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arXiv · 1804.01581

A Test of MONDian Gravity in $\sim$300 pressure supported elliptical galaxies from the MaNGA survey

R. Durazo·X. Hernandez·B. Cervantes Sodi·S. F. Sanchez
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Abstract

Pressure supported systems modeled under MONDian extended gravity are expected to show an outer flattening in their velocity dispersion profiles. A characteristic scaling between the amplitude of the asymptotic velocity dispersion and the radius at which the flattening occurs is also expected. By comprehensively analyzing the dynamical behavior of $\sim$300 extremely low rotating elliptical galaxies from the MaNGA survey, we show this type of pressure supported systems to be consistent with MONDian expectations, for a range of central velocity dispersion values of $60 km/s < \sigma_{central}< 280 km/s $ and asymptotic velocity dispersion values of $28km/s < \sigma_{\infty}<250 km/s$. We find that a universal velocity dispersion profile accurately describes the studied systems; the predicted kinematics of extended gravity are verified for all well observed galaxies.

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R. Durazo, X. Hernandez, B. Cervantes Sodi, S. F. Sanchez. 2018-04-04. A Test of MONDian Gravity in $\sim$300 pressure supported elliptical galaxies from the MaNGA survey. https://doi.org/10.3847/1538-4357%2Faacf97

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