DYNAMICS OF ELLIPTICAL GALAXIES IN THE FRAMEWORK OF MODIFIED NEWTONIAN DYNAMICS | Zendy

Yong Tian | Zendy; ChungMing Ko | Zendy

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DYNAMICS OF ELLIPTICAL GALAXIES IN THE FRAMEWORK OF MODIFIED NEWTONIAN DYNAMICS

Author(s) -

Yong Tian,

ChungMing Ko

Publication year - 2015

Publication title -

publications of the korean astronomical society

Language(s) - English

Resource type - Journals

eISSN - 2287-6936

pISSN - 1225-1534

DOI - 10.5303/pkas.2015.30.2.375

Subject(s) - dynamics (music) , modified newtonian dynamics , newtonian dynamics , physics , astrophysics , galaxy , classical mechanics , galaxy formation and evolution , galaxy rotation curve , acoustics

Planetary nebula in elliptical galaxies pose a problem in dark matter theory. Using data from the Planetary Nebula Spectrograph (PN. S), Romanowsky et al. (2003) reported that less dark matter than expected was found within 5 to 6 effective radii of three elliptical galaxies. We attempt to explain similar observations of elliptical galaxies with MOdiffed Newtonian Dynamics (MOND). We collect 16 elliptical galaxies with planetary nebulae from the public web data of PN. S. We investigate the dynamical behavior by analyzing the line-of-sight velocity dispersion in the framework of MOND.

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