CCD PHOTOMETRY AND SPECTROSCOPY OF IRAS SOURCES HAVING FAR-IR COLORS SIMILAR TO PLANETARY-NEBULAE

CCD imaging and BVRI photometry of 14 IRAS sources with far-IR colors similar to planetary nebulae and post-AGE stars are presented. Also re sults of optical and near-IR spectroscopy of 10 of these candidates ar e given. From the observed flux distribution from 0.4 mu m to 100 mu m we find the presence of hot dust component in addition to the cold du st component. The stellar temperatures, luminosities and distances are estimated. We also estimated the parameters of the circumstellar dust envelopes. These results suggest that the 14 IRAS sources considered here are associated with post-AGE supergiants. (C) 1996 American Astro nomical Society.