Abell 1589 Gökada Kümesinin Optik Işınım Gücü Fonksiyonu

Öz

Bu çalışmada düzensiz görünümde olan ve dinamik süreci devam eden Abell 1589 (z=0.0709) gökada kümesinin TUG-RTT150 Teleskobu optik çalışması sunulmuştur. Küme üyesi her bir gökadanın (20${\leqslant}M_r{\leqslant}$23) g$^\prime$, r$^\prime$ ve i$^\prime$ filtrelerinde parlaklık değerleri elde edilmiştir ve (g$^\prime$-r$^\prime$)-r$^\prime$ renk-parlaklık diyagramı sunulmuştur. Her bir filtre için ışınım gücü fonksiyonları (Luminosity Function-LF) elde edilmiştir. Elde edilen LF'lerin Schechter+Schechter fonksiyonu ile uyumlu olduğu görülmüştür. Karakteristik mutlak parlaklıklar olarak elde edilen Schechter+Schechter fonksiyonunun en uygun parametre değerleri, g$^\prime$, r$^\prime$ ve i$^\prime$ filtrelerinde sırasıyla, -20.02${\pm}$0.06 ve -18.73${\pm}$0.01, -20.91${\pm}$0.05 ve -20.34${\pm}$0.02, -21.57${\pm}$0.06 ve -21.05${\pm}$0,06 ve sönük uçtaki eğimler ise -1.58${\pm}$0.06 ve -0.74${\pm}$0.02, -1.65${\pm}$0.04 ve -0.78${\pm}$0.02, -1.62${\pm}$0.04 ve -0.78${\pm}$0.04 olarak elde edilmiştir.

Anahtar Kelimeler

• galaxies: clusters: individual
• galaxies: general
• galaxies:photometry

Destekleyen Kurum

Tug TUBİTAK

Proje Numarası

16ARTT150-958

Teşekkür

TUBİTAK-TUG'a desteklerinden dolayı teşekkür ederiz. Gözlemler, RTT150 (Rus-Türk Teleskopu) 16ARTT150-958 numaralı proje ile gerçekleştirilmiştir.

Optical Luminosity Function of the Abell 1589 Galaxy Cluster

Öz

The optical photometric observations with the Russian-Turkish 1.5-m RTT-150 telescope are presented for Abell 1589 (z=0.0709), an irregular galaxy cluster in a dynamical state. Magnitudes of each cluster member galaxy (20${\leqslant}M_r{\leqslant}$23) determined for the g$^\prime$, r$^\prime$ and i$^\prime$ filters and presented the (g$^\prime$-r$^\prime$) vs r$^\prime$ color-magnitude diagram of Abell 1589. We generated the Luminosity Function (Luminosity Function-LF) of galaxies for each filter. For each filter, the resulting LF of cluster galaxies is well-fitted by the Schechter+Schechter Function. The best-fitting parameter values derived as the characteristic absolute magnitudes are -20.02${\pm}$0.06 and -18.73${\pm}$0.01, -20.91${\pm}$0.05 and -20.34${\pm}$0.02, -21.57${\pm}$0.06 and -21.05${\pm}$0,06 and the slope at the faint end of the LF are -1.58${\pm}$0.06 and -0.74${\pm}$0.02, -1.65${\pm}$0.04 and -0.78${\pm}$0.02, -1.62${\pm}$0.04 and -0.78${\pm}$0.04 for g$^\prime$, r$^\prime$ and i$^\prime$ filters, respectively.

Anahtar Kelimeler

• galaxies: clusters: individual
• galaxies: general
• galaxies:photometry

Proje Numarası

16ARTT150-958

Kaynakça

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