The primary objective of this work is to create an all sky extinction map of the Milky Way galaxy. We have cross-matched the Sloan Digital Sky Survey (SDSS data release 8) photometric observations with that of Galaxy Evolution Explorer (GALEX data release 6). This provides a wide range of wavelength coverage from Far Ultra-Violet through the optical spectrum and gives one unique SDSS source for every GALEX source. We discuss a sample of ∼32000 objects in the north galactic pole (≥75° latitude) from this combined database. The Castelli and Kurucz Atlas was fit to the photometric observations of each star, best fit being determined using a chi-square test. Best fit parameters provide the spectral type and extinction towards each of the objects. The shift in magnitude obtained during the best-fit can be used to determine the distance to each of the stars. With this data, a comprehensive extinction map can be made for the high-latitude objects and later extended to all-sky.
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Research Article| June 26 2013
Mapping extinction using GALEX and SDSS photometric observations
S. B. Gudennavar;
AIP Conf. Proc. 1543, 70–76 (2013)
Preethi Krishnamoorthy, S. B. Gudennavar, Jayant Murthy; Mapping extinction using GALEX and SDSS photometric observations. AIP Conf. Proc. 26 June 2013; 1543 (1): 70–76. https://doi.org/10.1063/1.4812601
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