The Role of Nuclear Starburst in Luminous Infrared Seyfert 2 Galaxies
We present HST (WFPC2 and FOC) images and UV GHRS spectra plus ground-based optical spectra of four Luminous Infrared Galaxies
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Analysis of the Hipparcos Observations of the Extrasolar Planets and the Brown-Dwarf Candidates
We analyzed the Hipparcos astrometric observations of 47 stars that were discovered to harbor giant planets and 14 stars with
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A New Channel for the Detection of Planetary Systems Through Microlensing
We propose and evaluate the feasibility of a new strategy to search for planets via microlensing observations. This new strategy
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Catalog of 156 confirmed extrasolar planets and their 133 parent stars
I present two catalogs. The first one contains the observed and infered data of all of 133 stars wich harbor
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Chemical analysis of 8 recently discovered extra-solar planet host stars
We present the chemical analysis of a new set of stars known to harbor low mass companions, namely HD 1237,
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Conceptual Design of a Cosmic Ray Detector Operating Between 10^17 and 10^19 eV for the Study of the Galactic Center
For our understanding of the origin of ultra high energy cosmic rays, the energy region between 10^17 and 10^19 eV
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Does Betelgeuse have a magnetic field?
Recent numerical simulations by Freytag et al. of the outer convection envelope of the cool super-giant Betelgeuse, have shown that
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Evidence Against BALS in the X-ray Bright QSO PG1416-129
Recent results from the ROSAT All Sky Survey, and from deep ROSAT pointings reveal that broad absorption line quasars (BALQSOs)
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Hot Molecular Cores and the Formation of Massive Stars
It has been proposed that some hot molecular cores (HMCs) harbor a young embedded massive star, which heats an infalling
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Infrared Properties of AGN in the GOODS Fields: AGN in Stellar Dominated High-z Galaxies
We present analysis of spectral energy distributions (SEDs) from mid-infrared through X-ray of a sample of 420 hard X-ray selected,
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Missing Baryons in the Warm-Hot Intergalactic Medium
We briefly review the use of UV absorption lines in the spectra of low-redshift QSOs for the study of the
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Molecular gas in water megamaser active galaxies
We have searched for molecular gas towards the nucleus of four galaxies known to harbor a water vapor megamaser. CO(1-->0)
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New Results from a Survey of Galactic Outflows in Nearby Active Galactic Nuclei
Recent results from a multiwavelength survey of spatially resolved outflows in nearby active galaxies are presented. Optical Fabry-Perot and long-slit
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Spectroscopic Analyses of the Planetary System Candidates: 55 Cnc, 51 Peg, 47 UMa, 70 Vir, and HD 114762
The stars 55 Cnc, 51 Peg, 47 UMa, 70 Vir, and HD 114762 have recently been proposed to harbor planetary
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Starburst Clusters in Galactic Nuclei
Galactic nuclei often harbor a disproportionately large amount of star formation activity with respect to their surrounding disks. Not coincidentally,
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Star Formation in the Nuclei of Spiral Galaxies
Recent observations with the Hubble Space Telescope (HST) have revealed that a large fraction of late-type (Sc and later) spiral
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Surface photometry of LSB edge-on galaxies
We present results of surface photometry for eleven edge-on galaxies observed with the 6-m telescope at the Special Astrophysical Observatory
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The Dynamical Evolution of Dense Rotating Systems: Paper I. Two-Body Relaxation Effects
This paper, and its companion, investigate the evolution of dense stellar systems due to the influence of two-body gravitational encounters,
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The elusive structure of the diffuse molecular gas: shocks or vortices in compressible turbulence?
The cold diffuse interstellar medium must harbor pockets of hot gas to produce the large observed abundances of molecular species,
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The First Stars and Quasars in the Universe
The transition between the nearly smooth initial state of the Universe and its clumpy state today occurred during the epoch
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The Survival of Bars with Central Mass Concentrations
Many barred galaxies today harbor massive concentrations of gas in their centers, and some are known to possess supermassive black
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Unraveling Brown Dwarf Origins
Brown dwarfs, which occupy a fuzzy gap in mass between stars and planets, appear to be common both in the
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Young and Intermediate Stellar population in Seyfert 2 galaxies
We present and discuss near-ultraviolet and optical ground-based spectra of the 20 brightest Seyfert 2 nuclei, and HST ultraviolet images
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