Navigation überspringen
Universitätsbibliothek Heidelberg
Status: Bibliographieeintrag

Verfügbarkeit
Standort: ---
Exemplare: ---
heiBIB
 Online-Ressource
Verfasst von:Skottfelt, Jesper [VerfasserIn]   i
 Ciceri, Simona [VerfasserIn]   i
 Schmidt, Robert W. [VerfasserIn]   i
Titel:Searching for variable stars in the cores of five metal-rich globular clusters using EMCCD observations
Verf.angabe:J. Skottfelt, D.M. Bramich, R. Figuera Jaimes, U.G. Jørgensen, N. Kains, A. Arellano Ferro, K.A. Alsubai, V. Bozza, S. Calchi Novati, S. Ciceri, G. D’Ago, M. Dominik, P. Galianni, S.-H. Gu, K.B.W. Harpsøe, T. Haugbølle, T.C. Hinse, M. Hundertmark, D. Juncher, H. Korhonen, C. Liebig, L. Mancini, A. Popovas, M. Rabus, S. Rahvar, G. Scarpetta, R.W. Schmidt, C. Snodgrass, J. Southworth, D. Starkey, R.A. Street, J. Surdej, X.-B. Wang, and O. Wertz (The MiNDSTEp Consortium)
E-Jahr:2015
Jahr:6 January 2015
Fussnoten:Gesehen am 18.06.2020
Titel Quelle:Enthalten in: Astronomy and astrophysics
Ort Quelle:Les Ulis : EDP Sciences, 1969
Jahr Quelle:2015
Band/Heft Quelle:573(2015) Artikel-Nummer A103, 23 Seiten
ISSN Quelle:1432-0746
Abstract:Aims. In this paper, we present the analysis of time-series observations from 2013 and 2014 of five metal-rich ([Fe/H] > −1) globular clusters: NGC 6388, NGC 6441, NGC 6528, NGC 6638, and NGC 6652. The data have been used to perform a census of the variable stars in the central parts of these clusters. Methods. The observations were made with the electron-multiplying charge-couple device (EMCCD) camera at the Danish 1.54 m Telescope at La Silla, Chile, and they were analysed using difference image analysis to obtain high-precision light curves of the variable stars. Results. It was possible to identify and classify all of the previously known or suspected variable stars in the central regions of the five clusters. Furthermore, we were able to identify and, in most cases, classify 48, 49, 7, 8, and 2 previously unknown variables in NGC 6388, NGC 6441, NGC 6528, NGC 6638, and NGC 6652, respectively. Especially interesting is the case of NGC 6441, for which the variable star population of about 150 stars has been thoroughly examined by previous studies, including a Hubble Space Telescope study. In this paper we are able to present 49 new variable stars for this cluster, of which one (possibly two) are RR Lyrae stars, two are W Virginis stars, and the rest are long-period semi-regular or irregular variables on the red giant branch. We have also detected the first double-mode RR Lyrae in the cluster.
DOI:doi:10.1051/0004-6361/201424967
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: https://doi.org/10.1051/0004-6361/201424967
 Volltext: https://www.aanda.org/articles/aa/abs/2015/01/aa24967-14/aa24967-14.html
 DOI: https://doi.org/10.1051/0004-6361/201424967
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1701036665
Verknüpfungen:→ Zeitschrift

Permanenter Link auf diesen Titel (bookmarkfähig):  https://katalog.ub.uni-heidelberg.de/titel/68588573   QR-Code
zum Seitenanfang