Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545427k&link_type=abstract
American Astronomical Society, AAS Meeting #215, #454.27; Bulletin of the American Astronomical Society, Vol. 42, p.472
Astronomy and Astrophysics
Astronomy
Scientific paper
The formation of planetary nebulae (PNe) is traditionally thought to occur during the late stages of stellar evolution in individual 1-8 solar mass stars. However, the presence of 4 PNe in the 150 Milky Way (MW) globular clusters (GCs) suggests other methods may be required, such as interacting binaries or mergers, to enhance the very low progenitor masses. Using WIYN/Hydra medium resolution spectra of 455 GCs in M31, we searched for spectral and kinematic tracers of GC PNe. The results yielded 10 - 14 very likely candidate PNe, which is statistically proportional to the number found in the MW sample. However, the lack of PNe from x-ray GCs fails to support the interacting binary theory.
Evan Kaplan was supported by the NOAO/KPNO Research Experiences for Undergraduates (REU) Program which is funded by the National Science Foundation Research Experiences for Undergraduates Program and the Department of Defense ASSURE program through Scientific Program Order No. 13 (AST-0754223) of the Cooperative Agreement No. AST-0132798 between the Association of Universities for Research in Astronomy (AURA) and the NSF.
Ciardullo Robin
Davies John J.
de Marco Orsola
Feldmeier John . J.
Fullton Laura
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