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A dwarf irregular galaxy at the edge of the Local Group: Stellar populations and distance of IC 5152
Albert A. Zijlstra, Dante Minniti
We have obtained V and I-band photometry for about 700 stars in the field of the dwarf irregular galaxy IC 5152, previously considered a possible member of the Local Group. Deep VI…
Towards an Understanding of the Globular Cluster Over--abundance around the Central Giant Elliptical NGC 1399
Markus Kissler-Patig, Carl J. Grillmair, Georges Meylan +3
We investigate the kinematics of a combined sample of 74 globular clusters around NGC 1399. Their high velocity dispersion, increasing with radius, supports their association with…
The MACHO Project Large Magellanic Cloud Variable Star Inventory. VIII. The Recent Star Formation History of the LMC from the Cepheid Period Distribution
C. Alcock, R. A. Allsman, D. R. Alves +20
We present an analysis of the period distribution of Cepheids in the Large Magellanic Cloud, based on data obtained by the MACHO microlensing experiment and on a previo…
The Stellar Populations of NGC 3109: Another Dwarf Irregular Galaxy with a Population II Stellar Halo
Dante Minniti, Albert Zijlstra, M. Victoria Alonso
We have obtained V and I-band photometry for about 17500 stars in the field of the dwarf irregular galaxy NGC3109, located in the outskirts of the Local Group. The photometry allow…
The MACHO Project LMC Variable Star Inventory: Classical Cepheids, AGB Variables, and the 9 Million Star Color-Magnitude Diagram
D. R. Alves, A. Basu, K. H. Cook +18
This paper has been withdrawn
The MACHO Project LMC Variable Star Inventory. VI. The Second-overtone Mode of Cepheid Pulsation From First/Second Overtone (FO/SO) Beat Cepheids
The MACHO Collaboration, C. Alcock, R. A. Allsman +19
MACHO Project photometry of 45 LMC FO/SO beat Cepheids which pulsate in the first and second overtone (FO and SOo, respectively) has been analysed to determine the lightcurve chara…