SIMBAD references

2017MNRAS.465.2489T - Mon. Not. R. Astron. Soc., 465, 2489-2504 (2017/February-3)

Variable stars in the bulge globular cluster NGC 6401.

TSAPRAS Y., ARELLANO FERRO A., BRAMICH D.M., FIGUERA JAIMES R., KAINS N., STREET R., HUNDERTMARK M., HORNE K., DOMINIK M. and SNODGRASS C.

Abstract (from CDS):

We present a study of variable stars in globular cluster NGC 6401. The cluster is only 5 .○3 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 arcmin), 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.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: variables: RR Lyrae - globular clusters: individual: NGC 6401 - globular clusters: individual: NGC 6401

VizieR on-line data: <Available at CDS (J/MNRAS/465/2489): table34.dat table2.dat>

Nomenclature: Tables 3-4: [TAB2017] VNN N=35 among (Nos 2-37), [TAB2017] LPVNN (Nos 1-12), [TAB2017] EN (No 1).

Simbad objects: 81

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