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- W2887989425 abstract "We show how the Radon transform (defined as a series of line integrals through an image at different orientations and offsets from the origin) can be used as a simple, non-parametric tool to characterize galaxy velocity fields, specifically their global kinematic position angles (PAk) and any radial variation or asymmetry in PAk. This method is fast and easily automated, making it particularly beneficial in an era where integral field unit (IFU) and interferometric surveys are yielding samples of thousands of galaxies. We demonstrate the Radon transform by applying it to gas and stellar velocity fields from the first ∼2800 galaxies of the SDSS-IV MaNGA IFU survey. We separately classify gas and stellar velocity fields into five categories based on the shape of their radial PAk profiles. At least half of stellar velocity fields and two-thirds of gas velocity fields are found to show detectable deviations from uniform coplanar circular motion, although most of these variations are symmetric about the centre of the galaxy. The behaviour of gas and stellar velocity fields is largely independent, even when PAk profiles for both components are measured over the same radii. We present evidence that one class of symmetric PAk variations is likely associated with bars and/or oval distortions, while another class is more consistent with warped discs. This analysis sets the stage for more in-depth future studies which explore the origin of diverse kinematic behaviour in the galaxy population." @default.
- W2887989425 created "2018-08-22" @default.
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- W2887989425 date "2018-07-30" @default.
- W2887989425 modified "2023-10-03" @default.
- W2887989425 title "SDSS-IV MaNGA: characterizing non-axisymmetric motions in galaxy velocity fields using the Radon transform" @default.
- W2887989425 cites W1487982544 @default.
- W2887989425 cites W1658947143 @default.
- W2887989425 cites W1906493082 @default.
- W2887989425 cites W1911431810 @default.
- W2887989425 cites W1915804417 @default.
- W2887989425 cites W1975095224 @default.
- W2887989425 cites W1977328085 @default.
- W2887989425 cites W1990349932 @default.
- W2887989425 cites W1999983341 @default.
- W2887989425 cites W2001717952 @default.
- W2887989425 cites W2002592779 @default.
- W2887989425 cites W2004490602 @default.
- W2887989425 cites W2010452695 @default.
- W2887989425 cites W2022926193 @default.
- W2887989425 cites W2023037133 @default.
- W2887989425 cites W2024897607 @default.
- W2887989425 cites W2035871342 @default.
- W2887989425 cites W2039949187 @default.
- W2887989425 cites W2045674582 @default.
- W2887989425 cites W2057649147 @default.
- W2887989425 cites W2060499149 @default.
- W2887989425 cites W2061866732 @default.
- W2887989425 cites W2062086183 @default.
- W2887989425 cites W2063568047 @default.
- W2887989425 cites W2064350356 @default.
- W2887989425 cites W2066842548 @default.
- W2887989425 cites W2071741925 @default.
- W2887989425 cites W2079883753 @default.
- W2887989425 cites W2082017278 @default.
- W2887989425 cites W2088034685 @default.
- W2887989425 cites W2090660714 @default.
- W2887989425 cites W2093347788 @default.
- W2887989425 cites W2094246362 @default.
- W2887989425 cites W2097453538 @default.
- W2887989425 cites W2105802267 @default.
- W2887989425 cites W2111356925 @default.
- W2887989425 cites W2119277713 @default.
- W2887989425 cites W2122366938 @default.
- W2887989425 cites W2122952850 @default.
- W2887989425 cites W2128886718 @default.
- W2887989425 cites W2130527528 @default.
- W2887989425 cites W2130707009 @default.
- W2887989425 cites W2136623067 @default.
- W2887989425 cites W2140825014 @default.
- W2887989425 cites W2142918001 @default.
- W2887989425 cites W2143017483 @default.
- W2887989425 cites W2147670132 @default.
- W2887989425 cites W2152214714 @default.
- W2887989425 cites W2157495662 @default.
- W2887989425 cites W2159892122 @default.
- W2887989425 cites W2168175751 @default.
- W2887989425 cites W2474521476 @default.
- W2887989425 cites W2484772434 @default.
- W2887989425 cites W2531360978 @default.
- W2887989425 cites W2593224863 @default.
- W2887989425 cites W2740236269 @default.
- W2887989425 cites W2761541545 @default.
- W2887989425 cites W2949503901 @default.
- W2887989425 cites W3099229315 @default.
- W2887989425 cites W3099516005 @default.
- W2887989425 cites W3100032906 @default.
- W2887989425 cites W3100416241 @default.
- W2887989425 cites W3100424774 @default.
- W2887989425 cites W3102274830 @default.
- W2887989425 cites W3102514323 @default.
- W2887989425 cites W3102880284 @default.
- W2887989425 cites W3103124644 @default.
- W2887989425 cites W3103247671 @default.
- W2887989425 cites W3104573209 @default.
- W2887989425 cites W3105597481 @default.
- W2887989425 cites W3105803247 @default.
- W2887989425 cites W3106271465 @default.
- W2887989425 cites W3121770305 @default.
- W2887989425 cites W3123016217 @default.
- W2887989425 cites W3124057309 @default.
- W2887989425 cites W3125487458 @default.
- W2887989425 cites W3126095665 @default.
- W2887989425 cites W4211177544 @default.