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CCD photometry and membership segregation of the open cluster NGC2682 (M67)
L. Balaguer-Núñez, D. Galadí-Enríquez, C. Jordi
Following deep astrometric and photometric study of the cluster NGC2682 (M67), we are able to accurately determine its fundamental parameters. Being an old and rich cluster, M67 is…
uvby-Hbeta CCD photometry and membership segregation of the open cluster NGC 2548; Gaps in the Main Sequence of open clusters
L. Balaguer-Nunez, C. Jordi, D. Galadi-Enriquez
Deep CCD photometry in the uvby-Hbeta intermediate-band system is presented for the cluster NGC 2548 (M 48). A complete membership analysis based on astrometric and photometric cri…
Determination of proper motions and membership of the open star cluster NGC2548
Z. Y. Wu, K. P. Tian, L. Balaguer-Nunez +3
Absolute proper motions, their corresponding errors and membership probabilities of 501 stars in the intermediate-age open cluster NGC2548 region are determined from MAMA measureme…
The luminosity calibration of the uvby- photometry
C. Jordi, X. Luri, E. Masana +5
The ESA HIPPARCOS satellite has provided astrometry of unprecedented accuracy, allowing to reassess, improve and refine the pre-HIPPARCOS luminosity calibrations. We review the "cl…