On position angle errors in the Tremaine-Weinberg method
نویسندگان
چکیده
منابع مشابه
On position angle errors in the Tremaine–Weinberg method
I show that Tremaine–Weinberg (TW) measurements of bar pattern speeds are sensitive to errors in the position angle of the disc, PAdisc. I use an N-body experiment to measure these errors; for typical random PAdisc errors, the resulting scatter in the measured values of the dimensionless bar speed parameter R (defined as the ratio of the corotation radius to the bar semi-major axis) is of the o...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2003
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.2003.06620.x