Other
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.5107s&link_type=abstract
American Astronomical Society, 185th AAS Meeting, #51.07; Bulletin of the American Astronomical Society, Vol. 26, p.1396
Other
Scientific paper
We have measured an absolute proper motion with uncertainties <=0.025 arcsec/century in each coordinate for the Sculptor dwarf spheroidal galaxy. Sculptor is a companion to the Milky Way at a distance of 79 kpc from us. This result is based on 26 plates taken over the course of more than half a century from four different telescopes, with the zero point of the absolute proper motion set by several background galaxies. Our proper motion uncertainty is similar to or smaller than those obtained by different groups for other distant satellites of the Galaxy. The motion of Sculptor, after correction for the solar peculiar velocity and the orbital motion of the LSR, is less than twice the uncertainty. Nevertheless, the direction of the motion is significant because it rules out motion along the Magellanic Stream, but allows motion (within 3 sigma ) toward the Fornax dwarf spheroidal galaxy. This research has been partially supported by the National Science Foundation.
Cudworth Kyle McC.
Schweitzer Andrea E.
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