Change search
ReferencesLink to record
Permanent link

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

Open Access in DiVA

fulltext(752 kB)0 downloads
File information
File name FULLTEXT01.pdfFile size 752 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

ReferencesLink to record
Permanent link

Direct link