A Dust Extinction Web Service in the VO Framework

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Scientific paper

Extragalactic objects observed through telescopes are dimmed and reddened via dust from within our own galaxy. Currently, the Virtual Observatory (VO) has registered dozens of catalogs, including the SDSS, the 2dFGRS, and GOODS, among others (see www.openskyquery.net for example), and not all of these data offer Galactic extinction corrected magnitudes. Likewise, some users will wish to tailor reddening corrections to their own needs. As part of an excercise at the NVO Summer School held in 2004, we have created a callable dust extinction web service that utilizes the Schlegel et al. (1998) extinction maps. In this talk, we go through a step-by-step procedure to design and implement a simple web service in the VO framework. Likewise, we show how our service can be utilized in currently available VO Tools.

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