Physics
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007hst..prop11218b&link_type=abstract
HST Proposal ID #11218. Cycle 16
Physics
Scientific paper
Planetary nebulae PNe in globular clusters GCs raise a number of interesting issues related to stellar and galactic evolution. The number of PNe known in Milky Way GCs, 4, is surprisingly low if one assumes that all stars pass through a PN stage. However, it is likely that the remnants of stars now evolving in Galactic GCs leave the AGB so slowly that any ejected nebula dissipates long before the star becomes hot enough to ionize it. Thus there should not be ANY PNe in Milky Way GCs--but there are four! It has been suggested that these PNe are the result of mergers of binary stars within GCs, i.e., that they are descendants of blue stragglers. The frequency of occurrence of PNe in external galaxies poses more questions, because it shows a range of almost an order of magnitude. I propose a Snapshot survey aimed at discovering PNe in the GC systems of Local Group galaxies more distant than the Magellanic Clouds. These clusters, some of which may be much younger than their counterparts in the Milky Way, might contain many more PNe than those of our own galaxy. I will use the standard technique of emission-line and continuum imaging, which easily discloses PNe.;
No associations
LandOfFree
Snapshot Survey for Planetary Nebulae in Globular Clusters of the Local Group does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Snapshot Survey for Planetary Nebulae in Globular Clusters of the Local Group, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Snapshot Survey for Planetary Nebulae in Globular Clusters of the Local Group will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-780881