A Chandra observation of the z= 2.285 galaxy FSC 10214+4724: evidence for a Compton-thick quasar?
A Chandra observation of the z= 2.285 galaxy FSC 10214+4724: evidence for a Compton-thick quasar?
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钱德拉对 z= 2.285 星系 FSC 10214 4724 的观测：存在康普顿厚类星体的证据？
DOI：
10.1111/j.1745-3933.2005.08621.x
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发表时间：
2004
影响因子：
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通讯作者：
C. Vignali
中科院分区：
文献类型：
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作者：
D. Alexander;G. Chartas;F. Bauer;W. Brandt;Chris Simpson;C. Vignali
我们对z = 2.285的强透镜超亮红外星系FSC 10214 + 4724进行了约20 ks的Chandra ACIS-S观测。虽然这一观测结果达到了高达104 M sChandra曝光的等效灵敏度，（当对引力透镜进行校正时），FSC 10214 + 4724的静止框架1.6 - 26.3 keV发射很弱（L X 102 × 10 42 erg s −1，透镜增强100）;这种X射线发射的很大一部分似乎是由于剧烈的星星形成活动。如果FSC 10214 + 4724拥有类星体，那么它一定被康普顿厚度的物质所掩盖。我们将FSC 10214 + 4724与高红移SCUBA星系进行了比较，并讨论了高红移下康普顿厚度活动星系核的X射线鉴别。
We present a ≈20 ks Chandra ACIS-S observation of the strongly lensed z = 2.285 ultraluminous infrared galaxy FSC 10214 + 4724. Although this observation achieves the equivalent sensitivity of an up to ≈ 4M sChandra exposure (when corrected for gravitational lensing), the rest-frame 1.6‐26.3 keV emission from FSC 10214 + 4724 is weak (L X ≈ 2 × 10 42 erg s −1 for a lensing boost of ≈100); a significant fraction of this X-ray emission appears to be due to vigorous star formation activity. If FSC 10214 + 4724 hosts a quasar, as previously suggested, then it must be obscured by Compton-thick material. We compare FSC 10214 + 4724 to high-redshift SCUBA galaxies and discuss the X-ray identification of Compton-thick AGNs at high redshift.