On the theoretical ratio of some nebular lines.

Details On the theoretical ratio of some nebular lines. On the theoretical ratio of some nebular lines.

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989msngr..58...44a&link_type=abstract

The Messenger, vol. 58, p. 44-46

Physics

6

Planetary Nebulae: Spectra

Scientific paper

As pointed out by Rosa (1985) and Wampler (1985), the response of the IDS system seems to show a dependence on the value of the input intensity. Peimbert and Torres-Peimbert (1987) give a review of different determinations of the factor K in the relation between the flux F and the instrumental signal S = F^(1+K). The value of K seems to be small (0.03) if the emission lines appear over a strong continuum - which is rare for planetary nebulae -, and K is higher (0.08) for lines over a weak continuum. The value adopted by Peimbert and Torres-Peim bert is 0.07.

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