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    EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981

    Access Status
    Fulltext not available
    Authors
    Skottfelt, J.
    Bramich, D.
    Figuera Jaimes, R.
    Jorgensen, U.
    Kains, N.
    Harpsoe, K.
    Liebig, C.
    Penny, M.
    Alsubai, K.
    Andersen, J.
    Bozza, V.
    Browne, P.
    Calchi Novati, S.
    Damerdji, Y.
    Diehl, C.
    Dominik, M.
    Elyiv, A.
    Giannini, E.
    Hessman, F.
    Hinse, T.
    Hundertmark, M.
    Juncher, D.
    Kerins, E.
    Korhonen, H.
    Mancini, L.
    Martin, R.
    Rabus, M.
    Rahvar, S.
    Scarpetta, G.
    Southworth, J.
    Snodgrass, C.
    Street, R.
    Surdej, J.
    Tregloan-Reed, J.
    Vilela, C.
    Williams, Andrew
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Skottfelt, J. and Bramich, D. and Figuera Jaimes, R. and Jorgensen, U. and Kains, N. and Harpsoe, K. and Liebig, C. et al. 2013. EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981. Astronomy and Astrophysics. 553: pp. 1-4.
    Source Title
    Astronomy and Astrophysics
    Additional URLs
    http://www.aanda.org/articles/aa/abs/2013/05/aa21430-13/aa21430-13.html
    ISSN
    0004-6361
    URI
    http://hdl.handle.net/20.500.11937/29681
    Collection
    • Curtin Research Publications
    Abstract

    Two previously unknown variable stars in the crowded central region of the globular cluster NGC 6981 are presented. The observations were made using the electron multiplying CCD (EMCCD) camera at the Danish 1.54 m Telescope at La Silla, Chile. The two variables were not previously detected by conventional CCD imaging because of their proximity to a bright star. This discovery demonstrates that EMCCDs are a powerful tool for performing high-precision time-series photometry in crowded fields and near bright stars, especially when combined with difference image analysis.

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