Optimal extinction measurements - I. Single-object extinction inference

Abstract

In this paper we present XNICER, an optimized multi-band extinction technique based on the extreme deconvolution of the intrinsic colors of objects observed through a molecular cloud. XNICER follows a rigorous statistical approach and provides the full Bayesian inference of the extinction for each observed object. Photometric errors in both the training control field and in the science field are properly taken into account. XNICER improves over the known extinction methods and is computationally fast enough to be used on large datasets of objects. Our tests and simulations show that this method is able to reduce the noise associated with extinction measurements by a factor 2 with respect to the previous NICER algorithm, and it has no evident bias even at high extinctions.

11 pages, 13 figures

References in corpus (23)

• Astropy: A Community Python Package for Astronomy
• The Gaia mission
• Information criteria for astrophysical model selection
• The Wavelength Dependence of Interstellar Extinction from 1.25 to 8.0 microns Using GLIMPSE Data
• Infrared Extinction Toward Nearby Star-Forming Regions
• Mapping the interstellar dust with near-infrared observations: An optimized multi-band technique
• 2MASS wide field extinction maps - I. The Pipe nebula
• Herschel-Planck dust optical-depth and column-density maps: I. Method description and results for Orion
• The "True" Column Density Distribution in Star-Forming Molecular Clouds
• Extreme deconvolution: Inferring complete distribution functions from noisy, heterogeneous and incomplete observations
• NICEST, a near-infrared color excess method tailored for small-scale structures
• VISION - Vienna survey in Orion I. VISTA Orion A Survey
• Herschel-Planck dust optical depth and column density maps - II. Perseus
• 2MASS wide field extinction maps: V. Corona Australis
• High-resolution mapping of interstellar clouds with near-infrared scattered light
• Optimal column density measurements from multiband near-infrared observations
• Allsky NICER and NICEST extinction maps based on the 2MASS near-infrared survey
• The mid-infrared extinction law in the darkest cores of the Pipe Nebula
• Estimating Extinction using Unsupervised Machine Learning
• Hunting Galaxies to (and for) Extinction
• VISION - Vienna Survey in Orion II. Infrared extinction in Orion A
• Mapping of interstellar clouds with infrared light scattered from dust: TMC-1N
• Near-infrared extinction with discretised stellar colours

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