Ionized and neutral gas in the XUV discs of nearby spiral galaxies

[No Value] López-Sánchez, B.S. Koribalski, Tobias Westmeier, C. Esteban

    Research output: Chapter in Book/Conference paperConference paperpeer-review


    © International Astronomical Union 2015. We are conducting a multiwavelength study of XUV discs in nearby, gas-rich spiral galaxies combining the available UV (GALEX) observations with H I data obtained at the ATCA as part of the Local Volume HI Survey (LVHIS) project and multi-object fibre spectroscopy obtained using the 2dF/AAOmega instrument at the 3.9m AAT. Here we present the results of the multiwavelength analysis of the galaxy pair NGC 1512/1510. The H I distribution of NGC 1512 is very extended with two pronounced spiral/tidal arms. Hundreds of independent UV-bright regions are associated with dense H I clouds in the galaxy outskirts. We confirm the detection of ionized gas in the majority of them and characterize their physical properties, chemical abundances and kinematics. Both the gas distribution andthe distribution of the star-forming regions are affected by gravitational interactionwith the neighbouring blue compact dwarf galaxy NGC 1510. Our multiwavelength analysis provides new clues about local star-formation processes, the metal redistribution in the outer gaseous discs of spiral galaxies, the importance of galaxy interactions, the fate of the neutral gas and the chemical evolution in nearby galaxies.
    Original languageEnglish
    Title of host publicationProceedings of the International Astronomical Union: Symposium S309 (Galaxies in 3D across the Universe)
    EditorsPiero Benvenuti
    Place of PublicationUnited Kingdom
    PublisherCambridge University Press
    ISBN (Electronic)17439221
    ISBN (Print)17439213
    Publication statusPublished - 2014
    EventInternational Astronomical Union Symposium 309: Galaxies in 3D across the Universe - Vienna, Austria
    Duration: 7 Jul 201411 Jul 2014


    ConferenceInternational Astronomical Union Symposium 309
    Abbreviated titleIAUS 309
    Internet address


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