New IR photometry of M10 red giant stars is presented, and these data are used to derive the reddening and the distance modulus of the M10 cluster and to locate the red-giant-branch in the theoretical HR diagram. Values obtained for E(B - V) and (m - M)0 are 0.17 + or - 0.05 and 14. + or - 0.2, respectively, assuming that M10 cluster has a

This paper presents the Johnson-Cousins UBVR CCD photometry of two old rich open clusters toward the galactic anticenter: King 11 and Be 42. Included are the color-magnitude (C-M) diagrams of King 11 and Be 42; the color excess; and the reddening, metallicity, and distance modulus of the two clusters. Also given are the ages of King 11 and Be 42

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A computing code has been developed to simulate the center-to-limb variation (CLV) of the bisector's shape, and absolute wavelength shift of the core in strong photospheric lines. Observational results concerning these aspects are also reported for the K I 7699 line. In the numerical simulation, granulation is represented, as a first approximation

Theoretical pulsation frequencies derived from a typical model computation are used to identify the periods during which the Delta Scuti star 63 Herculis oscillates. The frequencies are computed in the adiabatic and linear approximations and consideration is given to p and g modes. The possibility of rotational splitting is considered.