International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
Call for Papers | Fully Refereed | Open Access | Double Blind Peer Reviewed

ISSN: 2319-7064


Downloads: 144 | Views: 216

Research Paper | Astronomy Science | Iraq | Volume 7 Issue 1, January 2018


Calculate the Physical Properties for Samples of Active Galaxies Using Optical Spectroscopy Technique

Hasanain.H Al-Dahlaki


Abstract: Active galaxies are very special type of sources, where still many of their properties not fully understood yet. Therefore, in this project some of unstudied active galaxies are chosen and there are calculated physical properties, furthermore, the cooperation between the results are achieved. In this work three different types of active galaxies ( Seyferts-I, Seyferts-II, and Quasars) are used. Each type is included three samples. The calculated properties for each samples are (Supermassive black hole mass, Eddington Rate, and the Luminosity distance) and the relation between these physical properties are discussed. The data in this project has been taken from Sloan Digital Sky Survey SDSS, as a optical spectroscopic type. From the obtained results, the Supermassive black hole masses (SMBH) are heavier in the quasars with respect to the Seyferts type (1 and 2) Objects in a factor of 1.6 in average, and that will lead to another conclusion that the Star Formation Rate (SFR) in galaxies type quasars are higher than for galaxies type Seyferts (1 and 2). Also the relation between Star Formation (SF) and Supermassive black hole masses (SMBH) are calculated. Finally I have noted that with higher (SMBH) we will have high star formation rate (SFR).


Keywords: active galactic nuclei, Star Formation rate SFR, SMBH


Edition: Volume 7 Issue 1, January 2018,


Pages: 847 - 854


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