Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aj....112.1894a&link_type=abstract
Astronomical Journal v.112, p.1894
Astronomy and Astrophysics
Astronomy
2
Galaxies: Kinematics And Dynamics, Galaxies: Spiral, Galaxies: Individual: Ngc 5055
Scientific paper
The morphological properties of the central 1.9 x 2.8 arcmin region of NGC 5055 have been studied on the basis of BVRI and Hα CCD imaging and photometry. Intensity and color profiles, together with isophotal contours have been analyzed and compared with kinematical data from high spatial resolution spectroscopy which was presented in a previous paper. A study is carried out on the extinction by dust in the galaxy. It is found that the extinction law can be obtained from the examination of the colors of a set of 18 OB associations distributed across the galaxy. In particular, we found that dust absorption along the spiral structure can be roughly reproduced by a linear outward decreasing law, with a central value of Anu_ ~ 3-4 mag.
Acarreta Juan Ramon
Cruz-Gonzalez G.
Mampaso Antonio
Manteiga Minia
Pismis Paris
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