The magnitudes and temperatures of central stars of planetary nebulae

Details The magnitudes and temperatures of central stars of planetary nebulae The magnitudes and temperatures of central stars of planetary nebulae

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...137..113r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 137, no. 1, Aug. 1984, p. 113-116.

Astronomy and Astrophysics

Astrophysics

37

Planetary Nebulae, Stellar Magnitude, Stellar Temperature, Continuum Flow, Emission Spectra, H Beta Line, Solar Flux Density, Visible Spectrum

Scientific paper

In order to determine the Zanstra temperature of the central star of a planetary nebula, it is necessary to know the visual continuum flux emitted by the star. When the central star is very hot, great care is required to distinguish the weak stellar flux from the sometimes relatively strong nebular continuum. A technique is adopted which involves imaging the nebulae and central star temperatures between 10 to the 5th K and emission lines are found. The technique is applied to nine planetary nebulae and central star temperature between 10 to the 5th K and 2 x 10 to the 5th K is found. For the central star of NGC 2440 the temperature is a lower limit since no star can be detected against the nebular background.

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