A&A 436, 953-965 (2005)
Abundances of planetary nebulae
and IC 4191S. R. Pottasch1, D. A. Beintema1, 2 and W. A. Feibelman3 1
Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, The Netherlands
SRON Laboratory for Space Research, PO Box 800, 9700 AV Groningen, The Netherlands
Laboratory for Astronomy and Solar Physics, Code 681, Goddard Space Flight Center MD, USA
(Received 30 December 2004 / Accepted 11 March 2005)
Abstract Key words:
The ISO and IUE spectra of the elliptical nebulae
are presented. These spectra are combined with the spectra in the visual wavelength region to obtain a complete, extinction corrected, spectrum.
The chemical composition of the nebulae is then calculated and compared to
previous determinations. A discussion is also given of the exciting stars of the nebulae, and possible evolutionary effects.
ISM: abundances --
ISM: planetary nebulae: individual:
ISM: planetary nebulae: individual: NGC 6818 --
ISM: planetary nebulae: individual: IC 4191
© ESO 2005
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.