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Planetary Nebulae as Mass Tracers of their Parent Galaxies: Biases in the estimate of the kinematical quantities

Napolitano, Nicola R; Arnaboldi, Magda; Freeman, Kenneth; Capaccioli, Massimo


Multi-object and multi-fiber spectrographs on 4 and 8 m telescopes make it possible to use extragalactic planetary nebulae (PNe) in the outer halos of early-type galaxies as kinematical tracers, where classical techniques based on integrated stellar light fail. Until now, published PNe radial velocity samples are small, with only a few tens of radial velocity measurements (except for a few cases like NGC 5128 or M 31), causing uncertainties in the mass and angular momentum estimates based on...[Show more]

CollectionsANU Research Publications
Date published: 2001
Type: Journal article
Source: Astronomy and Astrophysics


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