The rotation curves of the polar ring galaxy NGC 4650A under modified newtonian dynamics

Takahiro Morishima, Hideyuki Saio

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We have applied modified Newtonian dynamics (MOND) proposed by Milgrom to the polar ring galaxy NGC 4650A. The equatorial and polar rotation curves predicted by MOND for the luminous matter in the disk and polar ring are consistent with the observational data. This is remarkable because, in contrast to the conventional dark halo hypothesis, there is no adjusting parameter in MOND, except for the mass-luminosity ratio of visual components. More accurate kinematic data for the stellar disk of NGC 4650A is necessary to stringently test MOND.

Original languageEnglish
Pages (from-to)70-73
Number of pages4
JournalAstrophysical Journal
Volume450
Issue number1
DOIs
Publication statusPublished - 1995 Sep 1

Keywords

  • Galaxies: individual (NGC 4650)
  • Galaxies: kinematics and dynamics
  • Galaxies: structure
  • Gravitation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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