Astrophysical: Galaxies

  • Publication
    Analysis of Co-spatial UV-optical HST/STIS Spectra of Planetary Nebula NGC 3242
    This project sought to consider two important aspects of the planetary nebula NGC 3242 using new long-slit HST/STIS spectra. First, we investigated whether this...
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    Analysis of possible anomalies in the QSO distribution of the Flesch & Hardcastle catalogue
    Aims:A recent catalogue by Flesch & Hardcastle presents two major anomalies in the spatial distribution of QSO candidates: i) an apparent excess of such objects...
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    Analysis of the Amplitude of the Sunyaev–Zel’dovich Effect out to Redshift z = 0.8
    The interaction of the cosmic microwave background (CMB) with the hot gas in clusters of galaxies, the so-called Sunyaev–Zel’dovich (SZ) effect, is a very...
  • Publication
    Analysis of the galaxy size versus stellar mass relation
    The scatter in the galaxy size versus stellar mass (M ⋆) relation gets largely reduced when, rather than the half-mass radius R e, the size at a fixed surface...
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    Analytic and numerical realizations of a disc galaxy
    Recent focus on the importance of cold, unshocked gas accretion in galaxy formation - not explicitly included in semi-analytic studies - motivates the following...
  • Publication
    Andromeda II as a merger remnant
    Using N-body simulations, we study the origin of prolate rotation observed in the kinematic data for Andromeda II (And II), a dwarf spheroidal satellite of M31...
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    Angular distribution of satellite galaxies from the Sloan Digital Sky Survey Data Release 4
    We explore the angular distribution of two samples of satellite galaxies orbiting isolated hosts extracted from the Sloan Digital Sky Survey Data Release 4. We...
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    Angular Momentum across the Hubble sequence from the CALIFA survey
    We investigate the stellar angular momentum of galaxies across the Hubble sequence from the CALIFA survey. The distribution of CALIFA elliptical and lenticular...
  • Publication
    Angular Size Test on the Expansion of the Universe
    Assuming the standard cosmological model to be correct, the average linear size of the galaxies with the same luminosity is six times smaller at z = 3.2 than at...