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arXiv:0706.0369 (astro-ph)
[Submitted on 4 Jun 2007]

Title:Spatial Variations of Galaxy Number Counts in the Sloan Digital Sky Survey. II. Test of Galactic Extinction in High Extinction Regions

Authors:Naoki Yasuda, Masataka Fukugita, Donald P. Schneider
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Abstract: Galactic extinction is tested using galaxy number counts at low Galactic latitude obtained from five band photometry of the Sloan Digital Sky Survey. The spatial variation of galaxy number counts for low extinction regions of $E(B-V) < 0.15$ is consistent with the all-sky reddening map of Schlegel, Finkbeiner, & Davis (1998) and the standard extinction law. For higher extinction regions of $E(B-V) > 0.15$, however, the map of Schlegel et al.(1998) overestimates the reddening by a factor up to 1.4, which is likely ascribed to the departure from proportionality of reddening to infrared emissivity of dust. This result is consistent with the analysis of Arce & Goodman (1999) for the Taurus dark cloud complex.
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:0706.0369 [astro-ph]
  (or arXiv:0706.0369v1 [astro-ph] for this version)
  https://doi.org/10.48550/arXiv.0706.0369
Journal reference: Astron.J.134:698-705,2007
Related DOI: https://doi.org/10.1086/519836

Submission history

From: Naoki Yasuda [view email]
[v1] Mon, 4 Jun 2007 02:40:14 UTC (195 KB)
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