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Journal Articles Monthly Notices of the Royal Astronomical Society Year : 2015

Marginal likelihoods of distances and extinctions to stars: computation and compact representation

S. E. Sale
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Abstract

We present a method for obtaining the likelihood function of distance and extinction to a star given its photometry. The other properties of the star (its mass, age, metallicity and so on) are marginalized assuming a simple Galaxy model. We demonstrate that the resulting marginalized likelihood function can be described faithfully and compactly using a Gaussian mixture model. For dust mapping applications we strongly advocate using monochromatic over bandpass extinctions, and provide tables for converting from the former to the latter for different stellar types.
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insu-03644976 , version 1 (25-04-2022)

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S. E. Sale, J. Magorrian. Marginal likelihoods of distances and extinctions to stars: computation and compact representation. Monthly Notices of the Royal Astronomical Society, 2015, 448, pp.1738-1750. ⟨10.1093/mnras/stv068⟩. ⟨insu-03644976⟩
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