The results of a long term programme of broad band JHK photometry, for a sample of 360 late type stars, made at the Observatorio del Teide (Tenerife, Spain) are presented. Transformations between these magnitudes and those of several currently used systems (CIT (Elias et al. 1982 and Carney 1983), Johnson (Johnson 1966, and Lee 1970), and ESO

LA MEMORIA TITULADA "TRIDIMENSIONAL DISTRIBUTION OF HORIZONTAL VELOCITY UNDER THE SOLAR SURFACE", QUE PRESENTA D. JESUS PATRON RECIO PARA ACCEDER AL GRADO DE DOCTOR EN ASTROFISICA, ES EL RESULTADO DE UN INTENSO TRABAJO BASADO EN EL ANALISIS DE LAS OSCILACIONES SOLARES, CON EL OBJETO DE ESTIMAR LA DISTRIBUCION DE FLUJOS DE VELOCIDADES HORIZONTALES

Near-infrared, optical, and ultraviolet quasi-simultaneous observations of 11 BL Lacertae objects are reported. For all but one source the dereddened spectral flux distribution in the (8 x 10 13)-(2 x 1015) Hz frequency range can be described by a single power law fv proportional to v-alpha with average spectral index (mean value of alpha) = 0.88 +

Large-scale propagating star formation in galaxies is studied as a self-regulatin process. The model connects the energy injection by star formation with the resultin interstellar structures in a differentially rotating disc. The star formation cycl includes the formation of new stars in groups, multisupernova remnants agglomerafin the gas into

Not Available

NN and Pi-N partial wave radial potentials have been generated using the latest SM94-VPI(NN) and FA93-VPI(Pi-N) phase shifts. The potentials are used to determine the deuteron properties and to compute the 3H and 3He binding energies. The e_1 mixing angles of SM94-VPI and NY93-Nijmegen differ significantly and inversion potentials yield a P_d of 6