Three-Dimensional Photoionization Structure and Distances of Planetary Nebulae. II. Menzel 1
Abstract
We present the results of a spatiokinematic study of the planetary nebula Menzel 1 using spectrophotometric mapping and a three-dimensional photoionization code. We create several two-dimensional emission-line images from our long-slit spectra and use these to derive the line fluxes for 15 lines, the Hα/Hβ extinction map, and the [S II] line ratio density map of the nebula. We use our photoionization code constrained by these data to derive the three-dimensional nebular structure and ionizing star parameters of Menzel 1 by simultaneously fitting the integrated line intensities, the density map, and the observed morphologies in several lines, as well as the velocity structure. Using theoretical evolutionary tracks of intermediate- and low-mass stars, we derive a mass for the central star of 0.63+/-0.05 Msolar. We also derive a distance of 1050+/-150 pc to Menzel 1.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- February 2005
- DOI:
- 10.1086/426809
- arXiv:
- arXiv:astro-ph/0410496
- Bibcode:
- 2005ApJ...620..321M
- Keywords:
-
- ISM: Planetary Nebulae: Individual: Name: Menzel 1;
- Astrophysics
- E-Print:
- To be published in ApJ of 10th February 2005. 12 figures