Volumetric 3D Modeling Of The X-ray Emission Region Within The Planetary Nebula BD+30 3639

Details Volumetric 3D Modeling Of The X-ray Emission Region Within The Planetary Nebula BD+30 3639 Volumetric 3D Modeling Of The X-ray Emission Region Within The Planetary Nebula BD+30 3639

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21348706y&link_type=abstract

American Astronomical Society, AAS Meeting #213, #487.06; Bulletin of the American Astronomical Society, Vol. 41, p.461

Astronomy and Astrophysics

Astronomy

Scientific paper

Planetary nebulae (PN) are the last stages of evolution of intermediate mass (1-8 Msolar) stars. Their shapes are thought to result from interactions between the present-day, fast (emerging white dwarf) and previously ejected, slow (red giant) stellar winds. Such interactions can superheat wind material via shocks, generating X-rays in the process. We observed the X-ray bright, young PN, BD+30 3639 in 2006 (February, March & December) for 300 ks using the Chandra X-ray Observatory's Low Energy Transmission Gratings in combination with its Advanced CCD Imaging Spectrometer (LETG/ACIS). The LETG/ACIS results indicate that the X-ray source originates essentially from the present-day stellar wind (Ne/O and C/O are greatly enhanced over solar, while Fe/O is subsolar) and suggest the presence of a range of plasma temperatures from Tx 1.7 MK to 2.9 MK (Yu et al. 2008, ApJ, in press; astro-ph/0806.2281). We are in the process of constructing 3-dimensional plasma models describing the intrinsic structure of the X-ray-emitting region of BD+30 3639 by reproducing the LETG/ACIS results (both the 0th order image and dispersed images), taking into account the physical/chemical plasma components and intervening absorption obtained from spectral model fitting and Chandra's instrumental characteristics. Our approach takes advantage of volumetric 3D modeling (V3D) routines under development at MIT's Kavli Institute. We present preliminary results in the form of X-ray spectra and images synthesized using spectral-V3D models.

Affiliated with

Also associated with

No associations

Rating

Volumetric 3D Modeling Of The X-ray Emission Region Within The Planetary Nebula BD+30 3639 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 Volumetric 3D Modeling Of The X-ray Emission Region Within The Planetary Nebula BD+30 3639, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Volumetric 3D Modeling Of The X-ray Emission Region Within The Planetary Nebula BD+30 3639 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1710669