Volume 406, Number 1, July IV 2003
|Page(s)||165 - 174|
|Section||Interstellar and circumstellar matter|
|Published online||17 November 2003|
Abundances of Planetary Nebulae BD+30 3639 and NGC 6543*
SRON National Institute for Space Research, PO Box 800, 9700 AV Groningen, The Netherlands
2 Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, The Netherlands
3 Laboratory for Astronomy and Solar Physics, NASA-Goddard Space Flight Center, Greenbelt, MA 20771, USA
Corresponding author: J. Bernard-Salas, J.Bernard@sron.rug.nl
Accepted: 15 May 2003
Infrared spectra taken with the Short Wavelength Spectrometer on board ISO and UV observations with IUE of planetary nebulae BD+30 3639 and NGC 6543 are presented. The extinction derived using infrared lines for BD+30 3639 is , slightly higher than previous determinations. For NGC 6543 the extinction found from the hydrogen lines is . Infrared, optical and ultraviolet data have been used to derive the physical parameters of the nebula. BD+30 3639 has an average K and . In the case of NGC 6543 a K and have been found, in agreement with previous determinations. The element abundances have been derived and compared to those found in the Sun and O, B stars. This comparison gives a hint of the mass of the progenitor stars from which they evolved.
Key words: ISM: abundances / planetary nebulae: individual: BD+30 3639, NGC 6543 / infrared: ISM / ISM: lines and bands
© ESO, 2003
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.