Spectra of early-type stars in several heavily reddened OB associations are used to study broad diffuse bands in the range from 5700 to 6300 angstroms. The features at 5778 angstroms and 6170 angstroms correlated well with narrower lines in their vicinity. The 5795-angstrom band is not correlated with the overlapping line at 5797 angstroms but

The authors have measured the 7Li abundance in G 64-12 an extremely metal-deficient dwarf [Fe/H] = -3.5 (Carney and Peterson, 1981) with effective temperature Teff = 6350K, and a very high velocity Vrad = 439 km/s. The result is log N(7Li) = 2.23 (±0.20), where log N(H) = 12. This star has a considerably lower metallicity than previous population

An analysis of IRAS data for a sample of classical (optically selected) Seyfert galaxies is presented. The IRAS fluxes at 25, 60, and 100 μm are found to be uncorrelated or only very weakly correlated with the ultraviolet-optical continuum flux and the fluxes at 3.5 and 10 μm. This provides further evidence that the active nucleus is not the

Not Available

Not Available

IAUC 4306 available at Central Bureau for Astronomical Telegrams.