Intragroup diffuse light in compact groups of galaxies – II. HCG 15, 35 and 51

Intragroup diffuse light in compact groups of galaxies – II. HCG 15, 35 and 51
复制标题

致密星系群中的群内漫射光 â II HCG 15、35 和 51

DOI:
10.1111/j.1365-2966.2008.13500.x
复制
发表时间:
2008
影响因子:
4.8
通讯作者:
Mendes de Oliveira
Mendes de Oliveira
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Da Rocha;Ziegler;B. L. ;Mendes de Oliveira

文献摘要

参考文献

被引文献

相似文献

对紧致星系群中的群内光的持续研究旨在为星系群的形成和演化模型,特别是紧致星系群的形成和演化模型建立新的约束条件,而紧致星系群是诸如星系团等更大结构演化的关键部分。在本文中,我们介绍了另外三个组(HCG 15、35和51),这些组使用Calar Alto天文台(CAHA) 3.5 m望远镜上的LAICA相机观测到的深宽视场db和r波段图像。该仪器为我们提供了非常稳定的平场,这是可靠测量组内漫射光的必要条件。这些图像是用theov_wavpackage进行分析的,这是一种小波技术,可以让我们以前所未有的方式发现群体内部的成分。我们已经探测到,HCG 15、35和51的总光中分别有19%、15%和26%属于漫射成分,其颜色与老恒星群兼容,平均表面亮度可低至28.4 bmac arcsec−2。利用新的群参数重新计算了动态质量、穿越次数和质光比。并利用小波技术分析了潮汐特征。
This continuing study of intragroup light in compact groups of galaxies aims to establish new constraints to models of formation and evolution of galaxy groups, specially of compact groups, which are a key part in the evolution of larger structures, such as clusters. In this paper we present three additional groups (HCG 15, 35 and 51) using deep wide-fieldB- andR-band images observed with the LAICA camera at the 3.5-m telescope at the Calar Alto observatory (CAHA). This instrument provides us with very stable flat-fielding, a mandatory condition for reliably measuring intragroup diffuse light. The images were analysed with theov_wavpackage, a wavelet technique that allows us to uncover the intragroup component in an unprecedented way. We have detected that 19, 15 and 26 per cent of the total light of HCG 15, 35 and 51, respectively, are in the diffuse component, with colours that are compatible with old stellar populations and with mean surface brightness that can be as low as 28.4Bmag arcsec−2. Dynamical masses, crossing times and mass-to-light ratios were recalculated using the new group parameters. Also tidal features were analysed using the wavelet technique.
DOI: --
发表时间: 1995
期刊:
影响因子: --
作者:
R. Pildis;J. Bregman;J. Schombert
通讯作者: J. Schombert
DOI: --
发表时间: 1988
期刊:
影响因子: --
作者:
P. Hickson;E. Kindl;J. Huchra
通讯作者: J. Huchra
后发星团中的大规模漫射光:多尺度方法
DOI: --
发表时间: 2004
期刊:
影响因子: --
作者:
C. Adami;É. Slezak;F. Durret;C. Conselice;J. Cuillandre;J. Gallagher;A. Mazure;R. Pelló;J. Picat;M. Ulmer
通讯作者: M. Ulmer
DOI: 10.1086/126318
发表时间: 1951-04
影响因子: 3.5
作者:
F. Zwicky
通讯作者: F. Zwicky
DOI: --
发表时间: 2000
期刊:
影响因子: --
作者:
S. Nishiura;Masashi Shimada;Y. Ohyama;T. Murayama;Y. Taniguchi
通讯作者: Y. Taniguchi