Abstract
view Abstract Citations (42) References (10) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Low-Dispersion Spectroscopic Search for Water Vapor in Cool Stars. Spinrad, Hyron ; Newburn, Ray L., Jr. Abstract The presence of water-vapor absorption lines in the spectra of late-type M giants has been established with low-dispersion spectra at the (201) rotation-vibration band near 9400. The high-excitation stellar H20 lines form a noticeable head at X 9278, and the medium- and low-excitation lines blend with the telluric absorptions to increase markedly the total observed band strength. The water band is strongest in the very coolest stars, especially long-period Mira variables near minimum light. The detection of nearby TiO and ZrO bands has been utilized in a tabular description of the near-infrared stellar spectra. We derive an approximate abundance of 2 gm/cm2 for the water vapor in the visible atmosphere of Mira near minimum light. This amount of stellar H20 falls far below the amount of water theoretically predicted above r 0 tin Mira. Publication: The Astrophysical Journal Pub Date: April 1965 DOI: 10.1086/148190 Bibcode: 1965ApJ...141..965S full text sources ADS | data products SIMBAD (34)
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