Astrofísicas: Galaxias

  • Publicación
    Dissecting Early-type Dwarf Galaxies into Their Multiple Components
    Early-type dwarf galaxies, once believed to be simple systems, have recently been shown to exhibit an intriguing diversity in structure and stellar content. To...
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    Dissecting galactic bulges in space and time - I. The importance of early formation scenarios versus secular evolution
    The details of bulge formation via collapse, mergers, secular processes or their interplay remain unresolved. To start answering this question and quantify the...
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    Dissecting the cosmic infra-red background with Herschel/PEP
    The constituents of the cosmic IR background (CIB) are studied at its peak wavelengths (100 and 160 μm) by exploiting Herschel/PACS observations of the GOODS-N...
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    Dissecting the long-term emission behaviour of the BL Lac object Mrk 421
    We report on long-term multiwavelength monitoring of blazar Mrk 421 by the GLAST-AGILE Support Program of the Whole Earth Blazar Telescope (GASP-WEBT)...
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    Dissecting the morphological and spectroscopic properties of galaxies in the local Universe. I. Elliptical galaxies
    Aims: We revisit the scaling relations and star-forming histories of local elliptical galaxies using a novel selection method applied to the Sloan Digital Sky...
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    Dissecting the size evolution of elliptical galaxies since z˜ 1: puffing-up versus minor-merging scenarios
    At a fixed stellar mass, the size of low-redshift early-type galaxies is found to be a factor of 2 larger than that of their counterparts at z˜ 1, a result with...
  • Publicación
    Dissecting the stellar content of Leo I: a dwarf irregular caught in transition
    Leo I is considered one of the youngest dwarf spheroidals (dSph) in the Local Group. Its isolation, extended star formation history (SFH), and recent...
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    Distance and reddening of the Local Group dwarf irregular galaxy NGC 6822
    On the basis of a new photometric analysis of the Local Group dwarf irregular galaxy NCG 6822 based on observations obtained with the Advanced Camera for...
  • Publicación
    Distance estimation of gamma-ray-emitting BL Lac objects from imaging observations
    Aims. The direct redshift determination of BL Lac objects is highly challenging as the emission in the optical and near-infrared bands is largely dominated by...