Astrophysical: Galaxies

  • Publication
    Optical spectroscopy of high-redshift BL Lac objects
    BL Lac objects (BLLs) are defined by the presence of very weak (typically < 5 Å) or even absent spectral lines. This makes determining their distance...
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    Optical Study of the Hyper-luminous X-Ray Source 2XMM J011942.7+032421
    We present the identification and characterization of the optical counterpart to 2XMM J011942.7+032421, one of the most luminous and distant ultra-luminous X...
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    Optical Surface Photometry of a Sample of Disk Galaxies. I. Observations and Data Reduction
    We present accurate optical surface photometry in the U, B, V, R, and I passbands for 11 disk galaxies. The sample has been selected in order to study the...
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    Optical surface photometry of a sample of disk galaxies. II. Structural components
    This work presents the structural decomposition of a sample of 11 disk galaxies, which span a range of different morphological types. The U, B, V, R, and I...
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    Optical surface photometry of radio galaxies - I. Observations and data analysis
    This is the first paper of a series aimed at studying the structural and photometric properties in the optical band of a sample of 95 radio galaxies. Detailed...
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    Optical surface photometry of radio galaxies. II. Observations and data analysis
    Optical imaging observations for 50 radio galaxies are presented. For each object isophotal contours, photometric profiles, structural parameters (position...
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    Optical synchrotron emission and particle acceleration in radio hot spots
    We discuss, in terms of particle acceleration, the results from optical observations with ESO's Very Large Telescope aimed at the detection of the optical...
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    Optical validation and characterisation of Planck PSZ1 sources at the Canary Islands observatories. II. Second year of ITP13 observations
    We report new galaxy clusters previously unknown included in the first Planck Sunyaev-Zeldovich (SZ) sources catalogue, the PSZ1. The results presented here...
  • Publication
    Optical validation and characterization of Planck PSZ1 sources at the Canary Islands observatories. I. First year of ITP13 observations
    We have identified new clusters and characterized previously unknown Planck Sunyaev-Zeldovich (SZ) sources from the first Planck catalogue of SZ sources (PSZ1)...