A SPECTACULAR OUTFLOW IN AN OBSCURED QUASAR
A SPECTACULAR OUTFLOW IN AN OBSCURED QUASAR
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DOI：
10.1088/0004-637x/746/1/86
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发表时间：
2012-02-10
影响因子：
4.9
通讯作者：
Smith, Paul S.
中科院分区：
文献类型：
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作者：
Greene, Jenny E.;Zakamska, Nadia L.;Smith, Paul S.
SDSS J1356 + 1026是一对红移z = 0.123的相互作用星系，在其北方核中拥有一个明亮的遮蔽类星体。在这里，我们提出了两个长缝麦哲伦LDSS-3光谱，揭示了一对对称的类似于10千秒差距大小的流出从这个核出现，与观察到的膨胀速度类似的250公里秒（1）的投影。我们提出了这些外流的运动学模型，并认为，退投影的物理膨胀速度可能类似于1000 km s（-1），膨胀壳的动能可能是10（44-45）erg s（-1），绝对最小值> 10（42）erg s（-1）。虽然在1.4 GHz处检测到一个射电对应物，但它足够微弱，因此根据所有标准标准，类星体被认为是无线电安静的，并且没有证据表明由于射电瓣而导致的扩展发射，无论是老化还是由持续的喷流持续提供动力。我们认为，星星形成的可能水平不足以为观测到的能量外流提供动力，SDSS J1356 + 1026是无线电安静类星体反馈的一个很好的例子。为了进一步支持这一假设，偏振观测表明类星体照明的方向与外流的方向一致。
SDSS J1356 + 1026 is a pair of interacting galaxies at redshift z = 0.123 that hosts a luminous obscured quasar in its northern nucleus. Here we present two long-slit Magellan LDSS-3 spectra that reveal a pair of symmetric similar to 10 kpc size outflows emerging from this nucleus, with observed expansion velocities of similar to 250 km s (1) in projection. We present a kinematic model of these outflows and argue that the deprojected physical velocities of expansion are likely similar to 1000 km s(-1) and that the kinetic energy of the expanding shells is likely 10(44-45) erg s(-1), with an absolute minimum of > 10(42) erg s(-1). Although a radio counterpart is detected at 1.4 GHz, it is faint enough that the quasar is considered to be radio quiet by all standard criteria, and there is no evidence of extended emission due to radio lobes, whether aged or continuously powered by an ongoing jet. We argue that the likely level of star formation is insufficient to power the observed energetic outflow and that SDSS J1356 + 1026 is a good case for radio-quiet quasar feedback. In further support of this hypothesis, polarimetric observations show that the direction of quasar illumination is coincident with the direction of the outflow.