Stellar masses of star forming galaxies in clusters

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dc.contributor.advisorCrawford, Steven
dc.contributor.advisorCress, Catherine
dc.contributor.authorRandriamampandry, Solohery Mampionona
dc.contributor.otherDept. of Physics
dc.date.accessioned2014-03-25T08:34:59Z
dc.date.accessioned2024-10-30T10:23:07Z
dc.date.available2013/05/02
dc.date.available2013/05/02 09:58
dc.date.available2014-03-25T08:34:59Z
dc.date.available2024-10-30T10:23:07Z
dc.date.issued2010
dc.descriptionMagister Scientiae - MScen_US
dc.description.abstractWe determine the stellar mass of star forming galaxies in the X-ray luminous cluster MS 0451.6-0305 at z ∼ 0.54. The stellar masses are estimated from fitting model spectral energy distributions (SEDs) to deep, optical UBRIz observations obtained from WIYN 3.5m telescope and public NIR K-band image from Palomar Observatory telescope. The model SEDs are based on the stellar population synthesis (SPS) model of Bruzual & Charlot (2003) and Conroy et al. (2009) that span a wide range of age, star formation history, Initial Mass Function (IMF), metallicity and dust content. We measure stellar masses for galaxies down to M∗∼2×10⁸M(.) We find a tight correlation between stellar masses derived from the two SPSs. We compare the derived stellar masses to the dynamical masses for a set of 25 star forming galaxies. The dynamical masses are derived from high resolution, spectroscopic observations of emission lines from the DEIMOS spectrograph on the Keck telescope. A strong correlation is seen between the dynamical and stellar mass for the galaxies; and the star forming galaxies show fairly constant ratio between stellar and dynamical mass. When comparing to the field sample of Guzm ́an et al. (2003) of luminous compact blue galaxies, we see an excess of low mass galaxies in the cluster.en_US
dc.description.countrySouth Africa
dc.identifier.urihttps://hdl.handle.net/10566/16579
dc.language.isoenen_US
dc.publisherUniversity of the Western Capeen_US
dc.rights.holderCopyright: University of the Western Capeen_US
dc.subjectGalaxiesen_US
dc.subjectGalaxy clustersen_US
dc.subjectStar forming galaxiesen_US
dc.subjectLCBGsen_US
dc.subjectSEDs modelen_US
dc.subjectPhotometryen_US
dc.subjectSpectroscopyen_US
dc.subjectStellar massen_US
dc.subjectDynamical massen_US
dc.subjectDark matteren_US
dc.titleStellar masses of star forming galaxies in clustersen_US

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