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Browsing by Author "Calzadilla, Michael S."

Browsing by Author "Calzadilla, Michael S."

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  • Revealing a Highly Dynamic Cluster Core in Abell 1664 with Chandra 
    Calzadilla, Michael S.; Russell, Helen R.; McDonald, Michael A.; Fabian, Andrew C.; Baum, Stefi A.; Combes, Françoise; Donahue, Megan; Edge, Alastair C.; McNamara, Brian R.; Nulsen, Paul E. J.; O'Dea, Christopher P.; Oonk, J. B. Raymond; Tremblay, Grant R.; Vantyghem, Adrian N. (2019)
    We present new, deep (245 ks) Chandra observations of the galaxy cluster Abell 1664 (z = 0.1283). These images reveal rich structure, including elongation and accompanying compressions of the X-ray isophotes in the NE-SW ...
  • SPT-CL J2215-3537: A Massive Starburst at the Center of the Most Distant Relaxed Galaxy Cluster 
    Calzadilla, Michael S.; Bleem, Lindsey E.; McDonald, Michael; Gladders, Michael D.; Mantz, Adam B.; Allen, Steven W.; Bayliss, Matthew B.; Eilers, Anna-Christina; Floyd, Benjamin; Hlavacek-Larrondo, Julie; Khullar, Gourav; Kim, Keunho J.; Mahler, Guillaume; Sharon, Keren; Somboonpanyakul, Taweewat; Stalder, Brian; Stark, Antony A.; SPT Collaboration (2023)
    We present the discovery of the most distant, dynamically relaxed cool core cluster, SPT-CL J2215-3537 (SPT2215), and its central brightest cluster galaxy (BCG) at z = 1.16. Using new X-ray observations, we demonstrate ...
  • Strong Lensing Model of SPT-CL J0356-5337, a Major Merger Candidate at Redshift 1.0359 
    Mahler, Guillaume; Sharon, Keren; Gladders, Michael D.; Bleem, Lindsey; Bayliss, Matthew B.; Calzadilla, Michael S.; Floyd, Benjamin; Khullar, Gourav; McDonald, Michael; Remolina González, Juan D.; Schrabback, Tim; Stark, Antony A.; van den Busch, Jan Luca (2020)
    We present an analysis of the mass distribution inferred from strong lensing by SPT-CL J0356-5337, a cluster of galaxies at redshift $z=1.0359$ revealed in the follow-up of the SPT-SZ clusters. The cluster has an Einstein ...
  • Synthesizing Stellar Populations in South Pole Telescope Galaxy Clusters. I. Ages of Quiescent Member Galaxies at 0.3 < z < 1.4 
    Khullar, Gourav; Bayliss, Matthew B.; Gladders, Michael D.; Kim, Keunho J.; Calzadilla, Michael S.; Strazzullo, Veronica; Bleem, Lindsey E.; Mahler, Guillaume; McDonald, Michael; Floyd, Benjamin; Reichardt, Christian L.; Ruppin, Florian; Saro, Alexandro; Sharon, Keren; Somboonpanyakul, Taweewat; Stalder, Brian; Stark, Antony A. (2022)
    Using stellar population synthesis models to infer star formation histories (SFHs), we analyze photometry and spectroscopy of a large sample of quiescent galaxies that are members of Sunyaev-Zel'dovich (SZ)-selected ...
  • Testing the Limits of AGN Feedback and the Onset of Thermal Instability in the Most Rapidly Star-forming Brightest Cluster Galaxies 
    Calzadilla, Michael S.; McDonald, Michael; Donahue, Megan; McNamara, Brian R.; Fogarty, Kevin; Gaspari, Massimo; Gitti, Myriam; Russell, Helen R.; Tremblay, Grant R.; Voit, G. Mark; Ubertosi, Francesco (2022)
    We present new, deep, narrow- and broadband Hubble Space Telescope observations of seven of the most star-forming brightest cluster galaxies (BCGs). Continuum-subtracted [OII] maps reveal the detailed, complex structure ...

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