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The extended star formation history of the star cluster NGC 2154 in the Large Magellanic Cloud
Gustavo Baume, Giovanni Carraro, Edgardo Costa +2
The color-magnitude diagram (CMD) of the intermediate-age Large Magellanic Cloud (LMC) star cluster NGC 2154 and its adjacent field, has been analyzed using Padova stellar models t…
Photometry of the five marginally studied open clusters Collinder 74, Berkeley 27, Haffner 8, NGC 2509 and VdB-Hagen 4
Giovanni Carraro, Edgardo Costa
The stellar populations in the outer Galactic disk are nowadays a subject of wide interest. To contribute to a better picture of this part of the Galaxy, we have studied the nature…
The Solar Neighborhood XVII: Parallax Results from the CTIOPI 0.9m Program -- Twenty New Members of the RECONS 10 Parsec Sample
Todd J. Henry, Wei-Chun Jao, John P. Subasavage +4
Astrometric measurements for 25 red dwarf systems are presented, including the first definitive trigonometric parallaxes for 20 systems within 10 pc of the Sun, the horizon of the…
Old Main-Sequence Turnoff Photometry in the SMC
Noelia E. D. Noel, Carme Gallart, Edgardo Costa +1
We present ground-based {\it B} and {\it R}-band color-magnitude diagrams (CMDs) of unprecedented depth for twelve fields in the Small Magellanic Cloud (SMC). They reach the oldest…
Photometry of seven overlooked open clusters in the First and Fourth Galactic Quadrants
Giovanni Carraro, Kenneth A. Janes, Edgardo Costa +1
CCD BVI photometry is presented for 7 previously unstudied star clusters projected toward the inner side of the Galaxy: Trumpler 23, Lynga 3, Collinder 307, Ruprecht 134, ESO552SC1…
The Proper Motion of the Large Magellanic Cloud: A Reanalysis
Mario H. Pedreros, Edgardo Costa, Rene A. Mendez
We have determined the proper motion (PM) of the Large Magellanic Cloud (LMC) relative to four background quasi-stellar objects, combining data from two previous studies made by ou…