• Login
    View Item 
    •   Home
    • UA Faculty Research
    • UA Faculty Publications
    • View Item
    •   Home
    • UA Faculty Research
    • UA Faculty Publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of UA Campus RepositoryCommunitiesTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournalThis CollectionTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournal

    My Account

    LoginRegister

    About

    AboutUA Faculty PublicationsUA DissertationsUA Master's ThesesUA Honors ThesesUA PressUA YearbooksUA CatalogsUA Libraries

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    SMASHing the LMC: A Tidally Induced Warp in the Outer LMC and a Large-scale Reddening Map

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Choi_2018_ApJ_866_90.pdf
    Size:
    6.670Mb
    Format:
    PDF
    Description:
    Final Published version
    Download
    Author
    Choi, Yumi cc
    Nidever, David L. cc
    Olsen, Knut cc
    Blum, Robert D.
    Besla, Gurtina
    Zaritsky, Dennis
    van der Marel, Roeland P. cc
    Bell, Eric F.
    Gallart, Carme cc
    Cioni, Maria-Rosa L. cc
    Clifton Johnson, L.
    Katherina Vivas, A.
    Saha, Abhijit cc
    de Boer, Thomas J. L.
    Noël, Noelia E. D.
    Monachesi, Antonela cc
    Massana, Pol
    Conn, Blair C. cc
    Martinez-Delgado, David cc
    Muñoz, Ricardo R.
    Stringfellow, G. S. cc
    Show allShow less
    Affiliation
    Univ Arizona, Steward Observ
    Issue Date
    2018-10-20
    Keywords
    galaxies: dwarf
    galaxies: interactions
    galaxies: ISM
    galaxies: structure
    Magellanic Clouds
    
    Metadata
    Show full item record
    Publisher
    IOP PUBLISHING LTD
    Citation
    Yumi Choi et al 2018 ApJ 866 90
    Journal
    ASTROPHYSICAL JOURNAL
    Rights
    © 2018. The American Astronomical Society. All rights reserved.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    We present a study of the three-dimensional (3D) structure of the Large Magellanic Cloud (LMC) using similar to 2.2 million red clump (RC) stars selected from the Survey of the MAgellanic Stellar History. To correct for line-of-sight dust extinction, the intrinsic RC color and magnitude and their radial dependence are carefully measured by using internal nearly dust-free regions. These are then used to construct an accurate 2D reddening map (165 deg(2) area with similar to 10' resolution) of the LMC disk and the 3D spatial distribution of RC stars. An inclined disk model is fit to the 2D distance map, yielding a best-fit inclination angle i = 25.86(-1.39)(+0.73) degrees with random errors of +/- 0 degrees.19 and line-of-nodes position angle 149.23(-8.35)(+6.43) degrees with random errors of +/- 0 degrees.49. These angles vary with galactic radius, indicating that the LMC disk is warped and twisted likely due to the repeated tidal interactions with the Small Magellanic Cloud (SMC). For the first time, our data reveal a significant warp in the southwestern part of the outer disk starting at rho similar to 7 degrees that departs from the defined LMC plane up to similar to 4 kpc toward the SMC, suggesting that it originated from a strong interaction with the SMC. In addition, the inner disk encompassing the off-centered bar appears to be tilted up to 5 degrees-15 degrees relative to the rest of the LMC disk. These findings on the outer warp and the tilted bar are consistent with the predictions from the Besla et al. simulation of a recent direct collision with the SMC.
    ISSN
    1538-4357
    DOI
    10.3847/1538-4357/aae083
    Version
    Final published version
    Sponsors
    NSF [AST 1655677]; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [682115]; CONICYT FONDECYT [1181797]; Australian Research Council [DP150100862]; European Research Council [ERC StG-335936]; German Research Foundation (DFG) [Sonderforschungsbereich (SFB) 881]; National Science Foundation [2013A-0411, 2013B-0440]; U.S. Department of Energy; U.S. National Science Foundation; Ministry of Science and Education of Spain; Science and Technology Facilities Council of the United Kingdom; Higher Education Funding Council for England; National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign; Center for Cosmology and Astro-Particle Physics at the Ohio State University; Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University; Financiadora de Estudos e Projetos; Fundacao Carlos Chagas Filho de Amparo; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico; Deutsche Forschungsgemeinschaft; University of California at Santa Cruz; University of Cambridge; DES-Brazil Consortium; University of Edinburgh; Eidgenossische Technische Hochschule (ETH) Zurich; Ludwig-Maximilians Universitat Munchen; University of Nottingham; Ohio State University; University of Portsmouth; Texas AM University; Kavli Institute of Cosmological Physics at the University of Chicago; Ministerio da Ciencia, Tecnologia e Inovacao; Argonne National Laboratory; Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas-Madrid; University of Chicago; University College London; Fermi National Accelerator Laboratory; University of Illinois at Urbana-Champaign; Institut de Ciencies de l'Espai (IEEC/CSIC); Institut de Fisica d'Altes Energies; Lawrence Berkeley National Laboratory; Excellence Cluster Universe; University of Michigan; National Optical Astronomy Observatory; University of Pennsylvania; SLAC National Accelerator Laboratory; Stanford University; University of Sussex
    Additional Links
    http://stacks.iop.org/0004-637X/866/i=2/a=90?key=crossref.c4a0d3925be4f5b97ae42ebbc440cf09
    ae974a485f413a2113503eed53cd6c53
    10.3847/1538-4357/aae083
    Scopus Count
    Collections
    UA Faculty Publications

    entitlement

     
    The University of Arizona Libraries | 1510 E. University Blvd. | Tucson, AZ 85721-0055
    Tel 520-621-6442 | repository@u.library.arizona.edu
    DSpace software copyright © 2002-2017  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.