University of Hertfordshire

A High-Resolution Radio Continuum Study Of The Dwarf Irregular Galaxy IC 10

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Original language English 15 Monthly Notices of the Royal Astronomical Society 22 Jan 2017 22 Jan 2017 10.1093/mnras/stx188 E-pub ahead of print - 22 Jan 2017

Abstract

We present high-resolution e-MERLIN radio continuum maps of the Dwarf Irregular galaxy IC10 at 1.5GHz and 5GHz. We detect 11 compact sources at 1.5GHz, 5 of which have complementary detections at 5GHz. We classify 3 extended sources as compact H{\sc ii} regions within IC10, 5 sources as contaminating background galaxies and identify 3 sources which require additional observations to classify. We do not expect that any of these 3 sources are Supernova Remnants as they will likely be resolved out at the assumed distance of IC10 (0.7Mpc). We correct integrated flux densities of IC10 from the literature for contamination by unrelated background sources and obtain updated flux density measurements of $354\pm11$\,mJy at 1.5GHz and $199\pm9$\,mJy at 4.85GHz. The background contamination does not contribute significantly to the overall radio emission from IC10, so previous analysis concerning its integrated radio properties remain valid.

Notes

This is the accepted manuscript version of an article accepted for publication in Monthly Notices of the Royal Astronomical Society. J. Westcott et al, A High-Resolution Radio Continuum Study Of The Dwarf Irregular Galaxy IC 10, MNRAS 000, 1-15 (2016). Preprint 22 January 2017, doi: https://doi.org/10.1093/mnras/stx188 © 2017 The Authors

• Hertfordshire Astronomy 2015-18

Project: Research

ID: 11099670