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Astron. Astrophys. 332, 300-306 (1998)

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Planetary nebulae with DENIS *

Capabilities for imaging nebulae

S. Kimeswenger 1, F. Kerber 1, M. Roth 2, M. Dennefeld 3, B. de Batz 4, J. Borsenberger 3, L. Capoani 4, E. Copet 4, E. Deul 5, N. Epchtein 4, T. Forveille 6, P. Fouqué 4, J. Hron 7, F. Lacombe 4, T. Le Bertre 4, S. Pau 4, J. C. Renault 4, D. Rouan 4, M. Schultheis 7 and D. Tiphène 4

1 Institut für Astronomie der Leopold-Franzens-Universität Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria
2 Las Campanas Observatory, La Serena, Chile
3 Institut d'Astrophysique de Paris, 98 bis Boulevard Arago, F-75014 Paris, France
4 Observatoire de Paris-Meudon, CNRS, 5, place Jules Janssen, F-92195 Meudon Cedex, France
5 Sterrewacht Leiden, Postbus 9504, 2300 RA Leiden, The Netherlands
6 Observatoire de Grenoble, CNRS, BP 53X, F-38041 Grenoble Cedex 9, France
7 Institut für Astronomie der Universität Wien, Türkenschanzstraße 17, A-1180 Wien, Austria

Received 23 September 1997 / Accepted 17 November 1997

Abstract

The Deep Near Infrared Southern Sky Survey (DENIS) is the first attempt to survey the entire southern sky in the near infrared (NIR) range in three bands (I, J and [FORMULA] ; Epchtein et al. 1997). A lot of studies have been done on planetary nebulae (PNe) in the NIR throughout the last decades. These investigations often use J, H and K bands. Thus the DENIS survey will lead, due to different bands and to the total sky coverage, to a new view on PNe in this wavelength domain. We demonstrate here the capabilities for the imaging of planetary nebulae with DENIS on basis of nebulae observed during the first phase of the survey. We also compare the results for NGC 2440 with deep high-resolution images obtained at the 100-inch Las Campanas duPont telescope. The DENIS data, being comparable to ISOCAM in spatial resolution (Cesarsky et al. 1996), will also support investigation done at longer wavelengths by means of ISO (Kimeswenger et al. 1997a). We also assess the quality of photometry obtained with DENIS by comparison with literature results. In regions with high background stellar confusion we are able to improve on the photometry significantly in accuracy and reliability.

Key words: planetary nebulae: NGC 2440; NGC 3242; NGC 3918; NGC 5189; Hb 5; KFL 14 – surveys

* Based on observations collected at the European Southern Observatory, La Silla, Chile

Send offprint requests to: S. Kimeswenger

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© European Southern Observatory (ESO) 1998

Online publication: March 10, 1998
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