Photographic surface photometry of the Milky Way. II - Surface photometry in the region of the dark cloud 'Coalsack' in U,B,V,R

Details Photographic surface photometry of the Milky Way. II - Surface photometry in the region of the dark cloud 'Coalsack' in U,B,V,R Photographic surface photometry of the Milky Way. II - Surface photometry in the region of the dark cloud 'Coalsack' in U,B,V,R

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...114...60s&link_type=abstract

Astronomy and Astrophysics, vol. 114, no. 1, Oct. 1982, p. 60-70. In German.

Astronomy and Astrophysics

Astrophysics

9

Astronomical Photometry, Brightness Distribution, Milky Way Galaxy, Airglow, Astronomical Photography, Error Analysis, Galactic Structure, Interstellar Extinction, Interstellar Matter

Scientific paper

Sixteen photographic plates were used to study the surface brightness distribution in UBVR of the Coalsack region of the Galaxy, over an area of 30 x 30 deg centered on l 303 deg, b zero deg, with a resolution of 0.3 deg. During the averaging of all plates of one spectral range, the inner error, or mutual deviation of intensities measured on different plates, was calculated and split into its additive and multiplicative components to facilitate interpretation. The present photometry is compared with the V surface photometry of Smith et al. (1970), the U photometry of Pfleiderer and Mayer (1971), and the B photometries of Mattila (1973) and Classen (1976). The Coalsack is not prominent in any color map, confirming calculations of Mattila (1976), which show that the reddening of dark clouds due to the scattered light is substantially less than the reddening of stars.

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