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020 ▼a 9781085691260
035 ▼a (MiAaPQ)AAI22585347
040 ▼a MiAaPQ ▼c MiAaPQ ▼d 247004
0820 ▼a 523
1001 ▼a Pharo, John.
24510 ▼a Galaxy Overdensities and Emission Line Galaxies in the Faint Infrared Grism Survey.
260 ▼a [S.l.]: ▼b Arizona State University., ▼c 2019.
260 1 ▼a Ann Arbor: ▼b ProQuest Dissertations & Theses, ▼c 2019.
300 ▼a 164 p.
500 ▼a Source: Dissertations Abstracts International, Volume: 81-03, Section: B.
500 ▼a Advisor: Malhotra, Sangeeta
5021 ▼a Thesis (Ph.D.)--Arizona State University, 2019.
506 ▼a This item must not be sold to any third party vendors.
520 ▼a Learning how properties of galaxies such as star formation, galaxy interactions, chemical composition, and others evolve to produce the modern universe has long been a goal of extragalactic astronomy. In recent years, grism spectroscopy from the Hubble Space Telescope (HST) has provided a means to study these properties with spectroscopy while avoiding the limitations of ground-based observation. In this dissertation, I present several studies wherein I used HST G102 grism spectroscopy from the Faint Infrared Grism Survey (FIGS) to investigate these fundamental properties of galaxies and how they interact and evolve. In the first study, I combined the grism spectra with broadband photometry to produce a catalog of redshifts with improved accuracy, reducing the median redshift error from 3% to 2%. With this redshift catalog, I conducted a systematic search for galaxy overdensities in the FIGS fields, producing a list of 24 significant candidates. In the second study, I developed a method for identifying emission line galaxy (ELG) candidates from continuum-subtracted 1D spectra, and identified 71 ELGs in one FIGS field. In matching MUSE/VLT spectra, I measured the [OIII]貫4363 emission line for 14 FIGS ELGs, and used this to measure their Te-based gas-phase metallicities. These ELGs show a low-metallicity offset on the Mass-Metallicity Relation, and I demonstrated that this offset can be explained by recent star formation. In the third study, I expanded the ELG search to all four FIGS fields, identifying 208 H慣, [OIII]貫貫4959,5007, and [OII]貫貫3727,3729 line emitters. I compiled a catalog of line fluxes, redshifts, and equivalent widths. I combined this catalog with the overdensity study to investigate a possible relationship between line luminosity, star formation, and an ELG's environment. In the fourth study, I used 15 FIGS H慣 emitters and 49 "green pea" line emitters to compare H慣 and the far-UV continuum as tracers of star formation. I explored a correlation between the H慣-FUV ratio and the ratio of [OIII]貫貫4959,5007 to [OII]貫貫3727,3729 and its implications for star formation history.
590 ▼a School code: 0010.
650 4 ▼a Astrophysics.
690 ▼a 0596
71020 ▼a Arizona State University. ▼b Astrophysics.
7730 ▼t Dissertations Abstracts International ▼g 81-03B.
773 ▼t Dissertation Abstract International
790 ▼a 0010
791 ▼a Ph.D.
792 ▼a 2019
793 ▼a English
85640 ▼u http://www.riss.kr/pdu/ddodLink.do?id=T15492933 ▼n KERIS ▼z 이 자료의 원문은 한국교육학술정보원에서 제공합니다.
980 ▼a 202002 ▼f 2020
990 ▼a ***1008102
991 ▼a E-BOOK