HST NIR对3CR射电源对应体的快照调查II：主星系、合并和伴随星系的图集和目录
HST NIR Snapshot Survey of 3CR Radio Source Counterparts II: An Atlas and Inventory of the Host Galaxies, Mergers and Companions
摘要：
我们提出了一个H波段（1.6微米）的z<0.3 3CR射电星系图集的第二部分，使用哈勃太空望远镜近红外相机和多目标光谱仪（HST NICMOS 2）。我们为21个最近获得的来源提供了新的成像，并为101个完整样本（包括11个档案）提供了宿主星系建模-完成率为87%。两种不同的建模技术应用，以下所采用的星系形态和类星体宿主星系社区。结果进行了比较，并发现是非常好的协议，虽然前者打破的情况下，强成核源。伴源列表，并存在的合并，潮汐功能，尘埃盘和喷流编目。表格形成了一个目录，为那些有兴趣的结构和形态的无尘宿主星系的3CR样本的属性，并与静止星系和类星体宿主星系的形态研究进行比较。主星系的质量被估算出来，通常在2*10^11太阳质量左右。一般来说，这个星群与静止椭圆星系的星群一致，但有一个较长的尾巴，主要由低红移（z<0.1）和低射电源（FR I）组成。一些异常盘状的FR II宿主星系被挑选出来作进一步讨论。在我们的大多数图像中，都可以识别出附近的外部来源，其中许多我们认为可能是伴星系或合并残留物。减少NICMOS数据现在公开从我们的网站（http：//archive.stsci.edu/pregu/3cr/）
英文摘要：
We present the second part of an H-band (1.6 microns) atlas of z<0.3 3CR radio galaxies, using the Hubble Space Telescope Near Infrared Camera and Multi-Object Spectrometer (HST NICMOS2). We present new imaging for 21 recently acquired sources, and host galaxy modeling for the full sample of 101 (including 11 archival) -- an 87% completion rate. Two different modeling techniques are applied, following those adopted by the galaxy morphology and the quasar host galaxy communities. Results are compared, and found to be in excellent agreement, although the former breaks down in the case of strongly nucleated sources. Companion sources are tabulated, and the presence of mergers, tidal features, dust disks and jets are catalogued. The tables form a catalogue for those interested in the structural and morphological dust-free host galaxy properties of the 3CR sample, and for comparison with morphological studies of quiescent galaxies and quasar host galaxies. Host galaxy masses are estimated, and found to typically lie at around 2*10^11 solar masses. In general, the population is found to be consistent with the local population of quiescent elliptical galaxies, but with a longer tail to low Sersic index, mainly consisting of low-redshift (z<0.1) and low-radio-power (FR I) sources. A few unusually disky FR II host galaxies are picked out for further discussion. Nearby external sources are identified in the majority of our images, many of which we argue are likely to be companion galaxies or merger remnants. The reduced NICMOS data are now publicly available from our website (http://archive.stsci.edu/prepds/3cr/)
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
