{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/85173"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/85173","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"The Mt. Laguna Infrared Cluster Survey: A Search for Galaxy Clusters Beyond Z = 1","abstract":"The Mt. Laguna Infrared Cluster Survey (MLICS) is a survey for distant galaxy clusters conducted in the JHK' bands on the 1-m telescope at Mt. Laguna Observatory. By smoothing images after subtraction of foreground objects, clusters were detected by the fluctuations they cause in the near-infrared background light. False detections were eliminated by the J - K' color of candidate brightest cluster galaxies. The survey catalog consists of 151 cluster candidates at 0.5 ≤ zest ≤ 1.5 over 0.7 deg2. These include the first cluster candidates found in a serendipitous survey at z > 1.3. The catalog provides a sample of high-redshift cluster candidates suitable for further study, many located near guide stars for adaptive optics systems. The effectiveness of the cluster detection method was proven through the detection of test clusters and through Monte Carlo simulations. These simulations show that the survey can find clusters of M ∼ 1015 h-1 M⊙ to z ∼ 1.4 and even clusters with M ∼ 2 x 1014h-1 M⊙ as distant as z ∼ 0.8. The false positive rate of the catalog is estimated to be 50% at z < 1 based on I-band follow-up observations. The MLICS cluster density may be greater than that predicted by N-body simulations at previously untested distances of z > 1 and show that the evolution of the cluster number density is slower than previously thought.","abstract_html":"The Mt. Laguna Infrared Cluster Survey (MLICS) is a survey for distant galaxy clusters conducted in the JHK' bands on the 1-m telescope at Mt. Laguna Observatory. By smoothing images after subtraction of foreground objects, clusters were detected by the fluctuations they cause in the near-infrared background light. False detections were eliminated by the J - K' color of candidate brightest cluster galaxies. The survey catalog consists of 151 cluster candidates at 0.5 &le; zest &le; 1.5 over 0.7 deg2. These include the first cluster candidates found in a serendipitous survey at z > 1.3. The catalog provides a sample of high-redshift cluster candidates suitable for further study, many located near guide stars for adaptive optics systems. The effectiveness of the cluster detection method was proven through the detection of test clusters and through Monte Carlo simulations. These simulations show that the survey can find clusters of M &sim; 1015 h-1 M&odot; to z &sim; 1.4 and even clusters with M &sim; 2 x 1014h-1 M&odot; as distant as z &sim; 0.8. The false positive rate of the catalog is estimated to be 50% at z < 1 based on I-band follow-up observations. The MLICS cluster density may be greater than that predicted by N-body simulations at previously untested distances of z > 1 and show that the evolution of the cluster number density is slower than previously thought.","abstract_has_math":false,"creators":["Griffin, Michelle Marie"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Astronomy","degree_department":null,"school":null,"contributors":["Laird A. Thompson"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-25T22:35:36Z","date_published":"2015-09-25T22:35:36Z","updated_at":"2026-07-22T22:26:24Z","subjects":["Physics, Astronomy and Astrophysics"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI3111549"],"render_values":[{"text":"(MiAaPQ)AAI3111549","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/85173","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Laird A. Thompson"]},{"key":"dc:creator","label":"Author","values":["Griffin, Michelle Marie"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-25T22:35:36Z","10000-01-01","2003"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Astronomy"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Physics, Astronomy and Astrophysics"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/85173","(MiAaPQ)AAI3111549"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The Mt. Laguna Infrared Cluster Survey (MLICS) is a survey for distant galaxy clusters conducted in the JHK' bands on the 1-m telescope at Mt. Laguna Observatory. By smoothing images after subtraction of foreground objects, clusters were detected by the fluctuations they cause in the near-infrared background light. False detections were eliminated by the J - K' color of candidate brightest cluster galaxies. The survey catalog consists of 151 cluster candidates at 0.5 ≤ zest ≤ 1.5 over 0.7 deg2. These include the first cluster candidates found in a serendipitous survey at z > 1.3. The catalog provides a sample of high-redshift cluster candidates suitable for further study, many located near guide stars for adaptive optics systems. The effectiveness of the cluster detection method was proven through the detection of test clusters and through Monte Carlo simulations. These simulations show that the survey can find clusters of M ∼ 1015 h-1 M⊙ to z ∼ 1.4 and even clusters with M ∼ 2 x 1014h-1 M⊙ as distant as z ∼ 0.8. The false positive rate of the catalog is estimated to be 50% at z < 1 based on I-band follow-up observations. The MLICS cluster density may be greater than that predicted by N-body simulations at previously untested distances of z > 1 and show that the evolution of the cluster number density is slower than previously thought.","Made available in DSpace on 2015-09-25T22:35:36Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3111549.pdf: 8181326 bytes, checksum: edae7f64be4bef564a2d8b54913b99b5 (MD5) Previous issue date: 2003","Embargo set by: Seth Robbins for item 86454 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","149 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2003."]},{"key":"dc:title","label":"Title","values":["The Mt. Laguna Infrared Cluster Survey: A Search for Galaxy Clusters Beyond Z = 1"]}]}],"canonical_facts":{"dc:contributor":["Laird A. Thompson"],"dc:creator":["Griffin, Michelle Marie"],"dc:date":["2015-09-25T22:35:36Z","10000-01-01","2003"],"dc:description":["The Mt. Laguna Infrared Cluster Survey (MLICS) is a survey for distant galaxy clusters conducted in the JHK' bands on the 1-m telescope at Mt. Laguna Observatory. By smoothing images after subtraction of foreground objects, clusters were detected by the fluctuations they cause in the near-infrared background light. False detections were eliminated by the J - K' color of candidate brightest cluster galaxies. The survey catalog consists of 151 cluster candidates at 0.5 ≤ zest ≤ 1.5 over 0.7 deg2. These include the first cluster candidates found in a serendipitous survey at z > 1.3. The catalog provides a sample of high-redshift cluster candidates suitable for further study, many located near guide stars for adaptive optics systems. The effectiveness of the cluster detection method was proven through the detection of test clusters and through Monte Carlo simulations. These simulations show that the survey can find clusters of M ∼ 1015 h-1 M⊙ to z ∼ 1.4 and even clusters with M ∼ 2 x 1014h-1 M⊙ as distant as z ∼ 0.8. The false positive rate of the catalog is estimated to be 50% at z < 1 based on I-band follow-up observations. The MLICS cluster density may be greater than that predicted by N-body simulations at previously untested distances of z > 1 and show that the evolution of the cluster number density is slower than previously thought.","Made available in DSpace on 2015-09-25T22:35:36Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3111549.pdf: 8181326 bytes, checksum: edae7f64be4bef564a2d8b54913b99b5 (MD5) Previous issue date: 2003","Embargo set by: Seth Robbins for item 86454 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","149 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2003."],"dc:identifier":["http://hdl.handle.net/2142/85173","(MiAaPQ)AAI3111549"],"dc:language":["eng"],"dc:subject":["Physics, Astronomy and Astrophysics"],"dc:title":["The Mt. Laguna Infrared Cluster Survey: A Search for Galaxy Clusters Beyond Z = 1"],"dc:type":["text"],"thesis:degree_discipline":["Astronomy"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:24Z"}