The X-ray Emission of Late-type Companions to Planetary Nebula Nuclei

Details The X-ray Emission of Late-type Companions to Planetary Nebula Nuclei The X-ray Emission of Late-type Companions to Planetary Nebula Nuclei

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop...65b&link_type=abstract

XMM-Newton Proposal ID #04016703

Other

Stars, White Dwarfs, Solar System, Lw Hya (Abell 3, Stha 190, Hd 330036, Xmm-Newton Proposal 04016703

Scientific paper

Rapid rotation generates strong magnetic activity in late-type stars via a dynamo. Late-type companions to the nuclei of planetary nebulae (PNe) are expected to be rapid rotators due to accretion from the slow heavy wind of the nucleus while it was an AGB star, and hence strong X-ray emitters. Yet, XMM-Newton found two of three such stars to have X-ray activity levels an order of magnitude lower than those of other fast rotators. This impacts on our understanding of unresolved X-ray sources in PNe and may give clues as to the vital ingredients for an efficient dynamo. We aim to measure the X-ray emission level of the archetype, Abell 35, and the two brightest d' symbiotics, young PNe containing late-type rapid rotators, to test the ubiquity of this low activity.

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