Velocity dispersion of M87 using a population model

Details Velocity dispersion of M87 using a population model Velocity dispersion of M87 using a population model

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pasp...92..149a&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 92, Apr.-May 1980, p. 149-153.

Astronomy and Astrophysics

Astronomy

2

Elliptical Galaxies, Giant Stars, Stellar Motions, Stellar Spectra, Velocity Measurement, Earth Motion, Stellar Luminosity, Stellar Models, Ubv Spectra

Scientific paper

The velocity dispersion of M 87 (NGC 4486) is determined using (1) a single star of class K0 III and (2) two different population models to represent the spectral region of the G-band. Although the models fit the overall spectrum better than the single-star, there is only a small difference in the derived velocity dispersion. This work revises the earlier velocity dispersion result of Brandt and Roosen (1969) down to 350 km/sec, in agreement with Faber and Jackson (1976) and Sargent et al. (1978).

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