Preliminary proper motion analysis of the Carina dwarf spheroidal

Details Preliminary proper motion analysis of the Carina dwarf spheroidal Preliminary proper motion analysis of the Carina dwarf spheroidal

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..248..492c&link_type=abstract

A Giant Step: from Milli- to Micro-arcsecond Astrometry, Proceedings of the International Astronomical Union, IAU Symposium, Vol

Astronomy and Astrophysics

Astronomy

Galaxies: Dwarf, Galaxies: Individual (Carina Dsph), Astrometry

Scientific paper

We present preliminary results from a proper motion study of the Carina dwarf spheroidal galaxy. Our proper motions show a scatter of ~1.1 mas yr-1 per Carina member star, and we determinate the mean ensemble motion to an accuracy of ~7 mas century-1. While this is a precise measurement of the relative proper motions of Carina members, our correction to an absolute frame is limited by the small number of measured QSOs in the field.

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