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Orbit Dynamics, Stability and Chaos in Planetary Systems
Let us start with a problem of dynamical biology, which was posed about 800 years ago by Fibonacci1
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Planet Formation
Motivating the study of planet formation is not difficult for any curious audience. One of the fundamental human questions is that of origins: “where...
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Clusters of Galaxies at High Redshift
For a long time, the small number of clusters at z > 0.3 in the Abell survey catalogue and simulations of the standard CDM formation of large scale...
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Velocity Dispersion Analysis of CNOC Clusters
I present results of the analysis of the internal velocity dispersions,...
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The Metal Enrichment History of Clusters of Galaxies
The ratio of the total iron mass in the ICM to the total optical luminosity of the cluster (the iron mass-to-light-ratio) is the same for all...
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Supernovae at High Redshift
Distant supernovae provide a convenient tool for cosmology. As bright beacons with small variation in their peak luminosity Type Ia Supernovae can be...
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The Galactic Bulge: Prospects for the VLT
The central bulge of the Galaxy is 100 times closer than the nearest extragalactic bulge, that of M31. Until the era of 100m telescopes arrives, the...
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The Old Population of the Magellanic Clouds
The brightest old stars in the LMC are as faint as V=16 (V=16.5 in the SMC). The VLT with UVES or GIRAFFE will provide, for the first time, high...
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The Stellar Mass Function
Considerable progress has been made recently in more accurately determining the frequency distribution of stellar masses in the critical 0.1 to 1 m...
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Discovery of an X-Ray Outburst in an Optically Non-Active Galaxy
The main X-ray and optical properties of a very luminous X-ray outburst source are summarized. The results are: large variability in X-ray emission...
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Gamma-Ray Observations of Black Holes: The Prospects of INTEGRAL
In this paper we describe the upcoming European gamma-ray observatory INTEGRAL (International Gamma-Ray Astrophysics Laboratory). This ESA satellite...
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A Search for the Presence of Bow Shocks around High-Mass X-Ray Binaries
The measured radial velocities, and the recently derived tangential velocities based on Hipparcos observations, have demonstrated that several...
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X-Ray Candidates for a Population of Nuclear Cores in Local Group Galaxies
Because of their closeness, the galaxies of the Local Group are an interesting sample for finding weak manifestations of nuclear activity (as is...
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Evidence of a Supernova Origin for the Black Hole in GRO J1655-40 (Nova Scorpii 1994)
We report the discovery of a strong overabundance of several $\alpha$...
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Synergy Between the VLT and the NGST
Three major astronomical facilities will address the distant universe and processes of star formation in the next decade: the Next Generation Space...
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The Cluster Population in a Complete Sample of Optically Identified RASS X-Ray Sources
Using the 2.1-m telescope of the Guillermo Haro Observatory (Cananea, Mexico) the optical counterparts of a count-rate and area limited complete...
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Massive Stars and Their Role in Spectra and Abundances of High Redshift Galaxies
There are great changes in our understanding of massive star evolution. Although it is a known fact that the populations of massive stars (O-stars,...
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Planetary Microlensing: Present Status and Long-Term Goals
Massive gravitational microlensing programs were begun about a decade ago as a means to search for compact baryonic dark matter in the Galaxy [1],...
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Extrasolar Planets Transits: Detection and Follow-Up
The detection of transits has a rich potential of information about extrasolar planets. This contribution gives an overview and new perspectives on...
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Solar Nebulae and Replenished Dust Disks with Planets
Having studied the primordial, protoplanetary gas disks, and older, dusty “remnant” disks in infrared-emitting (Vega-type) circumstellar systems, we...