We present lithium observations of 35 stars previously reported by Wichmann et al. (1996) to be possible new weak T Tauri stars (WTTS) discovered by ROSAT in the Taurus-Auriga star-forming region. These stars were identified on the basis of low-resolution optical spectra. We have used our higher resolution spectra for measuring the equivalent

The eighth STEPHI international multi-site campaign was devoted to the δ Scuti Star V647 Tau of the Pleiades Cluster and was carried out in the period 1997 Nov 19-Dec 13. Analysis using two methods gave the same result. Five pulsation frequencies including both radial and non-radial modes are excited in this star. The dominant frequency p = 20.408c

We are continuing a comprehensive systematic study of the properties of Wolf-Rayet Galaxies (WRGs) based on data from ground and space observatories. In this proposal we request time on the KPNO 0.9m and 2.1m telescopes to undertake CCD imagery and spectroscopy of a group of WRGs. Our basic aim is threefold: (a) identify and characterize the

Six BL Lac objects from the complete 1 Jy radio-selected sample of 34 objects were observed in cycle 5 with the Hubble Space Telescope (HST) Wide-Field Planetary Camera 2 (WFPC2) to an equivalent limiting flux of mu_I~26 mag arcsec^-2. Here we report results for the second half of this sample, as well as new results for the first three objects

We present a new high quality continuum-subtracted Hα image of NGC 7479. Using a novel semi-automated technique we have determined the positions, angular sizes, and absolute fluxes of over 1000 Hii regions and have constructed the luminosity function for the regions over the whole galaxy, showing that its slope is within the published range for

The nearly face-on spiral galaxy NGC 3938 has been observed in the H_alpha line with the TAURUS II Fabry-Perot interferometer at the William Herschel Telescope in order to study the kinematics of the ionized gas. We are able to construct intensity, velocity and velocity dispersion maps for this galaxy. The rotation curve of the galaxy is calculated