Abstract
An infrared objective-prism survey of the southern Milky Way from longitude 2100 to 320 has revealed a large number of likely supergiants of late type. Follow-up observations by narrow-band photometry and CCD spectroscopy have confirmed that more than 100 of the candidate stars are indeed supergiants of types K and M, increasing very substantially the number of such stars known in this part of the sky. Since distances can be estimated for these stars from the spectroscopic and photometric data, the new supergiants should help to improve our knowledge of the spiral-arm structure 6f this part of the Galaxy.
