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Showing 81-100 of 10,000 results

  1. Detection of Reactive Ions Towards UC Hii Regions

    We report the first detection of the reactive ions CO+ and HOC+ towards ultracompact (UC) Hii regions, in particular Mon R2 and G29.96-0.02. Two...
    J. Ricardo Rizzo, Asuncion Fuente in High Resolution Infrared Spectroscopy in Astronomy
    Conference paper

  2. Phoenix Spectra of Carbon Stars in the LMC

    We present high-resolution, IR-spectra of Carbon stars in the LMC obtained with the Phoenix spectrometer on the Gemini South 8-meter telescope. This...
    Rurik Wahlin, Kjell Eriksson, ... Bengt Westerlund in High Resolution Infrared Spectroscopy in Astronomy
    Conference paper

  3. High-Resolution IR Spectroscopy of the Circumstellar Medium of AGB Stars

    The evolution of a star on the asymptotic giant branch (AGB) is complex and fascinating, and our overall understanding of this phase is reasonably...
    Hans Olofsson in High Resolution Infrared Spectroscopy in Astronomy
    Conference paper

  4. Chemical Abundances in the Galactic Bulge

    The early history of star formation and chemical enrichment of our Galaxy is imprinted in the abundance patterns of the old stellar populations: the...
    Livia Origlia, R. Michael Rich in High Resolution Infrared Spectroscopy in Astronomy
    Conference paper

  5. Spectral Properties of Brown Dwarfs and Hot Jupiters

    Brown dwarfs bridge the gap between the stellar and planetary mass regimes. Evolving from conditions very similar to the lowest-mass stars, the...
    Derek Homeier, France Allard, ... Edward A. Baron in High Resolution Infrared Spectroscopy in Astronomy
    Conference paper

  6. First Spectroscopic Observations of Low-Mass Companions to X-Ray Selected Main Sequence Late B-type Dwarfs with NIRSPEC at Keck II

    Recently, using near infrared photometric observations with ADONIS+ SHARP II, we have detected 21 new IR objects around 49 X-ray selected late B-type...
    Swetlana Hubrig, Markus Schöller, ... Gaspard Duchêne in High Resolution Infrared Spectroscopy in Astronomy
    Conference paper

  7. Low Temperature Plasmas

    Characteristic properties and generation mechanisms of low temperature plasmas in different gas discharges are presented. A special part is focussed...
    J. Meichsner in Plasma Physics
    Chapter

  8. Strongly Coupled Plasmas

    We give a brief introduction into the basic many-particle effectes in strongly coupled plasmas and their theoretical treatment. Exemplary results are...
    R. Redmer in Plasma Physics
    Chapter

  9. Why Are Only High-Redshift Obscured AGN Bright Submillimeter Sources?

    The bulk of the QSO luminosity density was produced at 1 <3, and with 0.5-2 keV luminosities close to the break of the X-ray luminosity...
    F.J. Carrera, M.J. Page, ... J.P.D. Mittaz in Growing Black Holes: Accretion in a Cosmological Context
    Conference paper

  10. The Spatial Clustering of X-ray Selected AGN in the Chandra Msec Fields

    I present here the first estimates of the spatial correlation function of X-ray selected AGN in the 2Msec Chandra Deep Field North (CDFN) and 1Msec...
    R. Gilli in Growing Black Holes: Accretion in a Cosmological Context
    Conference paper

  11. Red Optical Quasars are X-ray Blue Quasars

    We have selected a sample of 12 dust-reddened quasars with extremely red colors, reddenigs and redshifts in the range of 0.4 < z < 2.21 using a...
    T. Urrutia, M. Lacy, ... M. Gregg in Growing Black Holes: Accretion in a Cosmological Context
    Conference paper

  12. How Black Holes Get Their Kicks:Radiation Recoil in Binary Black Hole Mergers

    Gravitational waves from the coalescence of binary black holes carry linear momentum, causing center of mass recoil. This “radiation rocket” has...
    S.A. Hughes, M. Favata, D.E. Holz in Growing Black Holes: Accretion in a Cosmological Context
    Conference paper

  13. A Physically Motivated Toy Model for the BH-Spheroid Coevolution

    We present a summary of the results obtained with a time-dependent, one-zone toy model aimed at exploring the importance of radiative feedback on the...
    L. Ciotti, J.P. Ostriker, S. Yu. Sazonov in Growing Black Holes: Accretion in a Cosmological Context
    Conference paper

  14. The Obscured X-ray Background and Evolution of AGN

    The X-ray Background has been resolved in the 0.5– $5{\rm\thinspace keV}$...
    A.C. Fabian, M.A. Worsley in Growing Black Holes: Accretion in a Cosmological Context
    Conference paper

  15. High Redshift Lyman Break Galaxies

    Two of the most outstanding issues in modern astrophysics are what reionized the Universe and how did the first objects form. Observations of...
    M.D. Lehnert, M.N. Bremer in Multiwavelength Map** of Galaxy Formation and Evolution
    Conference paper

  16. The Luminosity Function of AGN at z ~ 5 ...1

    We present a determination of the optical/UV AGN luminosity function and its evolution, based on a large sample of faint (R < 24) QSOs identified in...
    Christian Wolf, Lutz Wisotzki, ... Klaus Meisenheimer in Multiwavelength Map** of Galaxy Formation and Evolution
    Conference paper

  17. The Cosmic Infrared Background (CIRB) and the Role of the “Local Environment of Galaxies” in the Origin of Present-Day Stars

    A combination of evidence is presented suggesting that the majority of the stars in today’s galaxies were born during a luminous infrared phase...
    David Elbaz, Delphine Marcillac, Emmanuel Moy in Multiwavelength Map** of Galaxy Formation and Evolution
    Conference paper

  18. Mid-Ultraviolet Spectral Diagnostics of Galaxy Evolution

    We describe how optical spectra of z=1–2 galaxies can help test the hypothesis of hierarchical galaxy formation.
    Sara R. Heap, Thierry Lanz in Multiwavelength Map** of Galaxy Formation and Evolution
    Conference paper

  19. The Epochs of Early-Type Galaxy Formation in Clusters and in the Field

    Using our models of absorption line indices that account for variable abundance ratios, we derive ages, total metallicities, and element abundance...
    Daniel Thomas, Claudia Maraston, Ralf Bender in Multiwavelength Map** of Galaxy Formation and Evolution
    Conference paper

  20. Strange Hosts of Blue Compact Galaxies

    Luminous Blue Compact Galaxies (BCGs) have low metallicities, high gas consumption rates and are frequently involved in mergers. These are properties...
    Nils Bergvall, Thomas Marquart, ... Göran Östlin in Multiwavelength Map** of Galaxy Formation and Evolution
    Conference paper
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