Astrophysics (Index)About

Zanstra method

(method of determining temperature of hot star within a nebula)

The Zanstra method is a method of determining the temperature of a hot star within a nebula such as a planetary nebula. It models the nebula as optically thick for ionizing radiation, and presumes the observed H-β is related to the amount of absorbed ionizing radiation. A comparison of this to the specific intensity of another wavelength yields the fraction of electromagnetic radiation constituting ionizing radiation, from which a matching black-body spectrum can be worked out. A star's Zanstra temperature is its temperature as determined by this method.


(technique)
Further reading:
https://en.wikipedia.org/wiki/Zanstra_method
https://ui.adsabs.harvard.edu/abs/1927ApJ....65...50Z/abstract
http://www.astro.gsu.edu/~crenshaw/7.Diagnostics.pdf
https://ui.adsabs.harvard.edu/abs/2000A%26A...362L..17P/abstract

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