southern Observatory, Casilla 19001, Santiago 19, Chile
3 - Radio Astronomy Laboratory, 601 Campbell Hall, University of
California, Berkeley, CA 94720, U.S.A.
4 - Institut d'Astrophysique de Paris, 98 bis Bd. Arago, F-75014
Paris, France
5 - DASGAL, Observatoire de Paris, 5 place J. Janssen, F-92195 Meudon
Cedex, France
6 - Leiden Observatory, University of Leiden, P.O. Box 9513, 2300 RA
Leiden, The Netherlands
7 - CDS, Observatoire Astronomique de Strasbourg, UMR 7550, 11 rue de
l'Université, F-67000 Strasbourg, France
8 - CEA, DSM, DAPNIA, Centre d'Études de Saclay, F-91191 Gif-sur-Yvette
Cedex, France
9 - Observatoire de la Côte d'Azur, Département Fresnel, F-06304
Nice Cedex, France
10 - Observatoire de Grenoble, 414 rue de la Piscine, Domaine
Universitaire de Saint Martin d'Hères, F-38041 Grenoble, France
11 - Institut für Astronomie der Universität Wien,
Türkenschanzstrasse 17, A-1180 Wien, Austria
12 - Institut für Astronomie, Innsbruck University, A-6020
Innsbruck, Austria
13 - DEMIRM, Observatoire de Paris, 61 Av. de l'Observatoire, F-75014
Paris, France
14 - DAEC, Observatoire de Paris, 5 place J. Janssen, F-92195 Meudon
Cedex, France
15 - DASGAL, Observatoire de Paris, 61 Av. de l'Observatoire, F-75014
Paris, France
16 - Instituto de Astrofísica de Canarias, E-38200 La Laguna,
Tenerife, Spain
17 - CRAL, Observatoire de Lyon, F-69561 Saint-Genis Laval Cedex,
France
18 - Istituto di Astrofisica Spaziale, CNR, C.P. 67, I-00044 Frascati,
Italy
19 - Observatoire de Besançon, BP. 1615, F-25010 Besançon
Cedex, France
20 - Landessternwarte Heidelberg, Königstuhl, D-69117 Heidelberg,
Germany
e-mail: pfouque@eso.org
Received June 24; accepted October 20, 1999
An absolute calibration of the DENIS photometric system is presented. It includes the determination of the overall transmission profiles in the 3 bands, namely i, J and , combining contributions from atmosphere, telescope mirrors, instrument lenses and dichroics, filters, and detectors. From these normalized profiles, isophotal and effective wavelengths are computed, using the same synthetic Vega spectrum as that used to support the absolute calibration of many other ground-based and spaceborne photometric systems. Flux densities at zero magnitude are derived and integrated to give in-band fluxes, which are used to compute theoretical zero-points and compare them to observed ones, yielding estimates of the overall throughput of the whole system.
Key words: surveys -- infrared: general -- instrumentation: miscellaneous
Copyright The European Southern Observatory (ESO)