Planetary nebulae. V

Details Planetary nebulae. V Planetary nebulae. V

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984s%26w....23...15g&link_type=abstract

Sterne und Weltraum (ISSN 0039-1263), vol. 23, Jan. 1984, p. 15-17. In German.

Physics

Planetary Nebulae, Stellar Envelopes, Atmospheric Attenuation, Balmer Series, Black Body Radiation, Emission Spectra, Interstellar Matter, Lyman Spectra

Scientific paper

The characterization of the central stars of planetary nebulae (CSPN) using observations of their shells (SPN), is discussed. The observability, from earth and space, of the emission spectrum of a typical CSPN (represented by a 50,000-K blackbody) at a distance of several kpc is illustrated graphically. It is shown that the most important and intense portion of this spectrum, the Lyman quanta below 912 A, is absorbed by the interstellar medium, and specifically by the SPN itself. The method developed by Zanstra in 1927 to estimate the Lyman emission of the CSPN from the Balmer emission (or the optical He-recombination spectrum) of the SPN is explained. Recent satellite observations in the 100-300-nm range have confirmed the accuracy of the H and/or He Zanstra temperature as an estimate of CSPN effective temperature.

Affiliated with

Also associated with

No associations

Rating

Planetary nebulae. V 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 Planetary nebulae. V, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Planetary nebulae. V will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-938050