Matches in SemOpenAlex for { <https://semopenalex.org/work/W2155013359> ?p ?o ?g. }
- W2155013359 abstract "Context. The bar pattern speed (Ω_b) is defined as the rotational frequency of the bar, and it determines the bar dynamics. Several methods have been proposed for measuring Ω_b. The non-parametric method proposed by Tremaine & Weinberg (1984, ApJ, 282, L5; TW) and based on stellar kinematics is the most accurate. This method has been applied so far to 17 galaxies, most of them SB0 and SBa types. Aims. We have applied the TW method to a new sample of 15 strong and bright barred galaxies, spanning a wide range of morphological types from SB0 to SBbc. Combining our analysis with previous studies, we investigate 32 barred galaxies with their pattern speed measured by the TW method. The resulting total sample of barred galaxies allows us to study the dependence of Ω_b on galaxy properties, such as the Hubble type. Methods. We measured Ω_b using the TW method on the stellar velocity maps provided by the integral-field spectroscopy data from the CALIFA survey. Integral-field data solve the problems that long-slit data present when applying the TW method, resulting in the determination of more accurate Ω_b. In addition, we have also derived the ratio R of the corotation radius to the bar length of the galaxies. According to this parameter, bars can be classified as fast (R 1.4). Results. For all the galaxies, R is compatible within the errors with fast bars. We cannot rule out (at 95% level) the fast bar solution for any galaxy. We have not observed any significant trend between R and the galaxy morphological type. Conclusions. Our results indicate that independent of the Hubble type, bars have been formed and then evolve as fast rotators. This observational result will constrain the scenarios of formation and evolution of bars proposed by numerical simulations." @default.
- W2155013359 created "2016-06-24" @default.
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- W2155013359 date "2015-04-01" @default.
- W2155013359 modified "2023-10-18" @default.
- W2155013359 title "Bar pattern speeds in CALIFA galaxies. I. Fast bars across the Hubble sequence" @default.
- W2155013359 cites W1647622509 @default.
- W2155013359 cites W1868097904 @default.
- W2155013359 cites W1907249856 @default.
- W2155013359 cites W1911431810 @default.
- W2155013359 cites W1964529284 @default.
- W2155013359 cites W1967262272 @default.
- W2155013359 cites W1968584055 @default.
- W2155013359 cites W1972755417 @default.
- W2155013359 cites W1977328085 @default.
- W2155013359 cites W1978809488 @default.
- W2155013359 cites W1980009407 @default.
- W2155013359 cites W1980954758 @default.
- W2155013359 cites W1983578725 @default.
- W2155013359 cites W1988041030 @default.
- W2155013359 cites W1988425678 @default.
- W2155013359 cites W1989685397 @default.
- W2155013359 cites W1989959791 @default.
- W2155013359 cites W1993545312 @default.
- W2155013359 cites W2000423827 @default.
- W2155013359 cites W2003523175 @default.
- W2155013359 cites W2004701242 @default.
- W2155013359 cites W2004996112 @default.
- W2155013359 cites W2006331876 @default.
- W2155013359 cites W2009128164 @default.
- W2155013359 cites W2010387598 @default.
- W2155013359 cites W2018230337 @default.
- W2155013359 cites W2024945519 @default.
- W2155013359 cites W2030326695 @default.
- W2155013359 cites W2031807345 @default.
- W2155013359 cites W2032315627 @default.
- W2155013359 cites W2034040738 @default.
- W2155013359 cites W2034609095 @default.
- W2155013359 cites W2037683220 @default.
- W2155013359 cites W2037899373 @default.
- W2155013359 cites W2039097316 @default.
- W2155013359 cites W2040123446 @default.
- W2155013359 cites W2042786497 @default.
- W2155013359 cites W2044689810 @default.
- W2155013359 cites W2049174381 @default.
- W2155013359 cites W2050371636 @default.
- W2155013359 cites W2051506618 @default.
- W2155013359 cites W2058070600 @default.
- W2155013359 cites W2059393156 @default.
- W2155013359 cites W2059588423 @default.
- W2155013359 cites W2060512799 @default.
- W2155013359 cites W2060945250 @default.
- W2155013359 cites W2061391030 @default.
- W2155013359 cites W2062405470 @default.
- W2155013359 cites W2065091037 @default.
- W2155013359 cites W2066452342 @default.
- W2155013359 cites W2074194121 @default.
- W2155013359 cites W2076644889 @default.
- W2155013359 cites W2080476365 @default.
- W2155013359 cites W2084822886 @default.
- W2155013359 cites W2086348625 @default.
- W2155013359 cites W2086991550 @default.
- W2155013359 cites W2088034685 @default.
- W2155013359 cites W2089457369 @default.
- W2155013359 cites W2090482424 @default.
- W2155013359 cites W2090887265 @default.
- W2155013359 cites W2095730734 @default.
- W2155013359 cites W2099424148 @default.
- W2155013359 cites W2115509165 @default.
- W2155013359 cites W2119821895 @default.
- W2155013359 cites W2121729638 @default.
- W2155013359 cites W2122666823 @default.
- W2155013359 cites W2124199755 @default.