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Skottfelt, Jesper; Bramich, D. M.; Figuera Jaimes, R.; Jørgensen, U. G.; Kains, N.; W Harpsøe, K. B.; Liebig, C.; Penny, M. T.; Alsubai, K. A.; Andersen, J. M.; Bozza, V.; Browne, P.; Calchi Novati, S.; Damerdji, Y.; Diehl, C.; Dominik, M.; Elyiv, A.; Giannini, E.; Hessman, F.; Hinse, T. C.; Hundertmark, M.; Juncher, D.; Kerins, E.; Korhonen, H.; Mancini, L.; Martin, R.; Rabus, M.; Rahvar, S.; Scarpetta, G.; Southworth, J.; Snodgrass, Colin; Street, R. A.; Surdej, J.; Tregloan-Reed, J.; Vilela, C. and Williams, A.
(2013).
DOI: https://doi.org/10.1051/0004-6361/201321430
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 variableswere 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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About
- Item ORO ID
- 43049
- Item Type
- Journal Item
- ISSN
- 1432-0746
- Project Funding Details
-
Funded Project Name Project ID Funding Body Not Set Grant NPRP 09-476-1-078 Qatar National Research Fund (QNRF), member of Qatar Foundation Seventh Framework Programme (FP7/2007−2013/) Grant agreement Nos. 229517, 268421 and 274889 EU Center of Excellence Centre for Star and Planet Formation (StarPlan) Not Set The Danish National Research Foundation - Keywords
- globular clusters: individual: NGC 6981; stars: variables: RR Lyrae; instrumentation: high angular resolution; stars: variables: general
- Academic Unit or School
-
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Research Group
-
Centre for Electronic Imaging (CEI)
?? space ?? - Copyright Holders
- © 2013 ESO
- Depositing User
- Colin Snodgrass