Akademik Veri Yönetim Sistemi
Tezin Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Yıldız Teknik Üniversitesi, Fen Bilimleri Enstitüsü, Türkiye
Tezin Onay Tarihi: 2025
Tezin Dili: İngilizce
Öğrenci: EZGİ ALTINTAŞ
Asıl Danışman (Eş Danışmanlı Tezler İçin): Murat Hüdaverdi
Eş Danışman: Sinan Aliş
Özet:
Although star formation is generally not expected in elliptical galaxies, brightest cluster galaxies (BCGs), which are typically massive ellipticals, can still exhibit star formation activity. While H$\alpha$ and [OII] emission lines are commonly used as tracers of star formation in galaxies, there is a limited number of studies investigating the spatial gas distributions in detail due to lack of necessary observational data. Integral-field spectroscopy made it possible to explore spatial characteristics of the ionized gas in galaxies. Thus, in this study we analyzed the gas morphology and distribution in 53 BCGs via extraction of emission line maps and their characterization. We further examined the dependence of gas morphology on redshift and richness as a proxy for environmental density. Our results show no significant correlation between environmental density and gas morphology. However, a positive correlation is found between redshift and the spatial extent of emission. We found 37 galaxies in our sample have more centrally concentrated and symmetric H$\alpha$ distributions, whereas 41 of them show the similar behavior in [OII]. It is worth noting that, galaxies showing symmetric behaviors are different in both lines as the Kolmogorov-Smirnov test suggests. This could be due to different physical states of the gas in these galaxies which can be originated by the different excitation source such as AGN or LINER activity in the nuclear part of the galaxy.