SIMBAD references

2001MNRAS.320..124P - Mon. Not. R. Astron. Soc., 320, 124-130 (2001/January-1)

Evidence for a massive dark object in NGC 4350.

PIGNATELLI E., SALUCCI P. and DANESE L.

Abstract (from CDS):

In this work we build a detailed dynamic model for an S0 galaxy possibly hosting a central massive dark object (MDO). We show that the photometric profiles and the kinematics along the major and minor axes, including the h3 and h4 profiles, imply the presence of a central MDO of mass V2rotV2circ - ΔV2asymdrift, i.e. 0.3-2.8% of the mass derived for the stellar spheroidal component. Models without MDO are unable to reproduce the kinematic properties of the inner stars and of the rapidly rotating nuclear gas.

The stellar population consists of an exponential disc (27per cent of the light) and a diffuse spheroidal component (73per cent of the light) that cannot be represented by a simple de Vaucouleurs profile at any radius. The ML ratios we found for the stellar components (3.3 and 6.6 respectively) are typical of those of disc and elliptical galaxies.


Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): galaxies: individual: NGC 4350 - galaxies: kinematics and dynamics - galaxies: nuclei - galaxies: structure - dark matter

Simbad objects: 5

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