Evolution of Globular Clusters Formed in Mergers
Globular clusters formed in galactic mergers (e.g., The Antennae) can now be studied at different stages of their evolution. In
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The Unique Properties of omega Centauri Seen Through Stroemgren Eyes
A revised metallicity calibration of the Stroemgren (b-y),m_1 diagram, based on a sample of globular cluster and field red giant
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Identifying old Tidal Dwarf Galaxies in Simulations and in the Nearby Universe
Most Tidal Dwarf Galaxies (TDGs) so-far discussed in the literature may be considered as young ones or even newborns, as
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Population gradients in nearby dwarf galaxies
Recent results on the detection of substructure in dwarf spheroidal galaxies are discussed. In most cases they show that, when
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AM CVn stars
I review our observational and theoretical knowledge of AM CVn stars, focusing on recent developments. These include newly discovered systems,
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The Atmospheric Neutrino Anomaly: Muon Neutrino Disappearance
With the 1998 announcement of new evidence for muon neutrino disappearance observed by the Super-Kamiokande experiment, the more than a
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Gamma-Ray Bursts: Old and New
Gamma-ray bursts are sudden releases of energy that for a duration of a few seconds outshine even huge galaxies. 30
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A new investigation on the Antlia Dwarf Galaxy
We present deep (I,V-I) and (I,B-I) color-magnitude diagrams (CMDs) of the Antlia dwarf galaxy, based on Science Verification (SV) data
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Isolated Neutron Stars in the Galaxy
In this article we briefly review our recent results on evolution and properties of isolated neutron stars (INSs) in the
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Redshifts of New Galaxies
Observations increasingly demonstrate the spatial association of high redshift objects with larger, low redshift galaxies. These companion objects show a
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On the number of accreting and cooling isolated neutron stars detectable with the ROSAT All-Sky Survey
We present limits to the log N - log S curve for isolated neutron stars, both cooling and accreting neutron
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Observations of planetary nebulae in the Galactic Bulge
High quality spectrophotometric observations of 30 Planetary Nebulae in the Galactic Bulge have been made. Accurate reddenings, plasma parameters, and
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Elliptical Galaxies: Detailed Structure, Scaling Relations and Formation
The last decade of research on elliptical galaxies has produced a wealth of new information concerning both their detailed structure
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UBVRI photometric sequences for symbiotic stars
Deep, wide-range and accurate UBVRI photometric sequences have been established around more than 80 symbiotic stars, to assist current photometry
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Self-gravitating accretion disk in Sgr A* few million years ago: was Sgr A* a failed quasar?
Sgr A* is extra-ordinarily dim in all wavelengths requiring a very low accretion rate at the present time. However, at
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Secondary Accceleration of Cosmic Rays by Supernova Shocks
In the common model supernova shock-acceleration of cosmic rays there are two open questions: 1. where does the high energy
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UV Spectra, Line Indices of M31 Globular Clusters and E Galaxy Cores
Observations in integrated light (2200-4800 A, 8 to 11 A resolution, S/N > 20) of 4 M31 globular clusters and
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The Star Formation History in the Andromeda Halo
I present the preliminary results of a program to measure the star formation history in the halo of the Andromeda
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Dust disks around old Pre Main-Sequence stars: HST/NICMOS2 scattered light images and modeling
We present recent near-infrared detections of circumstellar disks around the two old PMS Herbig stars HD 141569 and HD 100546
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On the possibility of ground-based direct imaging detection of extra-solar planets: The case of TWA-7
We show that {\em ground-based} direct imaging detection of extra-solar planets is possible with current technology. As an example, we
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Survival Rates and Consequences
To first order, the initial cluster luminosity function appears to be universal. This means that the brightest young cluster in
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What is the nature of the central compact X-ray source in the supernova remnant RCW 103
In this poster I discuss the nature of the compact X-ray source in the center of the supernova remnant RCW
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Conceptual Study of an ``Anti-Tagged'' Experiment Searching for muon-neutrino --> electron-neutrino Oscillation
We study the conceptual feasibility of a high energy, ``short baseline'', zero background experiment to search for muon-neutrino --> electron-neutrino
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Where the Baryons Are
A fair and complete accounting of cosmic baryons now appears possible, because most of them are in states which are
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