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J/MNRAS/422/89 Cetus dSph RR Lyrae (Monelli+, 2012)
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Beginning of ReadMe :J/MNRAS/422/89 Cetus dSph RR Lyrae (Monelli+, 2012)
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Variable stars in the Cetus dwarf spheroidal galaxy: population gradients and
connections with the star formation history.
Monelli M., Bernard E.J., Gallart C., Fiorentino G., Drozdovsky I.,
Aparicio A., Bono G., Cassisi S., Skillman E.D., Stetson P.B.
<Mon. Not. R. Astron. Soc., 422, 89-105 (2012)>
=2012MNRAS.422...89M
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ADC_Keywords: Galaxies, nearby ; Stars, variable ; Photometry, UBV
Keywords: stars: variables: RR Lyrae - galaxies: individual: Cetus dSph -
Local Group - galaxies: stellar content
Abstract:
We investigate the variable star content of the isolated, Local Group,
dwarf spheroidal (dSph) galaxy Cetus. Multi-epoch, wide-field images
collected with the Very Large Telescope/Visible Multiobject
Spectrograph camera allowed us to detect 638 variable stars (630 RR
Lyrae stars and eight anomalous Cepheids), 475 of which are new
detections. We present a full catalogue of periods, amplitudes and
mean magnitudes.
Description:
The analysis of variable stars in the Cetus dSph galaxy presented in
this paper is based on data collected in service mode using the VIMOS
camera mounted on the VLT (ESO program 081.D-0775, P.I.: E.J.
Bernard). The images were acquired during six nights between 2008 July
27 and August 8.