Extreme Emission Line Galaxies Observed with the James Webb Space Telescope's Medium-Band Filters

Simple item page
dc.contributor.advisorMuzzin, Adam
dc.contributor.advisorRavindranath, Swara
dc.contributor.authorWithers, Cassandra Carol
dc.date.accessioned2024-03-18T17:59:21Z
dc.date.available2024-03-18T17:59:21Z
dc.date.issued2024-03-16
dc.date.updated2024-03-16T10:49:09Z
dc.degree.disciplinePhysics And Astronomy
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractSince the beginning of the James Webb Space Telescope's science operations, there have been many observations dedicated to characterizing galaxies during the Epoch of Reionization (EoR). This thesis uses medium-band photometry from the JWST to search for Extreme Emission Line Galaxies (EELGs) in the EoR and analogues at lower redshifts. We present a sample of EELGs over 1.7 < z < 6.7 selected on their strong Halpha and [OIII] + Hbeta emission lines.  We measure the equivalent widths (EWs) and physical properties of the galaxies in our sample, finding high EWs (median EW(Halpha) = 893 Angstroms, EW([OIII] + Hbeta) = 1255 Angstroms) and properties typical of EELGs: mostly compact with low stellar mass, low metallicity, little dust, and high specific star formation rates. Follow-up NIRSpec spectroscopy of 15 of the EELGs in our sample confirm the nature and EWs of the EELGs measured from medium-band photometry, demonstrating the accuracy of our colour selections. 
dc.identifier.urihttps://hdl.handle.net/10315/41879
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectAstrophysics
dc.subject.keywordsGalaxies
dc.titleExtreme Emission Line Galaxies Observed with the James Webb Space Telescope's Medium-Band Filters
dc.typeElectronic Thesis or Dissertation

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Withers_Cassandra_C_2023_Masters.pdf
Size:
32.58 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 2 of 2
No Thumbnail Available
Name:
license.txt
Size:
1.87 KB
Format:
Plain Text
Description:
Download
No Thumbnail Available
Name:
YorkU_ETDlicense.txt
Size:
3.39 KB
Format:
Plain Text
Description:
Download

Collections

Physics and Astronomy

All items in the YorkSpace institutional repository are protected by copyright, with all rights reserved except where explicitly noted.