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 20 of 20 for “"integral field spectroscopy"”.
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The chemical evolution of galaxies explored through multi-object integral field spectroscopy
… galaxies across cosmic time, making use of integral field spectroscopic data obtained through the KLEVER survey. In the first part of this thesis, I compare the galaxy-integrated properties of galaxies at z=2 to those found in local galaxies, with a particular focus of the abundance of …
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Star formation, quenching and chemical enrichment in local galaxies from integral field spectroscopy
… to resolved scales within galaxies by using integral field spectroscopy (IFS) data, mostly from the ongoing SDSS- IV MaNGA survey. In the first part of this thesis I demonstrate the ubiquitous presence of extended low ionisation emission-line regions (LIERs) in both late- and early-type …
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Shocks and Metallicity Gradients in Normal Star-Forming Galaxies
… galaxies. This is made possible by new integral field spectroscopy data that provide simultaneously spatial and spectral information of galaxies. First, I measure metallicity gradients in isolated disk galaxies and show that their metallicity gradients are remarkably simple and …
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Multi-dimensional analysis of the chemical and physical properties of spiral galaxies
The PPAK Integral Field Spectroscopy (IFS) Nearby Galaxies Survey: PINGS, a 2-dimensional spectroscopic mosaicking of 17 nearby disk galaxies in the optical wavelength range. This project represents the first attempt to obtain continuous coverage spectra of the whole surface of a galaxy in the …
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Detecting Extrasolar Planets using IFS-based Simultaneous Differential Imaging
Observations of extrasolar planets using Integral Field Spectroscopy (IFS), if coupled with an extreme Adaptive Optics system and analyzed with a Simultaneous Differential Imaging technique (SDI), are a powerful tool to detect and characterize planets directly; they enhance the signal of the planet …
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Crowded field spectroscopy and the search for intermediate-mass black holes in globular clusters
… are dense and massive star clusters that are an integral part of any major galaxy. Careful studies of their stars, a single cluster may contain several millions of them, have revealed that the ages of many globular clusters are comparable to the age of the Universe. These remarkable ages make …
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Spatially resolved star formation and quenching: insights from observations and simulations
… I use the Middle Ages Galaxy Properties with Integral Field Spectroscopy (MAGPI) survey to investigate how galaxies have fuelled, regulated and quenched their star formation activity at intermediate redshifts (z ~ 0.3). In the first science chapter, I map radial trends in star formation for …
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Spatially resolved star formation and quenching: insights from observations and simulations
… I use the Middle Ages Galaxy Properties with Integral Field Spectroscopy (MAGPI) survey to investigate how galaxies have fuelled, regulated and quenched their star formation activity at intermediate redshifts (z ~ 0.3). In the first science chapter, I map radial trends in star formation for …
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Metallicity correlations in galaxies
Integrated field spectroscopy provides a unique window to gas-phase oxygen abundances in the interstellar medium of galaxies in both the local and high-redshift Universe. The two-point correlation function is a useful tool for extracting information from the 2D metallicity maps that integral field …
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Metallicity correlations in galaxies
Integrated field spectroscopy provides a unique window to gas-phase oxygen abundances in the interstellar medium of galaxies in both the local and high-redshift Universe. The two-point correlation function is a useful tool for extracting information from the 2D metallicity maps that integral field …
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The star formation and dynamics of nearby galaxies
… masses. The analysis is performed using Hα integral field spectroscopy, R-band, narrowband Hα, and near-infrared photometry to determine the star formation rates and kinematics of the galaxies. In agreement with previous studies I find that the central stellar surface density is tightly …
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High-Contrast Observations with an Integral Field Spectrograph
… phase of Project 1640, a combined coronagraph--integral field spectrograph for Palomar Observatory's adaptive optics-equipped 200'' Hale Telescope. I have divided my investigations into three chapters. First, I describe the data reduction pipeline software, which solves a number of data …
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Unveiling the Primary Quenching Mechanisms in Galaxies through Large Spectroscopic Surveys
… from their central. Finally, we find, using integral field spectroscopy from the SDSS-IV MaNGA galaxy survey, that passive galaxies are substantially more metal-rich than star-forming galaxies at all radii, with the stellar metallicity difference decreasing with increasing radial distance. …
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3D-Spektrofotometrie extragalaktischer Emissionslinienobjekte
… Zerlegung ihres Lichtes Spektren gewonnen. Das Integral - Field - Verfahren ist eine relativ neue Technik, welche die genannten Beobachtungsmethoden vereint. Das Objektbild im Teleskopfokus wird in räumlich zerlegt und jedes Ortselement einem gemeinsamen Spektrografen zugeführt. Hierdurch wird …
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The Active Phases of a Galaxy in the JWST and Euclid Era: From Radio Jets and Multiphase Outflows to Mergers
… using Multi Unit Spectroscopic Explorer (MUSE) integral field spectroscopy, Very Large Array (VLA) and e-MERLIN radio observations with the goal of studying the interplay between radio jets, outflows, and the properties of the interstellar medium (ISM). We detected extended ionized gas outflows …
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Probing quasar sight lines in three dimensions
… DLAs reside. This thesis explores the use of integral field spectroscopy (IFS) to observe quasars known to have strong absorption lines in their spectra. IFS allows us to obtain a spectrum at many spatial points close to the quasar, thus providing images and spectroscopy simultaneously. From …
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The AGN-host galaxy connection : new insights from the extended ionised gas
… (z<0.3) QSOs using the novel technique of integral field spectroscopy that combines imaging and spectroscopy. After spatially separating the emission of AGN-ionised gas from HII regions, ionised solely by recently formed massive stars, we demonstrate that the specific star formation rates …
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Detecting and understanding extragalactic Lyman α emission using 3D spectroscopy
In this thesis we use integral-field spectroscopy to detect and understand of Lyman α (Lyα) emission from high-redshift galaxies. Intrinsically the Lyα emission at λ = 1216 Å is the strongest recombination line from galaxies. It arises from the 2p → 1s transition in hydrogen. In star-forming …
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Spatially-resolved studies of nearby star-forming galaxies
… and the surrounding gas within three BCDs, using integral field spectroscopic (IFS) data from the Gemini Multi-Object Spectrograph-North. While answering questions related to chemical homogeneity, ionisation mechanisms and stellar populations within BCDs, I address more profound issues, which go …
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Connecting simulations and observations in galaxy formation studies
… computational extragalactic astrophysics are two fields of research that study a similar subject from different perspectives. Observational extragalactic astrophysics aims, by recovering the spectral energy distribution of galaxies at different wavelengths, to reliably measure their properties at …