This manual covers the detection and characterization of Lyman-alpha emitting galaxies at high redshift, specifically focusing on young galaxies in a young universe. Utilizing advanced observational techniques such as serendipitous slit spectroscopy and narrowband imaging, this work pushes the limits to probe galaxy populations at redshifts up to z = 6.5. This corresponds to a universe only 800 million years old, a critical period in cosmic history. The findings presented offer insights into the evolution of early galaxies and contribute to the growing field of observational cosmology, enabling the assembly of high-redshift datasets to address specific astrophysical questions.
The purpose of this manual is to detail the methodologies and results of detecting and characterizing these early galaxies. It outlines the observational techniques employed, the challenges faced in pushing these methods to their limits, and the scientific implications of the findings. This document serves as a comprehensive resource for astronomers and astrophysicists interested in the early universe, galaxy formation, and the study of high-redshift phenomena. It provides a detailed account of how observational cosmology has advanced to routinely gather data for specific astrophysical investigations.
As late as 1995, the anticipated widespread population of primeval galaxies remained at large, lurking undetected at unknown redshifts, with undiscovered properties. We present results from our efforts to detect and characterize primeval galaxies by their signature high-redshift Lyman-alpha emission lines utilizing two observational techniques: serendipitous slit spectroscopy and narrowband imaging. By pushing these techniques to their utmost limits, we probe the Lyman-alpha-emitting galaxy population out to redshifts as high as z = 6.5. Galaxies at this epoch reside in a universe which is just 800 million years old, a mere 6% of its current age. As such, this work provides one account of the manner by which observational cosmology has recently shifted from merely marveling at the incredible lookback times implied by the first few high-redshift detections, to the routine assembly of high-redshift datasets designed to address specific astrophysical issues.
Author: Dawson, Steven Arthur
Publisher: Dissertation.Com
Illustration: N
Language: ENG
Title: Lyman Alpha Emitting Galaxies at High Redshift: Direct Detection of Young Galaxies in a Young Universe
Pages: 00000 (Encrypted PDF)
On Sale: 2012-09-06
SKU-13/ISBN: 9781581122947
Category: Science : Astronomy - General
Category: Science : Physics - Astrophysics
As late as 1995, the anticipated widespread population of primeval galaxies remained at large, lurking undetected at unknown redshifts, with undiscovered properties. We present results from our efforts to detect and characterize primeval galaxies by their signature high-redshift Lyman-alpha emission lines utilizing two observational techniques: serendipitous slit spectroscopy and narrowband imaging. By pushing these techniques to their utmost limits, we probe the Lyman-alpha-emitting galaxy population out to redshifts as high as z = 6.5. Galaxies at this epoch reside in a universe which is just 800 million years old, a mere 6% of its current age. As such, this work provides one account of the manner by which observational cosmology has recently shifted from merely marveling at the incredible lookback times implied by the first few high-redshift detections, to the routine assembly of high-redshift datasets designed to address specific astrophysical issues.
Author: Dawson, Steven Arthur
Publisher: Dissertation.Com
Illustration: N
Language: ENG
Title: Lyman Alpha Emitting Galaxies at High Redshift: Direct Detection of Young Galaxies in a Young Universe
Pages: 00000 (Encrypted PDF)
On Sale: 2012-09-06
SKU-13/ISBN: 9781581122947
Category: Science : Astronomy - General
Category: Science : Physics - Astrophysics
