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arXiv 0908.3657astro-ph.CO
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在“螺旋、桥和尾”相互作用星系巡天中的潮汐矮星系、吸积尾和“串珠”

Tidal Dwarf Galaxies, Accretion Tails, and `Beads on a String' in the `Spirals, Bridges, and Tails' Interacting Galaxy Survey

Beverly J. Smith, Mark L. Giroux, Curtis Struck, Mark Hancock, Sabrina Hurlock

摘要:

我们已经使用GALEX紫外望远镜研究了恒星星族和恒星形成的形态在一个明确的样本超过30个附近的光学选择合并前相互作用的星系对。我们将GALEX NUV和FUV图像与斯隆数字化巡天的宽带光学地图相结合,研究了潮汐特征和盘的年龄和位置。我们已经确定了一些新的候选潮汐矮星系在这个样本中,以及其他有趣的形态,如吸积尾巴,“珠串”,和“铰链块”。只有在少数情况下,在HI地图上看到强烈的潮汐特征,而在GALEX中看不到。

英文摘要:

We have used the GALEX ultraviolet telescope to study stellar populations and star formation morphology in a well-defined sample of more than three dozen nearby optically-selected pre-merger interacting galaxy pairs. We have combined the GALEX NUV and FUV images with broadband optical maps from the Sloan Digitized Sky Survey to investigate the ages and extinctions of the tidal features and the disks. We have identified a few new candidate tidal dwarf galaxies in this sample, as well as other interesting morphologies such as accretion tails, `beads on a string', and `hinge clumps'. In only a few cases are strong tidal features seen in HI maps but not in GALEX.

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。

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