Atmospheric and Fundamental Parameters of Eight Nearby Multiple Stars

Abstract We present the complete set of atmospheric and fundamental parameters, in addition to masses, for individual components eight stellar systems. The list systems, whose orbital solutions were published recently, includes seven binaries (HIP 14524, HIP 16025, 46199, 47791, 60444, 61100, 73085) one triple system 28671). systems analyzed using a spectrophotometric computational technique known as Al-Wardats method analyzing binary multiple which makes use ATLAS9 line-blanketed plane-parallel model atmospheres. Using these estimated positions located on Hertzsprung–Russell diagram, evolutionary tracks isochrones estimate their ages, range depending uncertainties metallicities. Five found be pre-main-sequence stars 73085), two main-sequence (the zero-age 28671 6.3 Gyr 16025), is subgiant 47791) with an age 1.4 Gyr. Fragmentation proposed most probable formation process A comparison between masses dynamical ones lead new parallaxes four systems: (28.63 ± 0.56) mas (15.6 0.63) (9.73 0.26) (16.53 0.59) 73085. Hence, reclassified. conclude that Gaia DR3 are more precise than those given by DR2 Hipparcos 2.