The relations between the angular momentum (J) and the mass (M) for a sample of spiral galaxies are discussed for galaxies distributed in the rotational velocity (V) - size (R) plane. It is found that, for a given mass, Sc galaxies have larger angular momentum (~20%) than Sa. The absence of segregation in the angular momentum (J) - mass (M) plane

We apply the spherical infall model to compare the observed distribution of radial velocities of galaxies around Coma with predictions that are based on optical and X-ray overdensity profiles. Two optically selected galaxy catalogues, the CfA redshift survey and a UKST plate scanned with the APM, are used to determine the overdensity profile of the

Not Available

EL OBJETIVO DE ESTA TESIS HA SIDO EL ESTUDIO DE REGIONES EXTENSAS DE LINEAS DE EMISION ESTRECHAS (RELE) ASOCIADAS A GALAXIAS ACTIVAS, CON EL FIN DE DETERMINAR EL DIAGRAMA POLAR DEL CONTINUO IONIZANTE NUCLEAR Y CON ELLO RESTRINGIR LOS PARAMETROS DE LOS MODELOS DE LA FUENTE DE DICHO CONTINUO. PARA ELLO SE HAN COMBINADO OBSERVACIONES CON

Not Available (2 data files).

The equivalent widths and abundances of Lithium in galactic carbon stars are presented in Table 1. The observations were made during 1990 and 1991 in 3 different observatories: Roque de los Muchachos and Calar Alto (Spain), and La Silla (Chile). The resolving power of the spectra is 15000-2000 for the spanish observations, and about 60000 for the