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Velocity Dispersion in the Bulge of M31; Dynamical Model

Published online by Cambridge University Press:  14 August 2015

G. Monnet ,
A. Pellet  and
F. Simien
G. Monnet
Affiliation:
Observatoires de Marseille et de Lyon
A. Pellet
Affiliation:
Observatoires de Marseille et de Lyon
F. Simien
Affiliation:
Observatoires de Marseille et de Lyon

Extract

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1) Photometry from de Vaucouleurs 1958 shows a bulge obeying the r1/4 law up to less than 5 pc from the center with an effective radius re = 17′5. In the region from 0.01 to 0.2 re, equal luminosity curves are well approximated by similar ellipses of axial ratio 0.68. The reduced spatial density υ* and the reduced gravitationnal potential φ* (i.e. for a mass to luminosity ratio f equal to 1) can then be easily computed (Monnet and Simien 1977).

Type
III: Nearby Galaxies of Large Angular Size
Information
Symposium - International Astronomical Union , Volume 77: Structure and Properties of Nearby Galaxies , 1978 , pp. 159 - 161
Copyright
Copyright © Reidel 1978 

References

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