AGN and starbursts at high redshift: High resolution EVN radio observations of the Hubble Deep Field

Details AGN and starbursts at high redshift: High resolution EVN radio observations of the Hubble Deep Field AGN and starbursts at high redshift: High resolution EVN radio observations of the Hubble Deep Field

2000-12-13

arxiv.org/abs/astro-ph/0012293v1

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure; Accepted by Astron. & Astrophys Letters ... See http://www.nfra.nl/~mag/hdf_evn.html

Scientific paper

We present deep, wide-field European VLBI Network (EVN) 1.6 GHz observations of the Hubble Deep Field (HDF) region with a resolution of 0.025 arcseconds. Above the 210 microJy/beam (5sigma) detection level, the EVN clearly detects two radio sources in a field that encompasses the HDF and part of the Hubble Flanking Fields (HFF). The sources detected are: VLA J123644+621133 (a z=1.013, low-luminosity FR-I radio source located within the HDF itself) and VLA J123642+621331 (a dust enshrouded, optically faint, z=4.424 starburst system). A third radio source, J123646+621404, is detected at the 4sigma level. The VLBI detections of all three sources suggest that most of the radio emission of these particular sources (including the dusty starburst) is generated by an embedded AGN.

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