68 citations · 263 across the 8 of their papers we have counts for
8 papers
Revisiting the variable star population in NGC~6229 and the structure of the Horizontal Branch
A. Arellano Ferro, P. E. Mancera Piña, D. M. Bramich +4
We report an analysis of new and CCD time-series photometry of the distant globular cluster NGC 6229. The principal aims were to explore the field of the cluster in search…
Variable Stars in the Globular Cluster NGC 288: [Fe/H] and Distance
A. Arellano Ferro, D. M. Bramich, S. Giridhar +3
A search for variable stars in the globular cluster NGC 288 was carried out using a time-series of CCD images in the and filters. The photometry of all stellar sources in t…
A detailed census of variable stars in the globular cluster NGC 6333 (M9) from CCD differential photometry
A. Arellano Ferro, D. M. Bramich, R. Figuera Jaimes +37
We report CCD and time-series photometry of the globular cluster NGC 6333 (M9). The technique of difference image analysis has been used, which enables photometric precisio…
Variable stars in the globular cluster NGC 7492. New discoveries and physical parameters determination
R. Figuera Jaimes, A. Arellano Ferro, D. M. Bramich +2
We have performed a photometric V, R, I CCD time-series analysis with a baseline of ~8 years of the outer-halo globular cluster NGC 7492 with the aim of searching for new variables…
Constraining the parameters of globular cluster NGC 1904 from its variable star population
N. Kains, D. M. Bramich, R. Figuera Jaimes +3
We present the analysis of 11 nights of V and I time-series observations of the globular cluster NGC 1904 (M 79). Using this we searched for variable stars in this cluster and atte…
The unusually large population of Blazhko variables in the globular cluster NGC 5024 (M53)
A. Arellano Ferro, D. M. Bramich, R. Figuera Jaimes +2
We report the discovery of amplitude and phase modulations typical of the Blazhko effect in 22 RRc and 9 RRab type RR Lyrae stars in NGC 5024 (M53). This brings the confirmed Blazh…