Variable stars in the bulge globular cluster NGC 6401

Tsapras, Y.; Arellano Ferro, A.; Bramich, D. M.; Jaimes, R. Figuera; Kains, N.; Street, R.; Hundertmark, M.; Horne, K.; Dominik, M.; Snodgrass, C.

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dc.contributor.author	Tsapras, Y.
dc.contributor.author	Arellano Ferro, A.
dc.contributor.author	Bramich, D. M.
dc.contributor.author	Jaimes, R. Figuera
dc.contributor.author	Kains, N.
dc.contributor.author	Street, R.
dc.contributor.author	Hundertmark, M.
dc.contributor.author	Horne, K.
dc.contributor.author	Dominik, M.
dc.contributor.author	Snodgrass, C.
dc.date.accessioned	2017-01-13T16:30:09Z
dc.date.available	2017-01-13T16:30:09Z
dc.date.issued	2017-02
dc.identifier.citation	Tsapras , Y , Arellano Ferro , A , Bramich , D M , Jaimes , R F , Kains , N , Street , R , Hundertmark , M , Horne , K , Dominik , M & Snodgrass , C 2017 , ' Variable stars in the bulge globular cluster NGC 6401 ' , Monthly Notices of the Royal Astronomical Society , vol. 465 , no. 2 , pp. 2489-2504 . https://doi.org/10.1093/mnras/stw2773	en
dc.identifier.issn	0035-8711
dc.identifier.other	PURE: 248877760
dc.identifier.other	PURE UUID: d8733baf-3996-47f7-b871-383f82ce84e7
dc.identifier.other	ArXiv: http://arxiv.org/abs/1610.09911v1
dc.identifier.other	WOS: 000393785500087
dc.identifier.other	ORCID: /0000-0002-3202-0343/work/75996748
dc.identifier.other	Scopus: 85018499575
dc.identifier.uri	https://hdl.handle.net/10023/10101
dc.description.abstract	We present a study of variable stars in globular cluster NGC 6401. The cluster is only 5.3º away from the Galactic centre and suffers from strong differential reddening. The photometric precision afforded us by difference image analysis resulted in improved sensitivity to variability in formerly inaccessible interior regions of the cluster. We find 23 RRab and 11 RRc stars within one cluster radius (2.4'), for which we provide coordinates, finder-charts and time-series photometry. Through Fourier decomposition of the RR Lyrae star light curves we derive a mean metallicity of [Fe/H]UVES = -1.13 ± 0.06 ([Fe/H]ZW = -1.25 ± 0.06), and a distance of d ≈ 6.35 ± 0.81 kpc. Using the RR Lyrae population, we also determine that NGC 6401 is an Oosterhoff type I cluster.
dc.language.iso	eng
dc.relation.ispartof	Monthly Notices of the Royal Astronomical Society	en
dc.rights	© 2016, the Author(s). This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at www.academic.oup.com / https://doi.org/10.1093/mnras/stw2773	en
dc.subject	Stars: variables: RR Lyrae	en
dc.subject	Globular clusters: individual: NGC 6401	en
dc.subject	QB Astronomy	en
dc.subject	QC Physics	en
dc.subject	NDAS	en
dc.subject.lcc	QB	en
dc.subject.lcc	QC	en
dc.title	Variable stars in the bulge globular cluster NGC 6401	en
dc.type	Journal article	en
dc.description.version	Postprint	en
dc.contributor.institution	University of St Andrews. School of Physics and Astronomy	en
dc.identifier.doi	https://doi.org/10.1093/mnras/stw2773
dc.description.status	Peer reviewed	en

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