Simultaneous Estimation of Large-scale Structure and Milky Way Dust Extinction from Galaxy Surveys

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dc.contributor.authorBravo, Matias
dc.contributor.authorGawiser, Eric
dc.contributor.authorPadilla, Nelson D.
dc.contributor.authorDeRose, Joseph
dc.contributor.authorWechsler, Risa H.
dc.date.accessioned2025-01-20T22:05:37Z
dc.date.available2025-01-20T22:05:37Z
dc.date.issued2021
dc.description.abstractThe high cosmological precision offered by the next generation of galaxy surveys hinges on improved corrections for Galactic dust extinction. We explore the possibility of estimating both the dust extinction and large-scale structure from a single photometric galaxy survey, making use of the predictable manner in which Milky Way dust affects the measured brightness and colors of galaxies in a given sky location in several redshift bins. To test our method, we use a synthetic catalog from a cosmological simulation designed to model the Vera C. Rubin Observatory Legacy Survey of Space and Time. At high Galactic latitude (vertical bar b vertical bar greater than or similar to 20 degrees) and a resolution of 1 degrees (7'), we predict the uncertainty in the measurement of dust extinction, E(B - V), to be 0.005 mag (0.015 mag). This is similar to the uncertainty of existing dust maps, illustrating the feasibility of our method. Simultaneous estimation of large-scale structure is predicted to recover the galaxy overdensity delta with a precision of similar to 0.01 (similar to 0.05) at 1 degrees (7') resolution. We also introduce a Bayesian formalism that combines prior information from existing dust maps with the likelihood of Galactic dust extinction determined from the excursion of observed galaxy properties.
dc.fuente.origenWOS
dc.identifier.doi10.3847/1538-4357/ac1fea
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.3847/1538-4357/ac1fea
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/94156
dc.identifier.wosidWOS:000715529200001
dc.issue.numero2
dc.language.isoen
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.titleSimultaneous Estimation of Large-scale Structure and Milky Way Dust Extinction from Galaxy Surveys
dc.typeartículo
dc.volumen921
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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