Atomic Hydrogen in the Powerful Radio-Infrared Galaxies 4C 12.50 and 3C 433
Atomic Hydrogen in the Powerful Radio-Infrared Galaxies 4C 12.50 and 3C 433
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强大的射电红外星系 4C 12.50 和 3C 433 中的原子氢
DOI：
10.1086/185427
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
I. Mirabel
中科院分区：
文献类型：
--
作者：
I. Mirabel
在4C 12.50和3C 433的吸收中检测到了21厘米的氢原子线，这两个星系的红移超过0.1，其射电功率与射电大声类星体相当。N（H I）= 2-7 × 10 ~ 18 T（s）atoms/cm ~ 2的柱密度和近1000 km/s的线宽度表明这两个星系合并系统中存在大量的湍流冷气体。4C 12.50和3C 433的特殊射电形貌是由高密度环境气体对射电喷流的约束和弯曲造成的。4C 12.50在红外和星际气体性质上可与IC 4553（阿普220）相媲美，是研究超亮红外星系与强射电星系演化联系的最佳实例。参考文献23篇。
The 21-cm line of atomic hydrogen was detected in absorption in 4C 12.50 and 3C 433, two galaxies at redshifts beyond 0.1 that have radio powers comparable to that of radio-loud quasars. The column densities of N(H I) = 2-7 x 10 to the 18th T(s) atoms/sq cm with line extents of almost 1000 km/s are indicative of large amounts of turbulent cold gas in these two systems of merging galaxies. The peculiar radio morphologies of 4C 12.50 and 3C 433 result from confinement and bending of the radio jets by the high-density ambient gas. 4C 12.50 rivals IC 4553 (Arp 220) in infrared and interstellar gas properties, and it is the best instance to study the evolutionary link between ultraluminous infrared galaxies and powerful radio galaxies. 23 refs.