SDSS-IV MaNGA: A Distinct Mass Distribution Explored in Slow-Rotating Early-type Galaxies

Abstract

We study the radial acceleration relation (RAR) for early-type galaxies (ETGs) in the SDSS MaNGA MPL5 dataset. The complete ETG sample show a slightly offset RAR from the relation reported by McGaugh et al. (2016) at the low-acceleration end; we find that the deviation is due to the fact that the slow rotators show a systematically higher acceleration relation than the McGaugh's RAR, while the fast rotators show a consistent acceleration relation to McGaugh's RAR. There is a 1σsignificant difference between the acceleration relations of the fast and slow rotators, suggesting that the acceleration relation correlates with the galactic spins, and that the slow rotators may have a different mass distribution compared with fast rotators and late-type galaxies. We suspect that the acceleration relation deviation of slow rotators may be attributed to more galaxy merger events, which would disrupt the original spins and correlated distributions of baryons and dark matter orbits in galaxies.

Revised to match the publication version

References in corpus (15)

• Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
• Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
• Evolutionary Stellar Population Synthesis with MILES. Part I: The Base Models and a New Line Index System
• The SAURON project -- IX. A kinematic classification for early-type galaxies
• The Radial Acceleration Relation in Rotationally Supported Galaxies
• A systematic variation of the stellar initial mass function in early-type galaxies
• Measuring the inclination and mass-to-light ratio of axisymmetric galaxies via anisotropic Jeans models of stellar kinematics
• The MaNGA Integral Field Unit Fiber Feed System for the Sloan 2.5 m Telescope
• The Data Reduction Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey
• One Law To Rule Them All: The Radial Acceleration Relation of Galaxies
• SDSS-IV MaNGA IFS Galaxy Survey --- Survey Design, Execution, and Initial Data Quality
• The Origin and Evolution of Fast and Slow Rotators in the Illustris Simulation
• SDSS-IV MaNGA: variation of the stellar initial mass function in spiral and early-type galaxies
• Systematic trends in total-mass profiles from dynamical models of early-type galaxies
• Investigating the radial acceleration relation in early-type galaxies using the Jeans analysis

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• Galaxy Rotation Coherent with the Motions of Neighbors: Discovery of Observational Evidence
• Lessons on Star-forming Ultra-diffuse Galaxies from The Stacked Spectra of Sloan Digital Sky Survey
• Study of gravitational fields and globular cluster systems of early-type galaxies
• The underlying radial acceleration relation
• Mass-Velocity Dispersion Relation in HIFLUGCS Galaxy Clusters
• The Next Generation Fornax Survey (NGFS): VI. The Alignment of Dwarf Galaxies in The Fornax Cluster
• There is no universal acceleration scale in galaxies
• Testing the Collisionless Nature of Dark Matter with the Radial Acceleration Relation in Galaxy Clusters
• The Formation and Evolution of Massive Galaxies
• Origin of the spectacular tidal shells of galaxy NGC474
• SDSS-IV MaNGA: Cannibalism Caught in the Act -- on the Frequency of Occurrence of Multiple Cores in Brightest Cluster Galaxies