Are the hosts of VLBI-selected radio-AGN different to those of radio-loud AGN?

Are the hosts of VLBI-selected radio-AGN different to those of radio-loud AGN?
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VLBI 选择的无线电 AGN 的宿主与无线电强 AGN 的宿主是否不同?

DOI:
10.1093/mnrasl/slw016
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发表时间:
--
影响因子:
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通讯作者:
Middelberg
Middelberg
中科院分区:
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作者:
Norris;Spitler;Herrera-Ruiz;Middelberg

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最近的研究发现,射电响度选择的射电活动星系核与具有相似恒星质量和红移的非活动星系核相比,其宿主星系的性质几乎没有差异。利用宇宙演化巡天新的1.4 GHz甚长基线干涉测量(VLBI)观测,我们发现大约49% ± 8%的高质量(M> 1010.5M)、高光度(L1.4> 1024W Hz−1)射电活动星系核拥有VLBI探测到的对应物。这些天体对特定的恒星质量、红移或宿主性质没有明显的偏向,而只是一般的射电活动星系核总体所显示的。VLBI观测中发现的射电活动星系核并不特殊,但却是射电活动星系核中具有代表性的样本。
Recent studies have found that radio-AGN selected by radio-loudness show little difference in terms of their host galaxy properties when compared to non-AGN galaxies of similar stellar mass and redshift. Using new 1.4 GHz very long baseline interferometry (VLBI) observations of the Cosmological Evolution Survey field, we find that approximately 49 ± 8 per cent of high-mass (M> 1010.5M⊙), high-luminosity (L1.4> 1024W Hz−1) radio-AGN possess a VLBI-detected counterpart. These objects show no discernible bias towards specific stellar masses, redshifts or host properties other than what is shown by the radio-AGN population in general. Radio-AGN that are detected in VLBI observations are not special, but form a representative sample of the radio-loud AGN population.
哈勃深场北区 (HDF-N) 和侧翼场 (HFF) 的深部、宽视场、全球 VLBI 观测
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发表时间: 2013
影响因子: 6.5
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