Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"SED-fitting"”.
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Spectral Energy Distribution Modelling of X-ray Selected AGNs and Their Host Galaxies
… work throughout this thesis has therefore focused on the development and implementation of a new SED fitting code, using an up-to-date AGN SED to accurately infer both AGN and host galaxy properties. To this end, we explore the intricacies involved in producing useful property inferences using …
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Star-forming Galaxies and Quenched Systems throughout Cosmic Time
… of star-forming galaxies. I use the BEAGLE SED-fitting code to derive stellar masses, SFRs and redshifts from galaxies within the ASTRODEEP catalogue. I fit a fully Bayesian hierarchical model of the main sequence over redshifts 1.25 < z < 6 while explicitly modelling the outlier …
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The Host Galaxies of Luminous Reddened Quasars at z~2
… quasar and galaxy emission can be separated via SED-fitting in these systems. By isolating the galaxy emission in this way, we estimate instantaneous SFRs for the galaxies in our sample, based on the restframe UV emission. In general, we find obscured quasars to reside in prodigiously star …
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Introducing the Texas Euclid Survey for Lyman Alpha (TESLA) survey : initial study correlating galaxy properties to Lyman-alpha emission
… We perform spectral energy distribution (SED) fitting to compute the galaxy properties of 43 LAEs, and study correlations between stellar mass, star formation rate (SFR), and dust, to the Lyα rest-frame equivalent width (W [subscript Lyα]). We uncover marginal (1σ significance) …
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An Analysis of the Stellar Mass Properties of Distant Galaxy Clusters From the Massive and Distant Clusters of WISE Survey (MaDCoWS)
… for a sample of MaD- CoWS clusters. Using SED-fitting of deep optical and mid-infrared photometry, I establish the membership of objects along the lines-of-sight to these clusters and calculate the stellar masses of member galaxies. The results follow a similar pattern of stellar mass …
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Probing Galaxy Evolution with AKARI
… on both the Spectral Energy Distribution (SED) templates and evolution of the galaxy types. The phenomenological backwards evolution model of Pearson 2005 appeared to be consistent with the number counts. To probe this, number counts were extracted from below the survey limit by performing …
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Investigating strong gravitational lensing with infrared space missions : AKARA, Spitzer and Herschel
… Survey, are investigated with light profile and SED fitting, to derive physical characteristics. For two of the five lenses, it was possible to disentangle the lens and background galaxy components in highly photometrically blended <i>Spitzer</i> data, after observations by the Submillimeter …
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The automated detection and multiwavelength properties of LADUMA HI galaxies
… finding mask created in this work will be used to clean the first public data release of the LADUMA data cubes, which will be outlined in an upcoming paper. We present the confirmed SoFiA-2 detections of HI and compare the results to those produced by manual and semi-automated methods of …
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Insights into the nature of dust attenuation in relation to galaxy evolution from local to cosmic noon galaxies
… universal nebular attenuation law that can be used to dust correct emission lines. Using the attenuation law of the stellar continuum derived through SED fitting, we find that the reddening of the nebular attenuation law and the reddening of the stellar continuum are overall consistent with each …
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Studying the environmental dependence of star formation properties of galaxies in the Abell 1437 galaxy cluster and its surrounding large scale structure
… structure surrounding the cluster is characterised through the use of a Friends-of-Friends algorithm based on spectroscopic data. This provides a reference from which we construct a photometric environmental catalogue using methods developed to find groups and define filamentary structure. To …
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The Evolution of and Starburst-AGN Connection in Luminous and Ultraluminous Infrared Galaxies and their Link to Globular Cluster Formation
… the BPT diagram involving [N II]/Hα that are based on how these properties vary between two U/LIRGs positioned at the end-points. The paths involve U/LIRGs that decrease in SFR and increase in AGN activity. Paths with U/LIRGs that evolve into high luminosity AGN likely do so due to recent, …
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A high energy perspective of the co-evolution of black holes and their host galaxies
… luminosity and spectral energy distributions (SEDs) of elusive AGN is of paramount importance. The recent COSMOS survey provides the necessary multiwavelength database to characterize the SEDs of a statistically robust sample of obscured sources. The combination of high X/O and red-colors …