Surface-brightness distribution across M31 arm S4

Details Surface-brightness distribution across M31 arm S4 Surface-brightness distribution across M31 arm S4

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pazh...11..178g&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 11, Mar. 1985, p. 178-183) Soviet Astronomy Letters (ISSN 0360-0327), vol. 11, Mar.-Apr

Astronomy and Astrophysics

Astronomy

Andromeda Galaxy, Brightness Distribution, Spiral Galaxies, Astronomical Photometry, Density Wave Model, Ubv Spectra

Scientific paper

Analysis of the U, B, V surface-brightness distribution across M31 spiral arm S4 shows that peak brightness is reached near the inner edge. In fact, as indicated by a photometric profile along the M31 major axis, arms 3, 4, 5 all display a marked asymmetry, with their surface-brightness maximum shifted toward their inner edges. Arms 6, 7 have peak intensity along their midlines. The results obtained are consistent with the predictions of density-wave theory.

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