The Kinematics of the Planetary Nebula Population in M94

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dc.creatorDouglas, N. G.
dc.creatorGerssen, J.
dc.creatorKuijken, K.
dc.creatorMerrifield, M. R.
dc.date2000-03-20
dc.date.accessioned2026-07-07T01:52:48Z
dc.date.available2026-07-07T01:52:48Z
dc.descriptionThe planetary nebula populations of relatively nearby galaxies can be easily observed and provide both a distance estimate and a tool with which dynamical information can be obtained. Usually the requisite radial velocities are obtained by multi-object spectroscopy once the planetary nebulae have been located by direct imaging. Here we report on a technique for measuring planetary nebula kinematics using the double-beam ISIS spectrograph at the William Herschel Telescope in a novel slitless mode, which enables the detection and radial velocity measurements to be combined into a single step. The results on our first target, the Sab galaxy NGC 4736, allow the velocity dispersion of the stellar population in a disk galaxy to be traced out to four scale lengths for the first time and are consistent with a simple isothermal sheet model.
dc.description8 pages, 6 Postscript figures. Accepted for publication in MNRAS
dc.identifierhttps://arxiv.org/abs/astro-ph/0003281
dc.identifierhttp://arxiv.org/abs/astro-ph/0003281
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/747
dc.subjectAstrophysics
dc.titleThe Kinematics of the Planetary Nebula Population in M94
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