The Energy-Balance temperature of central stars of galactic planetary nebulae

Details The Energy-Balance temperature of central stars of galactic planetary nebulae The Energy-Balance temperature of central stars of galactic planetary nebulae

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26as...81..309p&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 81, no. 3, Dec. 1989, p. 309-322.

Astronomy and Astrophysics

Astronomy

42

Planetary Nebulae, Sky Surveys (Astronomy), Stellar Spectra, Stellar Temperature, Astronomical Spectroscopy, Brightness Temperature, H Beta Line, Line Spectra

Scientific paper

The color temperature of the central star of planetary nebulae is calculated assuming that thermal equilibrium holds in the photoionized nebula. The ratio of H-beta of the dereddened intensities of observed collisionally excited lines, with two additional terms is used to estimate the total emissivity of unobserved lines: (1) the contribution of unseen lines of ions visible in the survey's spectral range and (2) the contribution of lines of undetected or unobserved ions of O, Ne, and S. The energy-balance temperature is determined for 388 central stars. The present study shows that the energy-balance method represents a useful way to estimate the temperature of large samples of planetary nebulae.

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