J/A+A/518/A44 NGC 1399 planetary nebula velocities (McNeil+, 2010)
Counter-dispersed slitless-spectroscopy technique: planetary nebula velocities
in the halo of NGC 1399.
McNeil E.K., Arnaboldi M., Freeman K.C., Gerhard O.E., Coccato L., Das P.
<Astron. Astrophys. 518, A44 (2010)>
=2010A&A...518A..44M 2010A&A...518A..44M (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Planetary nebulae
Keywords: galaxies: clusters: individual: NGC 1399 -
galaxies: elliptical and lenticular, cD - techniques: spectroscopic
Abstract:
Using a counter-dispersed slitless spectroscopy technique, we detect
and measure the line-of-sight velocities of 187 planetary nebulae
(PNe) around one of the nearest cD galaxies, NGC 1399, with FORS1 on
the VLT.
We describe the method for identifying and classifying the
emission-line sources and the procedure for computing their J2000
coordinates and velocities. The number of PN detections and the errors
in the velocity measurements (37km/s) indicate that this technique
is comparable to other methods.
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* *
* The PN line-of-sight velocities will be published with a *
* subsequent paper that also includes dynamical models of the system. *
* *
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(End) Patricia Vannier [CDS] 03-Sep-2010