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The orbital structure of the massive elliptical galaxy NGC 5846

Das, P; Gerhard, Ortwin; Coccato, L; Churazov, E.; Forman, W.; Finoguenov, A.; Bohringer, H.; Arnaboldi, Magda; Capaccioli, M; Cortesi, A.; De Lorenzi, F; Freeman, Kenneth

Description

We use density and temperature profiles obtained from XMM-Newton observations to derive a potential of NGC 5846 out to 11Re, thus probing the mass distribution deep into the halo. The inferred circular velocity is significantly higher than the extrapolation of dynamical models implying a halo, more massive than previously thought. Using an I-band surfacebrightness profile and a projected velocity dispersion profile consisting of long-slit kinematic measurements and planetary nebulae (PNe)...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/36999
Source: Astronomische Nachrichten
DOI: 10.1002/asna.200811052

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