Astron. Astrophys. Suppl. Ser. 137, 75-81

ESO Imaging Survey

IV. Multicolor analysis of point-like objects toward the South Galactic Pole

S. Zaggia^1,2 - I. Hook¹ - R. Mendez^1,3 - L. da Costa¹ - L.F. Olsen^1,4 - M. Nonino^1,5 - A. Wicenec¹ - C. Benoist^1,6 - E. Deul^1,7 - T. Erben^1,8 - M.D. Guarnieri^1,9 - R. Hook¹⁰ - I. Prandoni^1,11 - M. Scodeggio¹ - R. Slijkhuis^1,7 - R. Wichmann^1,12

Send offprint request: M. Nonino

1 - European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching b. München, Germany
2 - Osservatorio Astronomico di Capodimonte, via Moiariello 15, I-80131 Napoli, Italy
3 - Cerro Tololo Inter-American Observatory, Casilla 603, La Serena, Chile
4 - Astronomisk Observatorium, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark
5 - Osservatorio Astronomico di Trieste, Via G.B. Tiepolo 11, I-31144 Trieste, Italy
6 - DAEC, Observatoire de Paris-Meudon, 5 Pl. J. Janssen, F-92195 Meudon Cedex, France
7 - Leiden Observatory, P.O. Box 9513, 2300 RA Leiden, The Netherlands
8 - Max-Planck Institut für Astrophysik, Postfach 1523, D-85748 Garching b. München, Germany
9 - Osservatorio Astronomico di Pino Torinese, Strada Osservatorio 20, I-10025 Torino, Italy
10 - Space Telescope - European Coordinating Facility, Karl-Schwarzschild-Str. 2, D-85748 Garching b. München, Germany
11 - Istituto di Radioastronomia del CNR, Via Gobetti 101, I-40129 Bologna, Italy
12 - IUCAA, Post Bag 4, Ganeshkhind, Pune 411007, India

Received July 17; accepted December 16, 1998

Abstract:

This paper presents preliminary lists of potentially interesting point-like sources extracted from multicolor data obtained for a 1.7 square degree region near the South Galactic Pole. The region has been covered by the ESO Imaging Survey (EIS) in B, V and I and offers a unique combination of area and depth. These lists, containing a total of 330 objects nearly all brighter than $I \sim 21.5$, over 1.27 square degrees (after removing some bad regions), are by-products of the process of verification and quality control of the object catalogs being produced. Among the color selected targets are candidate very low mass stars/brown dwarfs (54), white-dwarfs (32), and quasars (244). In addition, a probable fast moving asteroid was identified. The objects presented here are natural candidates for follow-up spectroscopic observations and illustrate the usefulness of the EIS data for a broad range of science and for providing possible samples for the first year of the VLT.

Key words: surveys -- quasars: general -- while dwarfs -- stars: low-mass