Distribution of dust around galaxies: an analytic model
نویسندگان
چکیده
منابع مشابه
Distribution of compact object mergers around galaxies
Compact object mergers are one of the currently favored models for the origin of GRBs. The discovery of optical afterglows and identification of the nearest, presumably host, galaxies allows the analysis of the distribution of burst sites with respect to these galaxies. Using a model of stellar binary evolution we synthesize a population of compact binary systems which merge within the Hubble t...
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We explore the distribution of mass about the expected sites of galaxy formation in a high-resolution hydrodynamical simulation of a ΛCDM cosmology which includes cooling, star-formation and feedback. We show that the evolution of the galaxy bias is non-trivial and non-monotonic and that the bias is stochastic. We discuss the galaxy-mass cross-correlation function and highlight problems with th...
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Compact object mergers are one of the favorite models of GRBs. It has been noted that in opposition to the collapsars, compact object mergers do not necessarily take place in the host galaxies, and may travel outside of them. With the discovery of afterglows and identification of host galaxies one can measure the distribution of GRBs with respect to their host galaxies. This distribution has be...
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We use a stellar binary population synthesis code to find the lifetimes and velocities of several types of possible GRB progenitors: double neutron stars, black hole neutron stars, black hole white dwarfs, helium star mergers. Assuming that they are born in different types of galaxies we compute their spatial distribution and compare it with the observed locations of GRB afterglows within their...
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Lyman-break galaxies (LBGs) contain a non-negligible amount of dust. Takeuchi et al. (2003a) (T03) constructed a model of the infrared spectral energy distribution (SED) for very young galaxies by taking into account the dust size distribution in the early stage of galaxy evolution, which can be different from that of present-day evolved galaxies. We applied T03 model to LBGs and constructed th...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society: Letters
سال: 2012
ISSN: 1745-3925
DOI: 10.1111/j.1745-3933.2012.01268.x