Astrofísicas: Modelos astronómicos

  • Publicación
    Non-detection of the 1.67 micron band in HB 5? Implications for PAH-related models
    In this paper we present a high resolution IR spectrum of the planetary nebula Hb5, over the range 1.6-1.75 micron. Our aim is to test the hypothesis invoking...
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    Observational and physical cosmology
    The present volume discusses topics associated with the very early universe, primordial nucleosynthesis, big bang nucleosynthesis and light-element abundances...
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    Observations of three BL Lacertae objects - Constraints on inhomogeneous relativistically beamed jet models
    Multifrequency observations are presented of three BL Lac objects, including the first UV measurements of 0912 + 297 and 1219 + 285. An eight day optical flare...
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    Observed differences between large and small sunspots
    We confirm recent results about the differences in temperature and magnetic field strength between the umbra of large and small sunspots. Five Stokes I- and V...
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    On the evolution of supernova remnants. II - Two-dimensional calculations of explosions inside pre-existing wind-driven bubbles
    Supernova explosions within wind-driven bubbles are studied with 2D hydrodynamical calculations. Two different density distributions for the ejecta are...
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    On the temperature and velocity through the photosphere of a sunspot penumbra
    We investigate the structure in depth of a sunspot penumbra by means of the inversion code of the radiative transfer equation proposed by Ruiz Cobo & del Toro...
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    Oxygen abundances in F-type stars of the Hyades and the Ursa Major group
    We have derived the oxygen abundances of 50 F-type main-sequence stars, belonging to the Hyades open cluster, the Ursa Major group, and the field, using an NLTE...
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    Photometric observations of the warped disks of NGC 4013, NGC 4565 and NGC 6504
    Three spiral galaxies with warped disks have been observed; NGC 4013, NGC 4565, and NGC 6504. There is a clear wavelength dependence in the warp's curve, the...
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    Position-dependent infrared spectroscopy of M82 - 100,000 Orion nebulae?
    It is reported that 8-13-micron spectra have been obtained at several positions across the extended emission region of M82. No major differences among the...