A near-infrared faint galaxy survey : evolution and the cosmological geometry from K band photometry

dc.contributor.author Gardner, Jonathan Perry en_US
dc.date.accessioned 2009-07-15T17:14:53Z
dc.date.available 2009-07-15T17:14:53Z
dc.date.issued 1992 en_US
dc.description Thesis (Ph. D.)--University of Hawaii at Manoa, 1992. en_US
dc.description Includes bibliographical references. en_US
dc.description Microfiche. en_US
dc.description viii, 152 leaves, bound ill. 29 cm en_US
dc.description.abstract The results of four K band surveys of the extragalactic sky are presented. Each survey was designed to balance depth with area of coverage, and a sufficient number of galaxies was studied at each magnitude from K=12 to K=22 to provide good statistics. Each survey area was also observed in the B and I bands. Methods for making long exposures in the near-infrared and optical are described. The K band number counts are compiled. The excess seen in the B band number counts is not seen in the K band number counts, and a change in slope is seen in the K counts at K=17. The number count data are shown to be consistent with the measured B-K color, as the K band selected sample becomes rapidly bluer after turning over at K=17. The I-K colors are presented and it is argued that there is a deficiency of galaxies with the colors of unevolved ell1pticalsat z = 1. The B-K colors are shown to move away from the no-evolution model beginning at K = 17. The position of the galaxies on the B-1 vs I-K plot are consistent with these arguments. The surface brightness of the galaxies is analyzed and it is argued that variation in surface brightness causes no systematic bias in the number count data. Various aspects of the data are compared with models of primeval galaxies and galaxy evolution. The K band number counts are compared with a model of pure luminosity evolution, a cosmological constant model and a merging model. It is argued that the merging model is the best explanation for all of the data, although the model needs to be modified before it will provide a good fit to the number counts. en_US
dc.identifier.uri http://hdl.handle.net/10125/9347
dc.language.iso en-US en_US
dc.relation Theses for the degree of Doctor of Philosophy (University of Hawaii at Manoa). Astronomy; no. 2811 en_US
dc.rights All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner. en_US
dc.title A near-infrared faint galaxy survey : evolution and the cosmological geometry from K band photometry en_US
dc.type Thesis en_US
dc.type.dcmi Text en_US