Radial acceleration relation of elliptical galaxies in MaNGA

Authors

Arcy Layne L. Sace ⋅ PH Philippine Space Agency
Paul Leonard Atchong C. Hilario ⋅ PH Philippine Space Agency
Dominic P. Guaña ⋅ PH Philippine Space Agency

Abstract

The relationship between the total and baryonic acceleration of a galaxy is the Radial Acceleration Relation (RAR). Data of 88 elliptical galaxies were selected from Sloan Digital Sky Survey Data Release 18 (SDSS DR18), and the M_gas of each are specifically taken from the Mapping of Nearby Galaxies at Apache Point Observatory (MaNGA) data set. Hernquist model is used for the baryonic component of the ellipticals, as well as for the dark matter halo and in Modified Newtonian Dynamics (MOND). The RAR results of the samples are separated into high and low mass galaxies, and their M_dyn−M_bar relationship are compared. A value for the MOND acceleration constant a₀ averaged across all 88 elliptical galaxies is found to be within (1.648−3.501) × 10⁻¹⁰ m/s² when gas mass is considered.

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Issue

2023: Proceedings of the 41st Samahang Pisika ng Pilipinas Physics Conference

Physics: Connecting islands of knowledge
19-21 July 2023, Del Carmen, Siargao Island

Please visit the SPP2023 activity webpage for more information on this year's Physics Congress.

Article ID

SPP-2023-2D-05

Section

Cosmology and Astrophysics

Published

2023-07-07

How to Cite

[1]

ALL Sace, PLAC Hilario, and DP Guaña, Radial acceleration relation of elliptical galaxies in MaNGA, Proceedings of the Samahang Pisika ng Pilipinas 41, SPP-2023-2D-05 (2023). URL: https://proceedings.spp-online.org/article/view/SPP-2023-2D-05.