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e-Science and the Grid
Many areas of science involve access to distributed computing and data resources, specialized and expensive instruments for world-wide collaborations...
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The Hamburg/RASS Catalogue of Optical Identifications of ROSAT Bright Source X-Ray Sources
We used digitized Schmidt direct and prism plates taken for the northern hemisphere Hamburg Quasar Survey (HQS) to obtain optical identifications for...
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Stellar Populations in NGC 1399 Traced by Globular Clusters from a Wide-Field Study
We present a photometric investigation of the globular cluster population of NGC 1399, the central galaxy in the Fornax cluster, in Washington C and...
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A Galactic Model as a Useful Tool for Virtual Observatories
Many observational data will be available through Virtual Observatories, but at some wavelengths and in some directions, no data yet exist....
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Multiwavelength Studies of Microquasar GRS 1915 + 105
The microquasar GRS 1915 + 105 has shown spectacular variability and has been extensively studied in multiwavelengths during last few years. The...
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The Disruption Time of Clusters in Selected Regions of Four Galaxies
If the cluster formation rate is constant and the disruption time of clusters depends on their initial mass as...
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2dF Spectroscopy of M104 Globular Clusters
We present preliminary results of 2dF spectroscopy of globular clusters in The Sombrero (M104). We find 56 new clusters, and compile a total sample...
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The Formation of Globular Clusters in the Local Universe
The discovery that young globular clusters are forming in local galaxies has revitalized the study of globular clusters. There is now good evidence...
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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 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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Low and Intermediate Mass Stars: Learning Theory from Observations
We summarize the results of stellar evolution theory obtained over the last two decades and highlight the points of disagreement with the present-day...
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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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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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The Darwin Space Interferometer
Darwin is a mid-IR(5-30 micron) interferometry observatory with baselines greater than 50 metres. As a long-duration general purpose observatory, ESA...
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2MASS Brown Dwarfs and a First Estimate of the Substellar Mass Function
More than 70 L dwarfs have now been found in followup work on a small portion of the sky surveyed by the Two Micron All Sky Survey. It is estimated...
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High Precision Interferometry with the NPOI
Now that we have seen successful operation of the first 8 meter VLT unit telescopes and the 10 meter Kecks, we are all looking forward to what will...
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Adaptive Optics Imaging of Faint Companions: Test Case of MWC480
We briefly describe how diffraction-limited imaging with adaptive optics (AO) can detect young massive brown dwarfs by direct imaging. We will review...
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5. Building Blocks of Life
Life is based on complex chemistry yet only a few of all the available elements participate in most life-supporting reactions on Earth: carbon,...
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4. Energy Sources and Life
An external energy source is a necessary condition for life, because living systems require a flow of energy to organize materials and maintain a low...
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Hot Massive Planets Around Nearby Young Stars – A Search with NACO at the VLT
The detection of massive planets (3-10 M J ) around nearby (D ≤ 50 pc) young late-type stars (10-200 Myr) is possible...