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Mass Determination in the Late-Type Spiral NGC 5457
Published online by Cambridge University Press: 26 May 2016
Abstract
We have performed a kinematical and dynamical analysis of the ionized gas content of the late–type spiral NGC 5457 (M101) by means of scanning Fabry–Perot interferometry. the purpose of this study is to gain insight into the dark matter content in this galaxy. A sample of 263 HII regions were catalogued. We calculated radial velocity and velocity dispersions. From the dynamics of the ionized gas we were able to infer a mass of 9.8 × 1010 M⊙ inside a radius of 4'8 (or 10 kpc).
- Type
- Part 9: Disks
- Information
- Symposium - International Astronomical Union , Volume 220: Dark Matter in Galaxies , 2004 , pp. 321 - 322
- Copyright
- Copyright © Astronomical Society of the Pacific 2004