Fig. 9
Spectra of stars in Field 2. The three top objects have similar colours and are affected by heavy reddening. They are likely members of the RSGC3 association. F2S05 is a luminous foreground giant. F2S09 morphologically looks like a giant (though the spectrum has low SNR), but its reddening and vrad are similar to those of supergiants in the RSGC3 association.
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