2004/10/20 by H. Monteiro, Hektor Monteiro, Hugo E. Schwarz +4 · 1 citation
Chemistry · Mathematics · Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Emission spectrum #Extinction (optical mineralogy) #Geometry #H II region #Ion #Ionization #Line (geometry) #Mathematics #Nebula #Optics #Photoionization #Physics #Planetary nebula #Spectral line #Spectroscopy and Laser Applications #Star formation #Stars #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/426809
published as Astrophys.J. 620 (2005) 321-329 · To be published in ApJ of 10th February 2005. 12 figures
arxiv created 2004/10/20 · openalex publication_date 2005/02/09 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 M ☉ . We also derive a distance of 1050 ± 150 pc to Menzel 1.