EDP Sciences
Free access
Volume 377, Number 2, October II 2001
Page(s) L18 - L21
Section Letters
DOI http://dx.doi.org/10.1051/0004-6361:20011161

A&A 377, L18-L21 (2001)
DOI: 10.1051/0004-6361:20011161

Planetary nebula or symbiotic Mira? Near infrared colours mark the difference

S. Schmeja and S. Kimeswenger

Institut für Astrophysik der Leopold-Franzens-Universität Innsbruck, Technikerstr. 25, 6020 Innsbruck, Austria (http://astro.uibk.ac.at)

(Received 21 May 2001 / Accepted 17 August 2001 )

Nebulae around symbiotic Miras look very much like genuine planetary nebulae, although they are formed in a slightly different way. We present near infrared photometry of known and suspected symbiotic nebulae obtained with the Deep Near Infrared Southern Sky Survey (DENIS). We demonstrate that the near infrared colours are an excellent tool to distinguish symbiotic from genuine planetary nebulae. In particular we find that the bipolar planetary nebulae M 2-9 and Mz 3 are in fact symbiotic Miras. Further observations on prototype symbiotic Miras prove that the proposed classification scheme works generally.

Key words: planetary nebulae: general -- binaries: symbiotic -- stars: AGB and post-AGB -- stars: winds, outflows

Offprint request: S. Schmeja, stefan.j.schmeja@uibk.ac.at

SIMBAD Objects

© ESO 2001

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access.

An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account.
    In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.