本文選題：團(tuán)成員星系 + 類型分層��； 參考：《上海師范大學(xué)》2013年碩士論文

【摘要】：星系團(tuán)的顏色分布與類型分層效應(yīng)是星系團(tuán)形成與長(zhǎng)時(shí)間演化累積而成的統(tǒng)計(jì)現(xiàn)象。通過研究星系團(tuán)顏色分布及類型分層效應(yīng)，根據(jù)星系團(tuán)中不同類型的星系性質(zhì)，分析環(huán)境對(duì)各類型星系演化過程的影響。近年來研究顯示：團(tuán)星系與場(chǎng)星系的形態(tài)類型的比例并不一致，晚型星系受環(huán)境影響其演化路徑、形態(tài)以及對(duì)應(yīng)的光學(xué)特征不盡相同。通過研究Coma星系團(tuán)成員星系形態(tài)類型與顏色的分布，可以分析星系團(tuán)動(dòng)力學(xué)演化與模型，分析星系團(tuán)子結(jié)構(gòu)以及相關(guān)的動(dòng)力學(xué)性質(zhì)和歷史。文中選用Beijersbergen和van der Hulst（2002）的數(shù)據(jù)，分析觀測(cè)波段、星系分類、并剔除可能不準(zhǔn)確的數(shù)據(jù)，得到滿足條件的數(shù)據(jù)，研究星系團(tuán)形態(tài)類型的分布及其顏色、顏色梯度分布。結(jié)果表明：Coma星系團(tuán)的顏色中心與星系團(tuán)光度中心或數(shù)密度中心并不重合。早、晚型星系的空間位置分布、顏色以及顏色梯度差異很大�？傮w而言，星系團(tuán)顏色表現(xiàn)為顏色中心偏紅，進(jìn)而變藍(lán)，，到最后卻緩慢變紅的總體趨勢(shì)。在離顏色中心比較遠(yuǎn)的區(qū)域，早、晚型星系的顏色梯度為正，特別是晚型星系,這也許是由于SW星系群與住星系群之間相互作用的結(jié)果。整個(gè)星系團(tuán)的顏色分布在小尺度上表現(xiàn)出一定的梯度結(jié)構(gòu)，但大尺度上并不明顯，表明Coma星系團(tuán)并沒有完全維里化，證明了團(tuán)成員早、晚型星系在空間位置、顏色分布方面明顯的不同。關(guān)
[Abstract]:The effect of color distribution and type stratification of clusters is a statistical phenomenon of cluster formation and long-term evolution and accumulation. By studying the color distribution and type stratification effect of clusters, the influence of environment on the evolution of different types of galaxies is analyzed according to the properties of different types of galaxies in clusters. Recent studies have shown that the proportions of cluster galaxies and field galaxies are not the same, and the evolution path, morphology and corresponding optical characteristics of late type galaxies are different due to the influence of environment. By studying the morphological type and color distribution of galaxies in the Coma cluster, the dynamic evolution and model of the cluster, the substructure of the cluster and the related dynamic properties and history can be analyzed. In this paper, the data of Beijersbergen and van der Hulst (2002) are used to analyze the observed bands and the classification of galaxies, and to eliminate the data which may not be accurate, and to obtain the data satisfying the conditions, and to study the distribution of the morphological types of the clusters, their color and color gradient distribution. The results show that the color center of the cluster does not coincide with the luminosity center or the number density center of the cluster. The spatial distribution, color and color gradient of early and late galaxies vary greatly. In general, the cluster color shows the general trend of red center, then blue, and finally slowly red. In areas far from the color center, the color gradient of early and late galaxies is positive, especially late galaxies, which may be due to the interaction between SW galaxy group and host galaxy group. The color distribution of the whole cluster shows a gradient structure on a small scale, but it is not obvious on a large scale, indicating that the Coma cluster is not completely virified, which proves that the early and late galaxies of the cluster are located in space. A marked difference in color distribution. Pass
【學(xué)位授予單位】：上海師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：P154.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 趙君亮;;星系團(tuán)的分層效應(yīng)[J];天文學(xué)進(jìn)展;2007年03期

本文編號(hào)：1918276