activity
20142018
most citedDeep Hubble Space Telescope Imaging of Globular Clusters Towards the Galactic Bulge: Observations, Data Reduction and Color-Magnitude Diagrams

25 citations · 56 across the 4 of their papers we have counts for

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Showing astro-ph.SRShow all

3 papers · 1 filter

astro-ph.SR2015

The pulsating variable star population in DDO210

Antonio J. Ordoñez, Ata Sarajedini

We have probed the pulsating variable star content of the isolated Local Group dwarf galaxy, DDO210 (Aquarius), using archival Advanced Camera for Surveys/ $Telesco…

astro-ph.SR2015★ 14 cited

Population Effects on the Metallicity Distribution Function Derived From the Red Giant Branch

Antonio J. Ordoñez, Ata Sarajedini

We have tested the reliability of the red giant branch (RGB) as a metallicity indicator accounting for observational errors as well as the complexity of star formation histories (S…

astro-ph.SR2014★ 12 cited

The RR Lyrae Variable Population in the Phoenix Dwarf Galaxy

Antonio J. Ordoñez, Soung-Chul Yang, Ata Sarajedini

We present the first detailed study of the RR Lyrae variable population in the Local Group dSph/dIrr transition galaxy, Phoenix, using previously obtained HST/WFPC2 observations of…