Galaxy kinematics from counter-dispersed imaging

Details Galaxy kinematics from counter-dispersed imaging Galaxy kinematics from counter-dispersed imaging

1998-09-04

arxiv.org/abs/astro-ph/9809049v1

Astronomy and Astrophysics

Astrophysics

6 pages, LaTeX, Monthly Notices style, ps and eps included, loaded with \epsfbox submitted to Monthly Notices of the R.A.S. on

Scientific paper

10.1046/j.1365-8711.1999.02614.x

Determining the internal kinematics of a galaxy from planetary nebulae (PN) is usually a two step process in which the candidate PN are first identified in a target galaxy and then, in a follow up run, spectra are obtained. We have implemented a new technique in which two dispersed images at the wavelength of the [OIII] emission line at 5007A are combined to yield positions, magnitudes and velocities of the PN population in a single step. A reduction in observing time of about a factor 2 is attainable. We present here the proof-of-principle results.

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