Spectroscopy of the central stars of three evolved planetary nebulae

Details Spectroscopy of the central stars of three evolved planetary nebulae Spectroscopy of the central stars of three evolved planetary nebulae

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...328..598s&link_type=abstract

Astronomy and Astrophysics, v.328, p.598-601 (1997)

Astronomy and Astrophysics

Astrophysics

4

White Dwarfs, Planetary Nebulae: Individual: Pn G011.4+17.9, Pn G308.2+07.7, Pn G332.5-16.9, Stars Abundances, Stars: Fundamental Parameters

Scientific paper

We present results of a spectroscopic project that aims at investigations of stars in the upper left part of the HRD. We observed the central stars of the three old planetary nebulae PN G011.4+17.9, PN G308.2+07.7, and PN G332.5-16.9. The spectra (echelle) were analysed by fitting the H and Heii lines with theoretical profiles from a grid of non-LTE model atmospheres. The models are composed of H and He and disregard metal opacities. The three nuclei appear to be very hot (T_eff near 10(5) K) and comparison with post-AGB evolutionary tracks reveals that the masses range between 0.55 and 0.75 M_&sun;; the central star of PN G332.5-16.9 shows an enrichment in He and probably also in C and N. Based on observations collected at the European Southern Observatory, La Silla, Chile

Affiliated with

Also associated with

No associations

Rating

Spectroscopy of the central stars of three evolved planetary nebulae 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 Spectroscopy of the central stars of three evolved planetary nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopy of the central stars of three evolved planetary nebulae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1171343