The structure of the Sculptor system

Details The structure of the Sculptor system The structure of the Sculptor system

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85.1587d&link_type=abstract

Astronomical Journal, vol. 85, Dec. 1980, p. 1587-1591.

Astronomy and Astrophysics

Astronomy

16

Elliptical Galaxies, Galactic Structure, Ellipticity, Isophotes, Magnitude, Radial Velocity, Radii, Star Distribution, Variable Stars

Scientific paper

The structure of Sculptor is determined from counts of over 22,000 stars on prints made from a CTIO 4-m plate. The ellipticities of the isophotes of constant density vary from 0.0 at the center to about 0.3 for r in the range 15-25 arcmin. The lack of a measured value of the foreground stellar density does not make it possible to obtain a definitive tidal radius, but a lower limit of rt = 75 arcmin is indicated. Scuptor is much bigger than previously believed.

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