Using an assumption about the monotony of spiral arms to determine the orientation angles of galaxies

Details Using an assumption about the monotony of spiral arms to determine the orientation angles of galaxies Using an assumption about the monotony of spiral arms to determine the orientation angles of galaxies

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010mnras.403.1625f&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 403, Issue 3, pp. 1625-1632.

Astronomy and Astrophysics

Astronomy

1

Galaxies: Spiral

Scientific paper

A method is proposed for the determination of the position and inclination angles of the plane of a spiral galaxy based on the assumption that every spiral arm is a monotonic function of the radius against azimuthal angle. This method may yield more accurate results than the more commonly employed isophote method, which is subject to a number of drawbacks. Analytical study, calibration against other methods and examples of application of the proposed method to real galaxies are presented.

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