%0 Generic %1 Kwitter2012 %A Kwitter, Karen B. %A Lehman, Emma M. M. %A Balick, Bruce %A Henry, R. B. C. %D 2012 %K abundances disk m31 outer %T Abundances of PNe in the Outer Disk of M31 %U http://arxiv.org/abs/1202.4933 %X We present spectroscopic observations and chemical abundances of 16 planetary nebulae (PNe) in the outer disk of M31. The O III 4363 line is detected in all objects, allowing a direct measurement of the nebular temperature essential for accurate abundance determinations. Our results show that the abundances in these M31 PNe display the same correlations and general behaviors as Type II PNe in the Milky Way Galaxy. We also calculate photoionization models to derive estimates of central star properties. From these we infer that our sample PNe, all near the peak of the Planetary Nebula Luminosity Function, originated from stars near 2 M_sun. Finally, under the assumption that these PNe are located in M31's disk, we plot the oxygen abundance gradient, which appears shallower than the gradient in the Milky Way.

@misc{Kwitter2012, abstract = { We present spectroscopic observations and chemical abundances of 16 planetary nebulae (PNe) in the outer disk of M31. The [O III] 4363 line is detected in all objects, allowing a direct measurement of the nebular temperature essential for accurate abundance determinations. Our results show that the abundances in these M31 PNe display the same correlations and general behaviors as Type II PNe in the Milky Way Galaxy. We also calculate photoionization models to derive estimates of central star properties. From these we infer that our sample PNe, all near the peak of the Planetary Nebula Luminosity Function, originated from stars near 2 M_sun. Finally, under the assumption that these PNe are located in M31's disk, we plot the oxygen abundance gradient, which appears shallower than the gradient in the Milky Way. }, added-at = {2012-02-23T18:39:00.000+0100}, author = {Kwitter, Karen B. and Lehman, Emma M. M. and Balick, Bruce and Henry, R. B. C.}, biburl = {https://www.bibsonomy.org/bibtex/21af2575979ef88becee3a54395abd83b/miki}, description = {[1202.4933] Abundances of PNe in the Outer Disk of M31}, interhash = {29d65b5e10ce85dd686f388264736640}, intrahash = {1af2575979ef88becee3a54395abd83b}, keywords = {abundances disk m31 outer}, note = {cite arxiv:1202.4933 Comment: 46 pages, including 12 figures and 8 tables, submitted to the Astrophysical Journal}, timestamp = {2012-02-23T18:39:00.000+0100}, title = {Abundances of PNe in the Outer Disk of M31}, url = {http://arxiv.org/abs/1202.4933}, year = 2012 }