蓝盘计划观测的富HI星系和控制星系环境中星系的HI标度关系
HI scaling relations of galaxies in the environment of HI-rich and control galaxies observed by the Bluedisk project
摘要：
我们的工作是基于“蓝盘”项目，一个程序来映射中性气体的样品中的25 HI丰富的螺旋和类似数量的控制星系与韦斯特博克合成射电望远镜（WSRT）。在本文中，我们专注于我们的目标星系的环境中的星系的HI属性。总共，我们提取65个星系的WSRT立方体与恒星质量之间的$10^8M_{\odot}$和$10^{11}M_{\odot}$。这些星系中的大多数都位于相同的HI质量大小关系和“HI平面”作为正常的旋涡星系。我们发现富HI星系周围的伴星也往往是富HI的，并且具有较大的R90，HI/R50，HI。这表明了一种“HI一致性”的情况，类似于Weinmann等人（2006）发现的颜色一致性：星系倾向于采用其邻居的HI特性。我们从视觉上检查异常值的HI质量大小关系和星系的HI平面偏移，发现它们显示最近与环境的相互作用的形态和运动学签名。我们推测，这些离群值已被潮汐或冲压压力剥离过程，或在少数情况下，由吸积事件。
英文摘要：
Our work is based on the "Bluedisk" project, a program to map the neutral gas in a sample of 25 HI-rich spirals and a similar number of control galaxies with the Westerbork Synthesis Radio Telescope (WSRT). In this paper we focus on the HI properties of the galaxies in the environment of our targeted galaxies. In total, we extract 65 galaxies from the WSRT cubes with stellar masses between $10^8M_{\odot}$ and $10^{11}M_{\odot}$. Most of these galaxies are located on the same HI mass-size relation and "HI-plane" as normal spiral galaxies. We find that companions around HI-rich galaxies tend to be HI-rich as well and to have larger R90,HI/R50,HI. This suggests a scenario of "HI conformity", similar to the colour conformity found by Weinmann et al. (2006): galaxies tend to adopt the HI properties of their neighbours. We visually inspect the outliers from the HI mass-size relation and galaxies which are offset from the HI plane and find that they show morphological and kinematical signatures of recent interactions with their environment. We speculate that these outliers have been disturbed by tidal or ram-pressure stripping processes, or in a few cases, by accretion events.
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。
