<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-09-19T12:54:46Z</responseDate><request verb="GetRecord" identifier="oai:dspace.mit.edu:1721.1/65527" metadataPrefix="dim">https://dspace.mit.edu/server/oai/request</request><GetRecord><record><header><identifier>oai:dspace.mit.edu:1721.1/65527</identifier><datestamp>2022-01-13T07:54:41Z</datestamp><setSpec>com_1721.1_7582</setSpec><setSpec>com_1721.1_7581</setSpec><setSpec>col_1721.1_131024</setSpec></header><metadata><dim:dim xmlns:dim="http://www.dspace.org/xmlns/dspace/dim" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.dspace.org/xmlns/dspace/dim http://www.dspace.org/schema/dim.xsd">
   <dim:field mdschema="dc" element="contributor" qualifier="advisor" lang="en_US">Robert Simcoe.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="author" lang="en_US">Bardalez Gagliuffi, Daniella C</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="other" lang="en_US">Massachusetts Institute of Technology. Dept. of Physics.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="department">Massachusetts Institute of Technology. Department of Physics</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="accessioned">2011-08-30T15:46:22Z</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="available">2011-08-30T15:46:22Z</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="copyright" lang="en_US">2010</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="issued" lang="en_US">2011</dim:field>
   <dim:field mdschema="dc" element="identifier" qualifier="uri">http://hdl.handle.net/1721.1/65527</dim:field>
   <dim:field mdschema="dc" element="identifier" qualifier="oclc" lang="en_US">746869377</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, June 2011.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">"June 2010." Cataloged from PDF version of thesis.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references (p. 45-46).</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="abstract" lang="en_US">We propose a new method to detect intergalactic Lyman a emitter and absorber systems by comparing broadband and narrowband images. The narrowband observations were carried out with the Maryland-Magellan Tunable Filter (MMTF) at central wavelengths of 5120A and 5140A and pointing to the Chandra Deep field South. The broadband images were obtained through the European Southern Observatory public database. Catalogues of galaxies were constructed from all images, taking the R broadband as a reference for locating objects. Via color-color and color-magniude diagrams, and taking the Steidel et al. color selection criteria as a reference, we were able to identify numerous Ly a emission and absorption candidates. This serves as a proof of concept that narrowband absorption could be used to mao the distribution of Lyman limit systems in 3D.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="statementofresponsibility" lang="en_US">by Daniella C. Bardalez Gagliuffi.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="degree" lang="en_US">S.B.</dim:field>
   <dim:field mdschema="dc" element="format" qualifier="extent" lang="en_US">46 p.</dim:field>
   <dim:field mdschema="dc" element="language" qualifier="iso" lang="en_US">eng</dim:field>
   <dim:field mdschema="dc" element="publisher" lang="en_US">Massachusetts Institute of Technology</dim:field>
   <dim:field mdschema="dc" element="rights" lang="en_US">M.I.T. theses are protected by 
copyright. They may be viewed from this source for any purpose, but 
reproduction or distribution in any format is prohibited without written 
permission. See provided URL for inquiries about permission.</dim:field>
   <dim:field mdschema="dc" element="rights" qualifier="uri" lang="en_US">http://dspace.mit.edu/handle/1721.1/7582</dim:field>
   <dim:field mdschema="dc" element="subject" lang="en_US">Physics.</dim:field>
   <dim:field mdschema="dc" element="title" lang="en_US">Testing a novel method to map the 3D distribution of gas clouds in intergalactic space</dim:field>
   <dim:field mdschema="dc" element="type" lang="en_US">Thesis</dim:field>
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	&lt;Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843&lt;/Type>
	&lt;Language>eng&lt;/Language>
   	&lt;Title>Testing a novel method to map the 3D distribution of gas clouds in intergalactic space&lt;/Title>
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   	&lt;PublicationDate>2011&lt;/PublicationDate>
   	&lt;Authors>
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        	&lt;DisplayName>Bardalez Gagliuffi, Daniella C&lt;/DisplayName>
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            &lt;DisplayName>Massachusetts Institute of Technology&lt;/DisplayName>
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    &lt;License>http://dspace.mit.edu/handle/1721.1/7582&lt;/License>
    &lt;Keyword>Physics.&lt;/Keyword>
   	&lt;Abstract>We propose a new method to detect intergalactic Lyman a emitter and absorber systems by comparing broadband and narrowband images. The narrowband observations were carried out with the Maryland-Magellan Tunable Filter (MMTF) at central wavelengths of 5120A and 5140A and pointing to the Chandra Deep field South. The broadband images were obtained through the European Southern Observatory public database. Catalogues of galaxies were constructed from all images, taking the R broadband as a reference for locating objects. Via color-color and color-magniude diagrams, and taking the Steidel et al. color selection criteria as a reference, we were able to identify numerous Ly a emission and absorption candidates. This serves as a proof of concept that narrowband absorption could be used to mao the distribution of Lyman limit systems in 3D.&lt;/Abstract>
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