Chemical Abundances of the Symbiotic Nova AG Pegasi

Details Chemical Abundances of the Symbiotic Nova AG Pegasi Chemical Abundances of the Symbiotic Nova AG Pegasi

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jkas...41...23k&link_type=abstract

Journal of the Korean Astronomical Society, vol. 41, no. 2, pp. 23-37

Astronomy and Astrophysics

Astronomy

Binaries: Symbiotics: Interstellar Matter: Individual(Ag Peg), Abundances

Scientific paper

The high-resolution optical region spectroscopic data of the symbiotic nova AG Peg secured with the Hamilton Echelle Spectrograph at the Lick Observatory, have been analyzed along with the International Ultraviolet Explorer UV archive data. We measure about 700 line intensities in the wavelengths of 3859 to 9230Å and identify about 300 lines. We construct pure photoionization models that represent the observed lines and the physical condition for this symbiotic nova. The spectral energy distribution of the ionizing radiation is adopted from stellar model atmospheres. Based on photoionization models, we derive the elemental abundances; C & N appear to be similar to be smaller than the Galactic planetary nebular value while O is enhanced. Our result is compared with the Contini (1997, 2003) who analyzed the UV region spectral data with the shock + ionization model. The Fe abundance appears to be enhanced than that of normal planetary nebulae, which suggests that AG Peg may have formed in the Galactic disk. The models indicate that the temperature of the central star
which excite the shell gas may have fluctuated to an unexpected extent during the years 1998 - 2002.

Affiliated with

Also associated with

No associations

Rating

Chemical Abundances of the Symbiotic Nova AG Pegasi 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 Chemical Abundances of the Symbiotic Nova AG Pegasi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chemical Abundances of the Symbiotic Nova AG Pegasi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1704598