A high-resolution rotation curve of NGC 6822

Details A high-resolution rotation curve of NGC 6822 A high-resolution rotation curve of NGC 6822

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..220..373d&link_type=abstract

International Astronomical Union Symposium no. 220, held 21 - 25 July, 2003 in Sydney, Australia. Eds: S. D. Ryder, D. J. Pisano

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a high-resolution rotation curve of the Local Group dwarf irregular NGC 6822, obtained with the Australia Telescope Compact Array. The best curve has a resolution of 8 arcsec or 20 pc and contains some 250 independent points. NGC 6822 is a very dark matter-dominated galaxy. There is no evidence for the presence of a steep density cusp down to scales of ˜ 20 pc, in conflict with the predictions of CDM.

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