A survey of small-scale extremes in extinction at low Galactic latitudes using IRAS galaxies

Details A survey of small-scale extremes in extinction at low Galactic latitudes using IRAS galaxies A survey of small-scale extremes in extinction at low Galactic latitudes using IRAS galaxies

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....104.1505l&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 104, no. 4, p. 1505-1524.

Astronomy and Astrophysics

Astronomy

8

Astronomical Photometry, Galaxies, Infrared Astronomy Satellite, Interstellar Extinction, Sky Surveys (Astronomy), Charge Coupled Devices, H I Regions

Scientific paper

Optical CCD and 21 cm H I data are combined here via the Tully-Fisher relation to study the Galactic extinction in the V an I bands over an angular scale of a few arcmin at absolute Galactic latitudes between 2 and 16 deg. Extinctions in V and I bands are found to be linearly correlated with A(I) about 0.58 A(V), with no noticeable environmental dependence and consistent with existing results of Galactic reddening. There is a large scatter in the simple linear relation with csc /b/, confirming the existence of 'holes' and patches at low Galactic latitudes. The mean correlation between Galactic extinction and H I column density over a comparable angular scale is also found to be consistent with those at high latitudes over large angular scales. Correlation is also found between optical extinction and the IRAS 100 micron sky brightness, and this sky brightness is only slightly worse than H I column density as an indicator for optical extinction.

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