Planetary nebulae in the inner Milky Way
Abstract
New abundances of planetary nebulae located towards the bulge of the Galaxy are derived based on observations made at LNA (Brazil). We present accurate abundances of the elements He, N, S, O, Ar, and Ne for 56 PNe located towards the galactic bulge. The data shows a good agreement with other results in the literature, in the sense that the distribution of the abundances is similar to those works. From the statistical analysis performed, we can suggest a bulge-disk interface at 2.2 kpc for the intermediate mass population, marking therefore the outer border of the bulge and inner border of the disk.
Cite
@article{arxiv.0912.2078,
title = {Planetary nebulae in the inner Milky Way},
author = {O. Cavichia and R. D. D. Costa and W. J. Maciel},
journal= {arXiv preprint arXiv:0912.2078},
year = {2015}
}
Comments
2 pages, 1 figure, uses iaus.cls, in press, IAU Symp. 265, Chemical abundances in the Universe: Connecting the first Stars to Planets, Ed. K. Cunha, M. Spite, B. Barbuy