期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 448, 期 2, 页码 1738-1750出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stv068
关键词
methods: statistical; stars: distances; dust, extinction
资金
- United Kingdom Science Technology and Facilities Council (STFC) [ST/K00106X/1]
- European Research Council under the European Union/ERC [321067]
- Ville de Paris
- Science and Technology Facilities Council [ST/K00106X/1, ST/I001077/1] Funding Source: researchfish
- STFC [ST/I001077/1, ST/K00106X/1] Funding Source: UKRI
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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