Table 3: Extinction for BD+30 3639. The predicted H $_{{\rm\beta }}$ fluxes have been derived using the theoretical fluxes from Hummer & Storey (1987) (see text for explanation).
Ident. Transition $\lambda$ Flux$^\sharp$ Predict.$^\sharp$ ¸
    ($\mu $m)   H $_{{\rm\beta }}$  
Br$\alpha$ 5 $\rightarrow$ 4 4.052 25.1 304 0.51
Br$\beta$ 6 $\rightarrow$ 4 2.626 13.3 283 0.48
Pf$\alpha$ 6 $\rightarrow$ 5 7.459 7.69 292 0.50
Pf$\gamma$ 8 $\rightarrow$ 5 3.740 3.33 303 0.51
H I 13 $\rightarrow$ 5 3.039 1.71 311 0.52
$^\sharp$ Units in 10-12 erg cm-2 s-1.

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