Clustering studies of radio-selected galaxies

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dc.contributor.advisorCress, Catherine
dc.contributor.authorPassmoor, Sean Stuart
dc.contributor.otherDept. of Physics
dc.contributor.otherFaculty of Science
dc.date.accessioned2013-07-25T13:35:51Z
dc.date.accessioned2024-05-14T13:26:39Z
dc.date.available2012/03/22 12:07
dc.date.available2012/03/22
dc.date.available2013-07-25T13:35:51Z
dc.date.available2024-05-14T13:26:39Z
dc.date.issued2011
dc.descriptionPhilosophiae Doctor - PhDen_US
dc.description.abstractWe investigate the clustering of HI-selected galaxies in the ALFALFA survey and compare results with those obtained for HIPASS. Measurements of the angular correlation function and the inferred 3D-clustering are compared with results from direct spatial-correlation measurements. We are able to measure clustering on smaller angular scales and for galaxies with lower HI masses than was previously possible. We calculate the expected clustering of dark matter using the redshift distributions of HIPASS and ALFALFA and show that the ALFALFA sample is somewhat more anti-biased with respect to dark matter than the HIPASS sample. We are able to conform the validity of the dark matter correlation predictions by performing simulations of the non-linear structure formation. Further we examine how the bias evolves with redshift for radio galaxies detected in the the first survey.en_US
dc.description.countrySouth Africa
dc.identifier.urihttps://hdl.handle.net/10566/15013
dc.language.isoenen_US
dc.publisherUniversity of the Western Capeen_US
dc.rights.holderUniversity of the Western Capeen_US
dc.subjectNeutral-Hydrogenen_US
dc.subjectRadio Astronomyen_US
dc.subjectRadio Spectral Lineen_US
dc.subjectRadio Continuumen_US
dc.subjectClustering Statisticsen_US
dc.subjectLarge Scale Structureen_US
dc.subjectBias-Statisticsen_US
dc.subjectCorrelation Functionen_US
dc.subjectEvolution-Biasen_US
dc.titleClustering studies of radio-selected galaxiesen_US
dc.typeThesisen_US

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