The structure of spiral arm S6 in the Andromeda Nebula

Details The structure of spiral arm S6 in the Andromeda Nebula The structure of spiral arm S6 in the Andromeda Nebula

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pazh....8..339e&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 8, June 1982, p. 339-346.) Soviet Astronomy Letters, vol. 8, May-June 1982, p. 184-188.

Astronomy and Astrophysics

Astronomy

1

Andromeda Galaxy, Galactic Structure, Star Distribution, Angular Velocity, Astronomical Photography, Histograms

Scientific paper

The star distribution across spiral arm S6 in Baade's M31 field IV is investigated. The brightest stars congregate toward the arm midline, along which maximum star density also occurs. The symmetric structure of S6 may result from its being located near the corotation radius, as indicated by the spiral-pattern rotational velocity of approximately 10 km/sec-kpc, derived from the Cepheid age gradient in S4. Arm S6 has features similar to the galactic spiral arms in the solar neighborhood.

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