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

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 $354\pm 11$\,mJy at 1.5GHz and $199\pm 9$\,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.

arXiv comment15 pages, 7 Figures, 5 Tables, Accepted for publication in MNRAS

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Cited by in corpus (10)

• LeMMINGs. I. The eMERLIN legacy survey of nearby galaxies. 1.5-GHz parsec-scale radio structures and cores
• Radio jets in NGC 4151: where eMERLIN meets HST
• LeMMINGs. II. The e-MERLIN legacy survey of nearby galaxies. The deepest radio view of the Palomar sample on parsec scale
• Exploring the making of a galactic wind in the star-bursting dwarf irregular galaxy IC 10 with LOFAR
• The nuclear activity and central structure of the elliptical galaxy NGC 5322
• The curious activity in the nucleus of NGC 4151: jet interaction causing variability?
• The Karl G. Jansky Very Large Array Local Group L-band Survey (LGLBS)
• Unveiling the 100 pc scale nuclear radio structure of NGC 6217 with e-MERLIN and the VLA
• The LeMMINGs survey: probing sub-kpc radio structures of nearby galaxies with e-MERLIN
• Electron density distribution in HII regions in IC10