Optical and Near–infrared Spectroscopy of a High–redshift, Hard X–ray Emitting Spiral Galaxy
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چکیده
We present optical and near–infrared Keck spectroscopy of CXOHDFN J123635.6+621424 (hereafter HDFX28), a hard X–ray source at a redshift of z = 2.011 in the flanking fields of the Hubble Deep Field– North (HDF–N). HDFX28 is a red source (R − Ks = 4.74) with extended steep–spectrum (α 8.4 GHz
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تاریخ انتشار 2003