286室女星系团星系团的光学和近红外H波段观测：表面亮度分布和膨胀盘分解
A Survey of 286 Virgo Cluster Galaxies at Optical griz and Near-IR H-band: Surface Brightness Profiles and Bulge-Disk Decompositions
摘要：
我们提出了一个286个室女星系团星系的形态学上广泛的样本的Griz和H波段表面亮度轮廓和膨胀盘分解。H波段数据来自各种来源，包括我们在UH 2.2-m，CFHT和UKIRT望远镜上对171个星系的调查，以及来自Two-Micron All-Sky Survey和GOLDMine档案的另外115个星系。所有286个室女座星系的光学数据都是从斯隆数字巡天（SDSS）图像中提取的。使用我们自己的软件以均匀的方式分析了H波段和SDSS griz数据，为每个星系产生了一组一致的深，多波段表面亮度剖面。每个形态箱的平均表面亮度剖面创建，以表征整个哈勃序列的星系光剖面的品种。的1D膨胀盘分解参数，以及非参数的星系措施，如有效半径，有效表面亮度和光浓度，提出了所有286个星系在每个五个光学/近红外波段。剖面分解解释了凸起和盘组件，旋臂，核和大气模糊。室女座螺旋星系的球丘通常有一个Sersic指数n ~ 1，而椭圆星系更喜欢n ~ 2。没有一个星系椭球体需要n > 3。70%的室女座椭圆星系的光剖面揭示了球体和盘组件的存在。关于结构参数趋势的更深入讨论，请参见McDonald等人（2009 b）。这里提供的数据应作为研究星系团环境中的星系结构和恒星星族的基础。星系光剖面和膨胀盘分解结果可在斯特拉斯堡Donnees天文学中心（CDS; http://cds.u-strasbg.fr）和作者自己的网站（http：//www.astro.queensu.ca/virgo）上查阅。
英文摘要：
We present griz and H-band surface brightness profiles and bulge-disk decompositions for a morphologically-broad sample of 286 Virgo cluster galaxies. The H-band data come from a variety of sources including our survey of 171 galaxies at the UH 2.2-m, CFHT and UKIRT telescopes, and another 115 galaxies from the Two-Micron All-Sky Survey and GOLDMine archives. The optical data for all 286 Virgo galaxies were extracted from Sloan Digital Sky Survey (SDSS) images. The H-band and SDSS griz data were analyzed in a homogeneous manner using our own software, yielding a consistent set of deep, multi-band surface brightness profiles for each galaxy. Average surface brightness profiles per morphological bin were created in order to characterize the variety of galaxy light profiles across the Hubble sequence. The 1D bulge-disk decomposition parameters, as well as non-parametric galaxy measures, such as effective radius, effective surface brightness and light concentration, are presented for all 286 galaxies in each of the five optical/near-infrared wavebands. The profile decompositions account for bulge and disk components, spiral arms, nucleus and atmospheric blurring. The Virgo spiral galaxy bulges typically have a Sersic index n ~ 1, while elliptical galaxies prefer n ~ 2. No galaxy spheroid requires n > 3. The light profiles for 70% of the Virgo elliptical galaxies reveal the presence of both a spheroid and disk component. A more in-depth discussion of the structural parameter trends can be found in McDonald et al (2009b). The data provided here should serve as a base for studies of galaxy structure and stellar populations in the cluster environment. The galaxy light profiles and bulge-disk decomposition results are available at the Centre de Donnees astronomiques de Strasbourg (CDS; http://cds.u-strasbg.fr) and the author's own website (http://www.astro.queensu.ca/virgo).
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