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Data reduction and modelling of velocity fields for blue compact galaxies
2006 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Methods for data reduction of spectral data of the H-alpha line from Fabry-Perot observations with the CIGALE instrument of blue compact galaxies (BCGs) are developed. Velocity fields describing the dynamics of BCGs are created by converting redshifts of the H-alpha line (determined by fitting one or two Gaussian functions to each spectrum) to velocities for all measured points. Methods for extraction of position-velocity diagrams and slit rotation curves from velocity fields are created for a one dimensional description of the dynamics of a galaxy. A framework for creating synthetic velocity fields based on simple models is created. This framework is used to develop routines for fitting models of galaxy dynamics to BCGs for a two-dimensional description of the dynamics of the galaxies. Finally a tilted ring model is developed with the purpose of testing if rotation curves for BCGs can be extracted in the same way as for spiral galaxies.

Place, publisher, year, edition, pages
2006.
Keyword [en]
Physics Chemistry Maths
Keyword [sv]
Fysik, Kemi, Matematik
Identifiers
URN: urn:nbn:se:ltu:diva-51559ISRN: LTU-EX--06/354--SELocal ID: 8c5026c0-fd84-4787-9cf2-58465cef5b28OAI: oai:DiVA.org:ltu-51559DiVA: diva2:1024921
Subject / course
Student thesis, at least 30 credits
Educational program
Space Engineering, master's level
Examiners
Note
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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Language
  • de-DE
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  • Other locale
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Output format
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