在IC5063中追踪射电喷流和ISM之间的极端相互作用
Tracing the extreme interplay between radio jets and the ISM in IC5063
摘要：
我们报道了阿塔卡马探路者实验（APEX）在射电强塞弗特星系IC 5063（z = 0.0110）中发现的分子气体外流。除了大尺度CO盘的发射外，在CO（2-1）光谱中还观察到一个明显的蓝移翼。IC 5063代表了快速喷流驱动的HI（和电离气体）流出的最佳情况之一，它位于距离核约0.5 kpc的射电亮特征的位置。分子气体的蓝移部分可能与这种外流有关，并通过与射电喷流的相互作用而加速。分子气体流出的特征是流出组分的H $_2$质量在2.25 +/- 0.70 x 1 - 0^7 M_sun和1.29 +/- 0.40 x 1 - 0^8 M_sun之间，质量流出率在22和129 M_sun/yr之间，这取决于α_X的假设和假设光度比L '_CO（2-1）/L'_CO（1-0）= 1.这证实，这确实可能是核活动驱动的外流中的主要成分，其他物体中也存在这种成分。然而，这种高质量流出率不容易长时间得到支持，这表明IC 5063中的气体流出发生在爆发中，目前处于特别强的阶段。由于它的接近，IC 5063是了解射电喷流对富含气体的星际介质的影响的绝佳实验室。
英文摘要：
We report the discovery with the Atacama Pathfinder EXperiment (APEX) of an outflow of molecular gas in the radio-loud Seyfert galaxy IC5063 (z = 0.0110). In addition to the emission of the large-scale CO disk, a prominent blueshifted wing is observed in the CO(2-1) spectrum. IC5063 represents one of the best cases of a fast jet-driven HI (and ionized gas) outflow, which is located at the site of a radio-bright feature about 0.5 kpc from the nucleus. It is possible that the blueshifted part of the molecular gas is associated with this outflow and is accelerated by the interaction with the radio jet. The outflow of molecular gas is characterized by an H$_2$ mass of the outflowing component of between 2.25 +/- 0.70 x 10^7 M_sun and 1.29 +/- 0.40 x 10^8 M_sun and a mass outflow rate between 22 and 129 M_sun/yr depending on the assumption for alpha_X and assuming a luminosity ratio L'_CO(2-1)/L'_CO(1-0) = 1. This confirms that this may indeed be the dominant component in outflows driven by the nuclear activity that are also found in other objects. However, this high mass outflow rate cannot easily be supported for a long time, suggesting that the gas outflow in IC5063 happens in bursts and is in a particularly strong phase at present. Owing to its proximity, IC5063 serves as an excellent laboratory for understanding the impact of radio jets on the gas-rich inter-stellar medium.
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