To get insight into the nature of the ionized gas in the nuclear region of LINERs, we performed a study of HST Hα imaging of 32 LINERs. The main conclusion from...
We present high-resolution echelle spectra of seven proximate damped Lyman α (PDLA) systems. The relative velocity separation of each PDLA from the background...
The Nature of Starbursts. I. The Star Formation Histories of Eighteen Nearby Starburst Dwarf Galaxies
We use archival Hubble Space Telescope observations of resolved stellar populations to derive the star formation histories (SFHs) of 18 nearby starburst dwarf...
The Nature of Starbursts. II. The Duration of Starbursts in Dwarf Galaxies
The starburst phenomenon can shape the evolution of the host galaxy and the surrounding intergalactic medium. The extent of the evolutionary impact is partly...
The Nature of the Antlia Galaxy: A New Dwarf Irregular in the Outskirts of the Local Group.
The Antlia dwarf galaxy, recently found to be a possible local Group member, is analyzed using VI photometry. The galaxy is resolved into a large number of...
Results are presented on optical and near-IR photometry of cometary nebula 1548 C27, together with associated high and intermediate resolution spectroscopy of...
The nature of the Cygnus extreme B supergiant 2MASS J20395358+4222505
2MASS J20395358+4222505 is an obscured early B supergiant near the massive OB star association Cygnus OB2. Despite its bright infrared magnitude (K s = 5.82) it...
The Nature of the Far-Infrared Emission from Seyfert Galaxies
Optical R-band imaging data and far-infrared (FIR) Infrared Space Observatory data from Seyfert galaxies are combined to show that the compact optical emission...
Recent data on, and interpretations of the Kleinmann-Low nebula are examined. It is suggested that associated high velocity gas is radiatively accelerated by a...