Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-10-20
Astrophys.J. 620 (2005) 321-329
Astronomy and Astrophysics
Astrophysics
To be published in ApJ of 10th February 2005. 12 figures
Scientific paper
10.1086/426809
We present the results of a spatio-kinematic study of the planetary nebula Menzel 1 using spectro-photometric mapping and a 3-D photoionization code. We create several 2-D emission line images from our long-slit spectra, and use these to derive the line fluxes for 15 lines, the Halpha/Hbeta extinction map, and the [SII] 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.
Gruenwald Ruth
Guenthner Katherine
Heathcote Steve R.
Monteiro Hektor
Schwarz Hugo E.
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