Essays about: "high redshift galaxies"

Showing result 1 - 5 of 13 essays containing the words high redshift galaxies.

1. 1. Probing the Structure of Ionised ISM in Lyman-Continuum-Leaking Green Pea Galaxies with MUSE

   University essay from Uppsala universitet/Institutionen för fysik och astronomi

   Author : Chinmaya Nagar; [2023]
   Keywords : Emission-line ratio; Gaussian convolution; Green pea galaxies; ISM; Ionised ISM; Lyman continuum LyC ; Low-Redshift Lyman Continuum Survey LzLCS ; Lyman continuum emitter LCE ; LyC escape; LyC escape fraction; MUSE; MPDAF; Voronoi binning;

   Abstract : Lyman continuum (LyC) photons are known to be responsible for reionising the universe after the end of the Dark Ages, which marked a period called the Epoch of Reionisation (EoR). While these high-energy photons are thought to predominantly originate from young, hot, massive stars within the earliest galaxies, and contributions from high-energy sources like quasars and AGN, the origins of these photons are yet not well known and highly debated. READ MORE

3. 2. Searching for direct collapse black holes using the James Webb Space Telescope

   University essay from Uppsala universitet/Institutionen för fysik och astronomi

   Author : Edison Arellano Almeida; [2022]
   Keywords : extragalactic astronomy;

   Abstract : Recent detections of massive quasars at z > 6 has proven to be an interesting challengefor cosmology given the short time frame that these objects have to reach a certainmass via conventional methods (e.g., galaxy mergers). READ MORE

4. 3. Colliding Galaxies in a (Nut)Shell

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Fysiska institutionen

   Author : Jonathan Petersson; [2022]
   Keywords : shell galaxies; simulations; starbursts; quenching; mergers; Physics and Astronomy;

   Abstract : Galaxy interactions and mergers are natural recurring events in the current cosmological paradigm, events that often coincide with starbursts and enhanced star formation activity. To understand why that is, one can use idealised (non-cosmological) merger simulations, which provide freedom to recreate specific tidally distorted galaxies, and analysis of the time evolution and underlying physics of the star formation activity at a high spatial resolution. READ MORE

5. 4. High Redshift Galaxies with JWST and Euclid

   University essay from Uppsala universitet/Institutionen för fysik och astronomi

   Author : Emma Lundqvist; [2022]
   Keywords : jwst; euclid; high redshift galaxies; early galaxies; GalaxyMC; jwst; euclid; tidiga galaxer; GalaxyMC;

   Abstract : This projects studies which early galaxy populations will be visible using the telescopes JWST and Euclid. Galaxy luminosity functions are calculated for different redshifts, with the galaxy number density as a function of apparent magnitude. The apparent magnitude is used to enable easy comparisons with the observational limits of JWST and Euclid. READ MORE

6. 5. Measuring the [C II]-to-H I connection in high-redshift absorption-selected galaxies

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : Gaurav Senthil Kumar; [2022]
   Keywords : QSO; Quasar; Black Hole; AGN; Active Galactic Nuclei; DLA; Damped Lyman Alpha; C II; [C II]; H I; Sightline; HST; X-shooter; Spectroscopy; Echelle Spectroscope; Hyperfine transition; Hyperfine; Physics and Astronomy;

   Abstract : HI neutral gas is the basic building block of galaxies. It dictates the star formation rate and hence the metal enrichment rates within high redshift galaxies. HI neutral gas cannot be directly observed beyond z ≈ 0. READ MORE