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The astrophysical parameters of Majaess-95 and Majaess-225
Authors:A. L. Tadross
Affiliation:Galaxy Lab, Astronomy Department, National Research Institute of Astronomy and Geophysics, Helwan, Cairo, Egypt
Abstract:Most astrophysical parameters of the two stellar clusters Majaess 95 and Majaess 225 have been investigated here for the first time using the third data release of the Gaia space mission (Gaia-DR3). The membership probabilities of stars were assigned using the pyUPMASK algorithm. The parallaxes offset has been corrected using the zero-point correction code of Lindegren et al. (Lindegren et al. 2021, A&A, 649, A4). Using the clusters' members with membership probabilities >0.50, we calculated the distance to the clusters of 3311 and 3020 (±130) pc, respectively, which agree with the results from our isochrone fitting on the color-magnitude diagram. The ages are found to be 282 (±20) and 12.6 (±2) Ma. Also, the reddening, heliocentric distances, luminosity function, mass function, and total mass were estimated. On studying the dynamic state (relaxation time), we found that Majaess-95 is a relaxed cluster, while Majaess-225 is not relaxed yet.
Keywords:Open cluster and associations  individual  Majaess-95 and Majaess-225  proper motion  color-magnitude diagram  luminosity function  mass function  total mass  database: GAIA-DR3
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