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Astron. Astrophys. 329, 291-314 (1998)

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5. Guide to the tables

The wavelengths of all the lines in the tables are those of Thomas & Neupert (1994) rounded to two decimal places, except for those lines not in the catalogue. Some of the lines will have a superscript that indicates one of the following:

[TABLE]

For the ratios displayed, the following symbols are used:

[TABLE]

Some other symbols used throughout the text are:

[TABLE]

The values of the theoretically `density insensitive' ratios are obtained by simply taking the mean of that ratio over a number of different densities, e.g., 10 [FORMULA] - 10 [FORMULA] cm-3, while the error bars come from the standard deviation of this set of numbers. If temperature sensitivity is strongest then the same procedure is applied over the temperature range [FORMULA] to [FORMULA].

In some cases, CHIANTI predicts lines not found in the SERTS-89 catalogue. If such lines are potentially useful as a density diagnostic, then an upper limit based on the [FORMULA] sensitivity level (see Table 2 of Thomas & Neupert) is used to provide a constraint on the predicted density.

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© European Southern Observatory (ESO) 1998

Online publication: November 24, 1997
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