A Deep 150 MHz GMRT Survey in Eridanus

Details A Deep 150 MHz GMRT Survey in Eridanus A Deep 150 MHz GMRT Survey in Eridanus

2008-09-24

arxiv.org/abs/0809.4117v1

Astronomy and Astrophysics

Astrophysics

12 pages, 11 figures, 3 tables, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2008.13773.x

We present results of a 150 MHz survey of a field centered on Epsilon Eridani, undertaken with the Giant Metrewave Radio Telescope (GMRT). The survey covers an area with a diameter of 2 deg, has a spatial resolution of 30" and a noise level of 3.1 mJy at the pointing centre. These observations provide a deeper and higher resolution view of the 150 MHz radio sky than the 7C survey (although the 7C survey covers a much larger area). A total of 113 sources were detected, most are point-like, but 20 are extended. We present an analysis of these sources, in conjunction with the NVSS (at 1.4 GHz) and VLSS (at 74 MHz). This process allowed us to identify 5 Ultra Steep Spectrum (USS) radio sources that are candidate high redshift radio galaxies (HzRGs). In addition, we have derived the dN/dS distribution for these observations and compare our results with other low frequency radio surveys.

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