We present time-resolved optical spectroscopy and photometry of the nova-like cataclysmic variable V348 Puppis. The system displays the same spectroscopic behaviour as SW Sex stars, so we classify V348 Pup as a new member of the class. V348 Pup is the second SW Sex system (the first is V795 Herculis) which lies in the period gap. The spectra
V348 Puppis: a new SW Sex star in the period gapRodríguez-Gil, P. et al.122001
CBET 780 available at Central Bureau for Astronomical Telegrams.Munari, U. et al.
Variable stars in Local Group Galaxies - I. Tracing the early chemical enrichment and radial gradients in the Sculptor dSph with RR Lyrae stars
We identified and characterized the largest (536) RR Lyrae (RRL) sample in a Milky Way dSph satellite (Sculptor) based on optical photometry data collected over ˜24 years. The RRLs display a spread in V-magnitude (˜0.35 mag) which appears larger than photometric errors and the horizontal branch (HB) luminosity evolution of a mono-metallicMartínez-Vázquez, C. E. et al.
Variation of Galactic Bar Length with Amplitude and Density as Evidence for Bar Growth over a Hubble Time
Ks-band images of 20 barred galaxies show an increase in the peak amplitude of the normalized m=2 Fourier component with the R25-normalized radius at this peak. This implies that longer bars have higher m=2 amplitudes. The long bars also correlate with an increased density in the central parts of the disks, as measured by the luminosity inside 0Elmegreen, Bruce G. et al.
Velocities of RR Lyrae Stars in the Sagittarius Tidal Stream
Not AvailableVivas, A. Katherina et al.
Velocity Fields within the Solar Convection Zone: Evidence from Oscillation Ring Diagram Analysis of Mount Wilson Dopplergrams
A ring-diagram analysis of solar oscillations has been applied to a 3 day time series of full-disk Doppler images obtained at Mount Wilson. A model of the three-dimensional power spectrum assuming a Lorentzian profile in frequency and the advection of the wave front by horizontal flows has been fitted to the observed spectrum. The model providesCacciani, A. et al.