Modelling of the nebular enviroments; determination of the Lyman continuum spectra, physical characteristics and chemical composition of HII regions and planetary nebulae; developing the optimized photoionization modelling (OPhM) method of the nebular objects; developing the multicomponent photoionization modelling method (MPhM) of the dwarf galaxies with active star formation processes on the base of the chenodynamical simulations of their evolution; determination of the primordial helium abundance and its enrichment during stellar chemical evolution of matter; investigation of stellar wind bubbles insight HII regions surrounding the starburst regions using Lyman continuum spectra obtained from OPhMs of surrounding HII regions.

• Melekh B.Ya. Photoionization analysis of chemodynamical dwarf galaxies simulations / Melekh B.Ya., Recchi S., Hensler G., Buhajenko O.// Monthly Notices of the Royal Astronomical Society. – 2015. – Vol. 450. – Issue 1. – P. 111-127.

• Melekh B.Ya. Envelope masses and distances to planetary nebulae: IC 5117 and NGC 7293 / Melekh B.Ya., Demchyna A.V., Holovatyi V.V. // Kinematics and Physics of Celestial Bodies. – 2015. – Vol. 31. – Issue 2. – P. 73-81.
• Melekh B.Ya. Relationship between intensities of strong emission lines in the spectra of H II regions and their chemical compositions / Melekh B.Ya., Pilyugin L.S., Korytko R.I. // Kinematics and Physics of Celestial Bodies. – 2012. – Vol. 28. – Issue 4. – P. 189-202.
• Melekh B.Ya. Determination of the physical parameters, Lyman continua, and chemical compositions of HII regions in blue compact dwarf galaxies / Melekh B.Ya., Holovatyy V.V., Izotov Yu.I. // Astronomy Reports. – 2008. – Vol. 52. – Issue 3. – P. 184-200.
• Koshmak I.O. Multicomponent simulation of emission of low-metallicity H II regions / Koshmak I.O., Melekh B.Ya. / Kinematics and Physics of Celestial Bodies. – 2014. – Vol. 30. – Issue 2. – P. 70-84.
• Holovatyy V.V. Chemical composition of planetary nebulae in the Large and Small Magellanic Clouds / Holovatyy V.V., Melekh B.Ya., Sokil M.M., Havrylova, N. V. // Astronomy Reports. – 2013. – Vol. 57. – Issue 5. – P. 366-379.

Birth date: September 20, 1973

Education: Faculty of Physics, Ivan Franko Lviv State University (1991-1995), speciality: physicist.

1995-2003: Engineer of Astronomical Observatory of Lviv Ivan Franko State/National University.

2003: Ph.D. :Investigation of physical characteris and chemical composition of HII regions in blue compact dwarf galaxies, Kyiv-2003, supervisor: Dr. Volodymyr Holovatyy .

2003-2015: Docent, Department of Astrophysics, Ivan Franko National University of Lviv.

Since 2010: Senior researcher.

Since February 2015: Acting head of Astrophysics department, Ivan Franko National University of Lviv.

November 6, 2015: Doctor of Physical and Mathematical Sciences:Modelling of the nebular environments radiation, Kyiv-2015.

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