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

Jesper Mirsa Skottfelt; D. M. Bramich; R. Figuera Jaimes; Uffe Gråe Jørgensen; N. Kanis; Kennet Bomann West Harpsøe; C. Liebig; M. T. Penny; K. A. Alsubai; J. M. Andersen; V. Bozza; P. Browne; S. Calchi Novati; Y. Damerdji; C. Diehl; M. Dominik; A. Elyiv; E. Giannini; F. Hessman; T. C. Hinse; M. Hundertmark; Diana Juncher; E. Kerins; Heidi Helena Korhonen; L. Mancini; R. Martin; M. Rabus; S. Rahvar; G. Scarpetta; J. Southworth; C. Snodgrass; R. A. Street; J. Surdej; J. Tregloan-Reed; C. Vilela; A. Williams

doi:10.1051/0004-6361/201321430

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

Jesper Mirsa Skottfelt, D. M. Bramich, R. Figuera Jaimes, Uffe Gråe Jørgensen, N. Kanis, Kennet Bomann West Harpsøe, C. Liebig, M. T. Penny, K. A. Alsubai, J. M. Andersen, V. Bozza, P. Browne, S. Calchi Novati, Y. Damerdji, C. Diehl, M. Dominik, A. Elyiv, E. Giannini, F. Hessman, T. C. HinseM. Hundertmark, Diana Juncher, E. Kerins, Heidi Helena Korhonen, L. Mancini, R. Martin, M. Rabus, S. Rahvar, G. Scarpetta, J. Southworth, C. Snodgrass, R. A. Street, J. Surdej, J. Tregloan-Reed, C. Vilela, A. Williams

Astrophysics and Planetary Science

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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.

Original language	English
Article number	A111
Journal	Astronomy & Astrophysics
Volume	558
Number of pages	4
ISSN	0004-6361
DOIs	https://doi.org/10.1051/0004-6361/201321430
Publication status	Published - May 2013

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Skottfelt, J. M., Bramich, D. M., Jaimes, R. F., Jørgensen, U. G., Kanis, N., Harpsøe, K. B. W., Liebig, C., Penny, M. T., Alsubai, K. A., Andersen, J. M., Bozza, V., Browne, P., Novati, S. C., Damerdji, Y., Diehl, C., Dominik, M., Elyiv, A., Giannini, E., Hessman, F., ... Williams, A. (2013). EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 (Research note). Astronomy & Astrophysics, 558, [A111]. https://doi.org/10.1051/0004-6361/201321430

Skottfelt, JM, Bramich, DM, Jaimes, RF, Jørgensen, UG, Kanis, N, Harpsøe, KBW, Liebig, C, Penny, MT, Alsubai, KA, Andersen, JM, Bozza, V, Browne, P, Novati, SC, Damerdji, Y, Diehl, C, Dominik, M, Elyiv, A, Giannini, E, Hessman, F, Hinse, TC, Hundertmark, M, Juncher, D, Kerins, E, Korhonen, HH, Mancini, L, Martin, R, Rabus, M, Rahvar, S, Scarpetta, G, Southworth, J, Snodgrass, C, Street, RA, Surdej, J, Tregloan-Reed, J, Vilela, C & Williams, A 2013, 'EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 (Research note)', Astronomy & Astrophysics, vol. 558, A111. https://doi.org/10.1051/0004-6361/201321430

@article{94dbe78656354a0cbc4c78e7f832b3ff,

title = "EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 (Research note)",

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.",

author = "Skottfelt, {Jesper Mirsa} and Bramich, {D. M.} and Jaimes, {R. Figuera} and J{\o}rgensen, {Uffe Gr{\aa}e} and N. Kanis and Harps{\o}e, {Kennet Bomann West} and C. Liebig and Penny, {M. T.} and Alsubai, {K. A.} and Andersen, {J. M.} and V. Bozza and P. Browne and Novati, {S. Calchi} and Y. Damerdji and C. Diehl and M. Dominik and A. Elyiv and E. Giannini and F. Hessman and Hinse, {T. C.} and M. Hundertmark and Diana Juncher and E. Kerins and Korhonen, {Heidi Helena} and L. Mancini and R. Martin and M. Rabus and S. Rahvar and G. Scarpetta and J. Southworth and C. Snodgrass and Street, {R. A.} and J. Surdej and J. Tregloan-Reed and C. Vilela and A. Williams",

note = "Erratum available at: https://doi.org/10.1051/0004-6361/201321430e",

year = "2013",

month = may,

doi = "10.1051/0004-6361/201321430",

language = "English",

volume = "558",

journal = "Astronomy and Astrophysics Supplement Series",

issn = "0004-6361",

publisher = "E D P Sciences",

}

TY - JOUR

T1 - EMCCD photometry reveals two new variable stars in the crowded central region of the globular cluster NGC 6981 (Research note)

AU - Skottfelt, Jesper Mirsa

AU - Bramich, D. M.

AU - Jaimes, R. Figuera

AU - Jørgensen, Uffe Gråe

AU - Kanis, N.

AU - Harpsøe, Kennet Bomann West

AU - Liebig, C.

AU - Penny, M. T.

AU - Alsubai, K. A.

AU - Andersen, J. M.

AU - Bozza, V.

AU - Browne, P.

AU - Novati, S. Calchi

AU - Damerdji, Y.

AU - Diehl, C.

AU - Dominik, M.

AU - Elyiv, A.

AU - Giannini, E.

AU - Hessman, F.

AU - Hinse, T. C.

AU - Hundertmark, M.

AU - Juncher, Diana

AU - Kerins, E.

AU - Korhonen, Heidi Helena

AU - Mancini, L.

AU - Martin, R.

AU - Rabus, M.

AU - Rahvar, S.

AU - Scarpetta, G.

AU - Southworth, J.

AU - Snodgrass, C.

AU - Street, R. A.

AU - Surdej, J.

AU - Tregloan-Reed, J.

AU - Vilela, C.

AU - Williams, A.

N1 - Erratum available at: https://doi.org/10.1051/0004-6361/201321430e

PY - 2013/5

Y1 - 2013/5

N2 - 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.

AB - 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.

U2 - 10.1051/0004-6361/201321430

DO - 10.1051/0004-6361/201321430

M3 - Journal article

SN - 0004-6361

VL - 558

JO - Astronomy and Astrophysics Supplement Series

JF - Astronomy and Astrophysics Supplement Series

M1 - A111

ER -

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

Abstract

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