Astrophysics

   

A `constant Lagrangian' Fit of the Galaxy Rotation Curves of the `F-Series' from the Sparc Database.

Authors: E.P.J. de Haas

In this paper I apply the `constant Lagrangian' model for galactic dynamics to the F-series of the SPARC database. I will fit the experimental rotation curves of the $16$ `F' galaxies from this database using the dual fit approach. This means that one fit is made for the stars dominated region of one galaxy. Another fit is added for the gas dominated region of the same galaxy. The dual fit approach results in a rotation curve fit that mostly remains within the observational error margins. For some galaxies of the series a single model already remains nicely within the error margins and then doesn't really justify a dual fit. Some galaxies are more complicated and problably need a threefold fit. This dual fit approach follows the mass composition of galaxies as composed of a bulge, possibly a disk and mostly extended gas clouds.

Comments: 31 Pages.

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Submission history

[v1] 2018-05-08 10:35:45

Unique-IP document downloads: 16 times

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