Abundance Anomalies in the X-ray Spectra of the Planetary Nebulae NGC 7027 and BD +30 363

Details Abundance Anomalies in the X-ray Spectra of the Planetary Nebulae NGC 7027 and BD +30 363 Abundance Anomalies in the X-ray Spectra of the Planetary Nebulae NGC 7027 and BD +30 363

2003-01-30

arxiv.org/abs/astro-ph/0301613v1

Astrophys.J. 589 (2003) 439-443

Astronomy and Astrophysics

Astrophysics

16 pages, 5 figures, accepted for publication in the Astrophysical Journal

Scientific paper

10.1086/374414

We revisit Chandra observations of the planetary nebulae NGC 7027 and BD +30 3639 in order to address the question of abundance anomalies in the X-ray emitting gas. Enhanced abundances relative to solar of magnesium (Mg) for NGC 7027 and neon (Ne) for BD +30 3639 are required to fit their X-ray spectra, whereas observations at optical and infrared wavelengths show depleted Mg and Ne in these systems. We attribute the enhancement of Mg in NGC 7027 in the X-ray, relative to the optical, to the depletion of Mg onto dust grains within the optical nebula. For BD +30 3639, we speculate that the highly enhanced Ne comes from a WD companion, which accreted a fraction of the wind blown by the asymptotic giant branch progenitor, and went through a nova-like outburst which enriched the X-ray emitting gas with Ne.

Affiliated with

Also associated with

No associations

Rating

Abundance Anomalies in the X-ray Spectra of the Planetary Nebulae NGC 7027 and BD +30 363 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 Abundance Anomalies in the X-ray Spectra of the Planetary Nebulae NGC 7027 and BD +30 363, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Abundance Anomalies in the X-ray Spectra of the Planetary Nebulae NGC 7027 and BD +30 363 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-335437