Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2011-09-26
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
3 pages, 1 figure, to appear in proceedings of the IAU Symposium 283: "Planetary Nebulae: An Eye to the Future", Eds.: A. Manc
Scientific paper
NGC 2438 is a classical multiple shell or halo planetary nebula (PN). Its central star and the main nebula are well studied. Also it was target of various hydrodynamic simulations (Corradi et al. 2000). This initiated a discussion whether the haloes are mainly containing recombined gas (Schoenberner et al. 2002), or if they are still ionized (Armsdorfer et al. 2003). An analysis of narrow-band images and long slit spectra at multiple slit positions was done to obtain a deeper look on morphological details and the properties of the outer shell and halo. For this work there was data available from ESO (direct imaging and long slit spectroscopy) and from SAAO (spectroscopic observations using a small slit - scanning over the whole nebula). Using temperature measurements from emission lines resulted in an electron temperature which clearly indicates a fully ionized stage. Additionally measurements of the electron density suggest a variation of the filling factor.
No associations
LandOfFree
The Ionization State of the Halo Planetary Nebula NGC 2438 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Ionization State of the Halo Planetary Nebula NGC 2438, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Ionization State of the Halo Planetary Nebula NGC 2438 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-689809