Colloquium on 14 August 2014
Analysis of SALT Fabry-Perot medium resolution data

Details

Title: Analysis of SALT Fabry-Perot medium resolution data
Speaker: Blaise Tapsoba
Date: Thursday, 14 August 2014
Time: 11:00 - 11:20
Venue: SAAO Auditorium

Abstract

The RSS in Fabry-Perot medium-resolution mode on the SALT has been used to detect Halpha in two of the MHONGOOSE sample galaxies: NGC 7424  and NGC 7361.  The Halpha data is combined with lower resolution HI data from the VLA to produce a detailed mass model.  Both data sets are important, because the Halpha constrains the rising portion of the rotation curve, whereas, the HI data usually extends much farther out and will trace the dark matter dominated regions.  In this talk I will outline the techniques used to produce velocity maps from the Halpha data.

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