Astrophysical: Galaxies

  • Publication
    A strong correlation between bar strength and global star forming activity in isolated barred galaxies
    I have studied the relation between the global star formation activity and the bar structure in a sample of isolated barred galaxies. The star formation...
  • Publication
    A Strong Dichotomy in S0 Disk Profiles between the Virgo Cluster and the Field
    We report evidence for a striking difference between S0 galaxies in the local field and the Virgo Cluster. While field S0 galaxies have disks whose surface...
  • Publication
    A study of catalogued nearby galaxy clusters in the SDSS-DR4. I. Cluster global properties
    Context: Large surveys such as the Sloan Digital Sky Survey have made large amounts of spectroscopic and photometric data of galaxies available, thereby...
  • Publication
    A study of catalogued nearby galaxy clusters in the SDSS-DR4. II. Cluster substructure
    Context. According to the current cosmological paradigm, large scale structures form hierarchically in the Universe. Clusters of galaxies grow through a...
  • Publication
    A study of correlation between the oscillation amplitude and stellar parameters of delta Scutis in open clusters. Toward selection rules for delta Scuti star oscillations
    In the present work, we study correlations between stellar fundamental parameters and the oscillation amplitude for delta Scuti stars. We present this study for...
  • Publication
    A study of emission lines variability of the active galaxy PKS 0521-365.
    Optical spectrophotometry of the active galaxy PKS 0521-365 over a period of 7 years is reported, together with the analysis of IUE archival spectra. The Hα...
  • Publication
    A study of extragalactic planetary nebulae populations based on spectroscopy. I. Data compilation and first findings
    We compile published spectroscopic data and [O III] magnitudes of almost 500 extragalactic planetary nebulae (PNe) in 13 galaxies of various masses and...
  • Publication
    A Study of Gravitational Lens Chromaticity with the Hubble Space Telescope
    We report Hubble Space Telescope observations of six gravitational lenses with the Advanced Camera for Surveys. We measured the flux ratios between the lensed...
  • Publication
    A study of interacting galaxies from the Arp-Madore catalog: Triggering of star formation and nuclear activity
    We present Gemini Multi-Object Spectrograph (GMOS) spectroscopic observations of 95 galaxies from the Arp & Madore (1987) catalog of peculiar galaxies. These...