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- W2800680069 startingPage "932" @default.
- W2800680069 abstract "Since the discovery that the majority of low-redshift galaxies exhibit some level of spiral structure, a number of theories have been proposed as to why these patterns exist. A popular explanation is a process known as swing amplification, yet there is no observational evidence to prove that such a mechanism is at play. By using a number of measured properties of galaxies, and scaling relations where there are no direct measurements, we model samples of SDSS and S$^4$G spiral galaxies in terms of their relative halo, bulge and disc mass and size. Using these models, we test predictions of swing amplification theory with respect to directly measured spiral arm numbers from Galaxy Zoo 2. We find that neither a universal cored or cuspy inner dark matter profile can correctly predict observed numbers of arms in galaxies. However, by invoking a halo contraction/expansion model, a clear bimodality in the spiral galaxy population emerges. Approximately 40 per cent of unbarred spiral galaxies at $z lesssim 0.1$ and $mathrm{M_*} gtrsim 10^{10} mathrm{M_odot}$ have spiral arms that can be modelled by swing amplification. This population display a significant correlation between predicted and observed spiral arm numbers, evidence that they are swing amplified modes. The remainder are dominated by two-arm systems for which the model predicts significantly higher arm numbers. These are likely driven by tidal interactions or other mechanisms." @default.
- W2800680069 created "2018-05-17" @default.
- W2800680069 creator A5011626720 @default.
- W2800680069 creator A5039074972 @default.
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- W2800680069 creator A5062359754 @default.
- W2800680069 creator A5075874259 @default.
- W2800680069 creator A5077171074 @default.
- W2800680069 date "2018-05-05" @default.
- W2800680069 modified "2023-10-14" @default.
- W2800680069 title "Galaxy Zoo: constraining the origin of spiral arms" @default.
- W2800680069 cites W1507716615 @default.
- W2800680069 cites W1545762935 @default.
- W2800680069 cites W1631266121 @default.
- W2800680069 cites W1784081062 @default.
- W2800680069 cites W1810395999 @default.
- W2800680069 cites W1850315173 @default.
- W2800680069 cites W1964026845 @default.
- W2800680069 cites W1966752386 @default.
- W2800680069 cites W1969312167 @default.
- W2800680069 cites W1970706147 @default.
- W2800680069 cites W1970787119 @default.
- W2800680069 cites W1982379385 @default.
- W2800680069 cites W1985873501 @default.
- W2800680069 cites W1987522415 @default.
- W2800680069 cites W1999005727 @default.
- W2800680069 cites W2001138895 @default.
- W2800680069 cites W2002383459 @default.
- W2800680069 cites W2014592430 @default.
- W2800680069 cites W2014602460 @default.
- W2800680069 cites W2018494377 @default.
- W2800680069 cites W2022471557 @default.
- W2800680069 cites W2023037133 @default.
- W2800680069 cites W2025868866 @default.
- W2800680069 cites W2026449691 @default.
- W2800680069 cites W2029444247 @default.
- W2800680069 cites W2036491734 @default.
- W2800680069 cites W2039414721 @default.
- W2800680069 cites W2041542911 @default.
- W2800680069 cites W2045782407 @default.
- W2800680069 cites W2046075055 @default.
- W2800680069 cites W2051924683 @default.
- W2800680069 cites W2054103046 @default.
- W2800680069 cites W2059248724 @default.
- W2800680069 cites W2061574746 @default.
- W2800680069 cites W2061755396 @default.
- W2800680069 cites W2062650983 @default.
- W2800680069 cites W2067770583 @default.
- W2800680069 cites W2068185017 @default.
- W2800680069 cites W2068323001 @default.
- W2800680069 cites W2070419589 @default.
- W2800680069 cites W2070444660 @default.
- W2800680069 cites W2073424007 @default.
- W2800680069 cites W2079605176 @default.
- W2800680069 cites W2080259687 @default.
- W2800680069 cites W2080908476 @default.
- W2800680069 cites W2110208855 @default.
- W2800680069 cites W2110888897 @default.
- W2800680069 cites W2111402870 @default.
- W2800680069 cites W2120046836 @default.
- W2800680069 cites W2120682883 @default.
- W2800680069 cites W2124199755 @default.
- W2800680069 cites W2125094672 @default.
- W2800680069 cites W2131829012 @default.
- W2800680069 cites W2132538727 @default.
- W2800680069 cites W2134810325 @default.
- W2800680069 cites W2135625048 @default.
- W2800680069 cites W2136206232 @default.
- W2800680069 cites W2140102449 @default.
- W2800680069 cites W2143755952 @default.
- W2800680069 cites W2147357138 @default.
- W2800680069 cites W2154164465 @default.
- W2800680069 cites W2154677899 @default.
- W2800680069 cites W2156541224 @default.
- W2800680069 cites W2157917411 @default.
- W2800680069 cites W2159461184 @default.
- W2800680069 cites W2163075131 @default.
- W2800680069 cites W2165003596 @default.
- W2800680069 cites W2176059828 @default.
- W2800680069 cites W2177694045 @default.
- W2800680069 cites W2197944497 @default.
- W2800680069 cites W2270749470 @default.
- W2800680069 cites W2404361443 @default.
- W2800680069 cites W2408708527 @default.
- W2800680069 cites W2467225246 @default.
- W2800680069 cites W2511212006 @default.
- W2800680069 cites W2523266658 @default.
- W2800680069 cites W2530211828 @default.
- W2800680069 cites W2541884613 @default.
- W2800680069 cites W2575798686 @default.
- W2800680069 cites W2592693034 @default.
- W2800680069 cites W2618971300 @default.
- W2800680069 cites W2746713734 @default.
- W2800680069 cites W2761541545 @default.
- W2800680069 cites W2786296307 @default.
- W2800680069 cites W2949915762 @default.
- W2800680069 cites W2989273194 @default.