SDSS-IV MaNGA: Bar pattern speed estimates with the Tremaine-Weinberg method and their error sources
@article{GarmaOehmichen2019SDSSIVMB, title={SDSS-IV MaNGA: Bar pattern speed estimates with the Tremaine-Weinberg method and their error sources}, author={Luis Garma-Oehmichen and M. Cano-d'iaz and H. M. Hern'andez-Toledo and E. Aquino-Ort'iz and O. Valenzuela and J A L Aguerri and Sebasti'an F. S'anchez and Michael R. Merrifield}, journal={Monthly Notices of the Royal Astronomical Society}, year={2019} }
Estimating the bar pattern speed (Ωbar) is one of the main challenges faced in understanding the role of stellar bars in galaxy dynamical evolution. This work aims to characterise different uncertainty sources affecting the Tremaine Weinberg (TW)-method to study the correlation between bar and galaxies physical parameters. We use a sample of 15 MaNGA SDSS-IV galaxies and 3 CALIFA galaxies from Aguerri et al. (2015). We studied the errors related with (i) galaxy centre determination, (ii) disc…
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References
SHOWING 1-3 OF 3 REFERENCES
SDSS-IV MaNGA: stellar population gradients within barred galaxies
- PhysicsMonthly Notices of the Royal Astronomical Society: Letters
- 2019
Bars in galaxies are thought to stimulate both inflow of material and radial mixing along them. Observational evidence for this mixing has been inconclusive so far however, limiting the evaluation of…
Testing the Tremaine–Weinberg Method Applied to Integral-field Spectroscopic Data Using a Simulated Barred Galaxy
- PhysicsThe Astrophysical Journal
- 2019
Tremaine and Weinberg (TW) proposed a conceptually simple procedure relying on long-slit spectroscopy to measure the pattern speeds of bars (Ωp) in disk galaxies. Using a simulated galaxy, we…
Memorie della Società Astronomica Italiana Supplementi - Vol. 1 Computational Astrophysics in Italy: Methods and Tools Prima Riunione Nazionale
- Physics
- 2008
A new, momentum preserving fast Poisson solver for N-body systems sharing effective O(N) computational complexity, has been recently developed by Dehnen (2000, 2002). We have implemented the proposed…