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An Atlas of Galaxy Spectral Energy Distributions from the Ultraviolet to the Mid-infrared

Imanishi, Masatoshi; Peek, J. E. G.; Moustakas, John +6 more

We present an atlas of 129 spectral energy distributions for nearby galaxies, with wavelength coverage spanning from the ultraviolet to the mid-infrared. Our atlas spans a broad range of galaxy types, including ellipticals, spirals, merging galaxies, blue compact dwarfs, and luminous infrared galaxies. We have combined ground-based optical drift-s…

A Multi-level Solver for Gaussian Constrained Cosmic Microwave Background Realizations

Eriksen, H. K.; Seljebotn, D. S.; Mardal, K. -A. +2 more

We present a multi-level solver for drawing constrained Gaussian realizations or finding the maximum likelihood estimate of the cosmic microwave background sky, given noisy sky maps with partial sky coverage. The method converges substantially faster than existing Conjugate Gradient (CG) methods for the same problem. For instance, for the 143 GHz …