Mass decomposition of spiral galaxies from disc kinematics | Zendy

M. Persic | Zendy; P. Salucci | Zendy

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Mass decomposition of spiral galaxies from disc kinematics

Author(s) -

M. Persic,

P. Salucci

Publication year - 1990

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/245.4.577

Subject(s) - physics , galaxy rotation curve , spiral galaxy , astrophysics , halo , disc galaxy , spiral (railway) , galaxy , kinematics , luminosity , mass to light ratio , radius , rotation (mathematics) , elliptical galaxy , luminosity function , astronomy , geometry , classical mechanics , mathematical analysis , mathematics , computer security , computer science

Summary We devise a method for the disc/halo mass decomposition of the rotation curves of spiral galaxies that was outlined by us in a previous paper. Upon application to a larger sample of 58 spirals, we confirm our earlier results. In particular, we find that the disc-to-halo mass ratio at the optical radius, Mdisc/Mhalo, is a strong function of luminosity, Mdisc/Mhalo α LB2/3.

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