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6. Future work

The proposed classification of 1.5 Å spectra of hot subdwarfs has obvious merits for selecting targets for more detailed study, for providing a precise nomenclature for hot subluminous stars and for making statistical studies of the hot subdwarf population. A number of deficiencies still need to be addressed.

It should be emphasized that the proposed scheme does not replace the 10 Å classifications (e.g. Green et al. 1986). There will be circumstances such as studies of subdwarfs in distant clusters or further survey work where one will be forced to work at the lower resolution.

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