SPECTRA OF COOL STARS IN THE J-BAND (1.0-1.3 MU-M) AT MEDIUM RESOLUTION

A spectroscopic survey of 103 cool S-, C-, and M-type stars was undert aken with the Kitt Peak cryogenic spectrograph on the 1.3 m telescope to make a detailed search for new molecular bands in the 1.0-1.3 mu m J-band region. While the spectra have high signal-to-noise ratios and good repeatability, no strong new features were found. Higher resoluti on spectra of a small sample of representative stars observed with the 4 m Fourier transform spectrometer were invoked in order to identify the features in these spectra. With few exceptions, the details of the se spectra are well understood. Laboratory spectra were obtained to ai d in the identification of some weak features. Spectral features from dominant lines of Ti, Fe, Al, Si, Mn, Na, and K, and molecular bands d ue to TiO, TiS, ZrO, ZrS, VO, H2O, and CN, have been identified in the spectra. Several weak unidentified bands are found.