An analysis of the twenty-five most distant open clusters

GABRIEL I. PERREN; MARÍA SOL PERA; GIORGI, E.; HUGO D. NAVONE; RUBÉN A. VÁZQUEZ

BAAA

Asociación Argentina de Astronomía

Lugar: La Plata; Año: 2022 vol. 63 p. 124 - 126

1669-9521

We present an analysis of the twenty-five open cluster with the largest catalogued distances to the Sun (> 9 kpc). The clusters are selected after cross-matching the four largest published catalogs to date. Distance values in these catalogs show enormous differences between them. The data used to perform the analysis (astrometry and photometry) is taken from the latest release of the Gaia survey. All clusters are processed with two of our most recent codes: pyUPMASK (responsible for selecting the most probable members) and ASteCA (employed to estimate the structural properties as well as the fundamental parameters). We find that the distances for these twenty-five open clusters show differences of up to 10 kpc. Even the catalog that has the closest agreement with the distances obtained after our analysis presents differences of up to 3 kpc.