PHANGS-MUSE: Detection and Bayesian classification of ~40 000 ionised nebulae in nearby spiral galaxies

Open Access

Table 3

Summary of the model grids used by the classification algorithm.

H II region
Reference	Pérez-Montero (2014)
Free parameters	Ionisation par., 12 + log(O/H)
C tied to	O
log(N/O)	−0.75

Planetary Nebulae
Reference	Delgado-Inglada et al. (2014)
Free parameters	Luminosity, temperature
Spectral energy distribution	Rauch (TR)
Dust depletion	Yes
Density	3000 cm⁻³
Inner radius	1 × 10¹⁷ cm
Model set	Matter bounded (M40)
Abundances	8.94 (12 + log(O/H))

Shock
Reference	Allen et al. (2008)
Free parameters	Magnetic field, shock velocity
Model set	shock w/o precursor
Pre-shock density	1 cm⁻³
Abundances	Solar (Anders & Grevesse 1989)

Notes. For each grid, we report the reference, the free parameters defining the grids, and the fixed parameter that we used to reduce the dimension of the grid.

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