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

Jonathan Westcott; Elias Brinks; R. J. Beswick; V. Heesen; M. K. Argo; R. D. Baldi; D. M. Fenech; I. M. McHardy; Daniel Smith; D. R. A. Williams

doi:10.1093/mnras/stx188

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

Jonathan Westcott, Elias Brinks, R. J. Beswick, V. Heesen, M. K. Argo, R. D. Baldi, D. M. Fenech, I. M. McHardy, Daniel Smith, D. R. A. Williams

Centre for Astrophysics Research (CAR)

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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.

Original language	English
Number of pages	15
Journal	Monthly Notices of the Royal Astronomical Society
Early online date	22 Jan 2017
DOIs	https://doi.org/10.1093/mnras/stx188
Publication status	E-pub ahead of print - 22 Jan 2017

Keywords

astro-ph.GA
galaxies: dwarf
galaxies: ISM
ISM: supernova remnants
ISM: HII regions
techniques: high angular resolution
techniques: interferometric

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10.1093/mnras/stx188

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https://arxiv.org/pdf/1701.06571v1.pdf

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@article{485819df453449fdbedbaca311c03c3e,

title = "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 $354\pm11$\,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.",

keywords = "astro-ph.GA, galaxies: dwarf, galaxies: ISM, ISM: supernova remnants, ISM: HII regions, techniques: high angular resolution, techniques: interferometric",

author = "Jonathan Westcott and Elias Brinks and Beswick, {R. J.} and V. Heesen and Argo, {M. K.} and Baldi, {R. D.} and Fenech, {D. M.} and McHardy, {I. M.} and Daniel Smith and Williams, {D. R. A.}",

note = "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 {\textcopyright} 2017 The Authors ",

year = "2017",

month = jan,

day = "22",

doi = "10.1093/mnras/stx188",

language = "English",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "1365-2966",

publisher = "Oxford University Press (OUP)",

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TY - JOUR

T1 - A High-Resolution Radio Continuum Study Of The Dwarf Irregular Galaxy IC 10

AU - Westcott, Jonathan

AU - Brinks, Elias

AU - Beswick, R. J.

AU - Heesen, V.

AU - Argo, M. K.

AU - Baldi, R. D.

AU - Fenech, D. M.

AU - McHardy, I. M.

AU - Smith, Daniel

AU - Williams, D. R. A.

N1 - 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

PY - 2017/1/22

Y1 - 2017/1/22

N2 - 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.

AB - 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.

KW - astro-ph.GA

KW - galaxies: dwarf

KW - galaxies: ISM

KW - ISM: supernova remnants

KW - ISM: HII regions

KW - techniques: high angular resolution

KW - techniques: interferometric

U2 - 10.1093/mnras/stx188

DO - 10.1093/mnras/stx188

M3 - Article

SN - 1365-2966

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

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

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