Astrophysics, abstract
astro-ph/0309751
From: Jacek Choloniewski <estymator@gazeta.pl>
Date: Sat, 27 Sep 2003 21:47:33 GMT (180kb)
Extinction in the Galaxy from surface brightnesses of ESO-LV
galaxies: testing 'standard' extinction maps
Authors: Jacek
Choloniewski, Edwin A.
Valentijn
Comments: 15 pages, 10 figures, submitted to Acta Astronomica
The relative extinction in the Galaxy computed with our new method
(Choloniewski and Valentijn 2003, CV) is compared with three patterns:
Schlegel, Finkbeiner and Davis (1998, SFD), Burstein and Heiles (1978,
BH) and
the cosecans law. It is shown that extinction of SFD is more reliable
then that
of BH since it stronger correlates with our new extinction. The
smallest
correlation coeffcient have been obtained for the cosecans law. Linear
regression analysis show that SFD overestimate the extinction by a
factor of
1.4.
Our results clearly indicate that there is non-zero extinction at the
Galactic South pole and that the extinction near the Galactic equator
($|b|<40^o$) is significantly larger in the Southern hemisphere than
in the
Northern.
Full-text: PDF