EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981
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 conven...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
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EDP Sciences
2013
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| Subjects: | |
| Online Access: | http://www.aanda.org/articles/aa/abs/2013/05/aa21430-13/aa21430-13.html http://hdl.handle.net/20.500.11937/29681 |
| _version_ | 1848752870259687424 |
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| author | 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 |
| author_facet | 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 |
| author_sort | Skottfelt, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T08:15:29Z |
| format | Journal Article |
| id | curtin-20.500.11937-29681 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:15:29Z |
| publishDate | 2013 |
| publisher | EDP Sciences |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-296812017-02-28T01:50:24Z EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 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 globular clusters individual high angular resolution – - stars NGC 6981 – stars RR Lyrae – instrumentation general variables 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. 2013 Journal Article http://hdl.handle.net/20.500.11937/29681 http://www.aanda.org/articles/aa/abs/2013/05/aa21430-13/aa21430-13.html EDP Sciences restricted |
| spellingShingle | globular clusters individual high angular resolution – - stars NGC 6981 – stars RR Lyrae – instrumentation general variables 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 EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 |
| title | EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 |
| title_full | EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 |
| title_fullStr | EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 |
| title_full_unstemmed | EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 |
| title_short | EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 |
| title_sort | emccd photometry reveals two new variable stars in the crowded central region of the globular cluster ngc 6981 |
| topic | globular clusters individual high angular resolution – - stars NGC 6981 – stars RR Lyrae – instrumentation general variables |
| url | http://www.aanda.org/articles/aa/abs/2013/05/aa21430-13/aa21430-13.html http://hdl.handle.net/20.500.11937/29681 |