Author/Authors :
karim, layth m. university of baghdad - college of science - department of astronomy and space, Iraq , ezzat, rami z. ministry of science and technology - atmospheric science and space center، space technology and communication directorate, Iraq , abdulhamed, ahmed a. university of baghdad - college of science - department of astronomy and space, Iraq
Abstract :
Low mass brown dwarf stars in the northern hemisphere were investigated; their population and metallicity have been determined using the spectroscopic technique. The classification of these stars was pointed out as belongs to population I, varies in metallicity range between -0.417 ≤ z ≤ 0.143.
