Deep, wide-field, global VLBI observations of the Hubble deep field north (HDF-N) and flanking fields (HFF)
Deep, wide-field, global VLBI observations of the Hubble deep field north (HDF-N) and flanking fields (HFF)
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哈勃深场北区 (HDF-N) 和侧翼场 (HFF) 的深部、宽视场、全球 VLBI 观测
DOI：
10.1051/0004-6361/201220783
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发表时间：
2013
影响因子：
6.5
通讯作者：
M. A. Garrett
中科院分区：
文献类型：
--
作者：
S. Chi;S. Chi;S. Chi;Pieter Barthel;M. A. Garrett;M. A. Garrett
上下文尘埃通常存在于弱无线电发射的恒星形成星系中，这些尘埃可能会掩盖这些物体中吸积黑洞的特征。目标。我们的目标是揭示弱活动星系核，活动星系核，在微弱的无线电源人口通过深高分辨率的无线电观测。方法.利用世界范围内的VLBI阵列以无与伦比的灵敏度进行了观测，以评估哈勃深场北部及其侧翼区域的微弱射电源群的性质。结果十二个紧凑的，活动星系核驱动的射电源的图像。这些代表了大约四分之一的可探测的微弱射电源样本。大多数，但不是所有这些低功率AGN都有X射线探测。结论.大多数微弱的射电源人口必须是恒星形成星系。微弱的活动星系核出现在各种各样的（遥远的）宿主星系中，这些星系通常伴随着尘埃遮蔽的星暴。深源高分辨率VLBI是一种独特的、强有力的研究微弱活动星系核的技术。
Context. Dust is commonly present in weakly radio emitting star-forming galaxies and this dust may obscure the signatures of accreting black holes in these objects. Aims. We aim to uncover weak active galactic nuclei, AGN, in the faint radio source population by means of deep high-resolution radio observations. Methods. VLBI observations with a world-wide array at unparallelled sensitivity are carried out to assess the nature of the faint radio source population in the Hubble deep field north and its flanking fields. Results. Images of twelve compact, AGN-driven radio sources are presented. These represent roughly one quarter of the detectable faint radio source sample. Most, but not all of these low power AGN have X-ray detections. Conclusions. The majority of the faint radio source population must be star-forming galaxies. Faint AGN occur in a variety of ( distant) host galaxies, and these are often accompanied by a dust-obscured starburst. Deep, high-resolution VLBI is a unique, powerful technique to assess the occurrence of faint AGN.
DOI：
10.1088/0004-637x/693/1/447
发表时间：
2008-10
期刊：
The Astrophysical Journal
影响因子：
--
作者：
F. Fiore;S. Puccetti;M. Brusa;M. Salvato;G. Zamorani;T. Aldcroft;H. Aussel;H. Brunner;P. Capak;N. Cappelluti;F. Civano;A. Comastri;M. Elvis;C. Feruglio;A. Finoguenov;A. Fruscione;R. Gilli;G. Hasinger;A. Koekemoer;J. Kartaltepe;O. Ilbert;C. Impey;E. Floc’h;S. Lilly;V. Mainieri;A. Martínez-Sansigre;H. McCracken;N. Menci;A. Merloni;T. Miyaji;D. Sanders;M. Sargent;E. Schinnerer;N. Scoville;J. Silverman;V. Smolčić;A. Steffen;P. Santini;Y. Taniguchi;D. Thompson;D. Thompson;J. Trump;C. Vignali;M. Urry;Lin Yan
通讯作者：
F. Fiore;S. Puccetti;M. Brusa;M. Salvato;G. Zamorani;T. Aldcroft;H. Aussel;H. Brunner;P. Capak;N. Cappelluti;F. Civano;A. Comastri;M. Elvis;C. Feruglio;A. Finoguenov;A. Fruscione;R. Gilli;G. Hasinger;A. Koekemoer;J. Kartaltepe;O. Ilbert;C. Impey;E. Floc’h;S. Lilly;V. Mainieri;A. Martínez-Sansigre;H. McCracken;N. Menci;A. Merloni;T. Miyaji;D. Sanders;M. Sargent;E. Schinnerer;N. Scoville;J. Silverman;V. Smolčić;A. Steffen;P. Santini;Y. Taniguchi;D. Thompson;D. Thompson;J. Trump;C. Vignali;M. Urry;Lin Yan