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A high-resolution radio continuum study of the dwarf irregular galaxy IC 10

A high-resolution radio continuum study of the dwarf irregular galaxy IC 10
A high-resolution radio continuum study of the dwarf irregular galaxy IC 10
We present high-resolution e-Multi-Element Radio Linked Interferometer Network radio continuum maps of the dwarf irregular galaxy IC 10 at 1.5 and 5 GHz. We detect 11 compact sources at 1.5 GHz, five of which have complementary detections at 5 GHz. We classify three extended sources as compact H ii regions within IC 10, five sources as contaminating background galaxies and identify three sources that require additional observations to classify. We do not expect that any of these three sources are supernova remnants as they will likely be resolved out at the assumed distance of IC 10 (0.7 Mpc). We correct integrated flux densities of IC 10 from the literature for contamination by unrelated background sources and obtain updated flux density measurements of 354 ± 11 mJy at 1.5 GHz and 199 ± 9 mJy at 4.85 GHz. The background contamination does not contribute significantly to the overall radio emission from IC 10, so previous analysis concerning its integrated radio properties remains valid.
0035-8711
2113-2126
Westcott, J.
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Brinks, E.
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Beswick, R.J.
c52c991a-7404-4b9c-b651-b919a8d02c04
Heesen, V.
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Argo, M.K.
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Baldi, R.D.
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Fenech, D.M.
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McHardy, I.M.
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Smith, D.J.B.
38524959-3932-4266-8097-0a0219d62031
Williams, D.R.A.
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Westcott, J.
4ac23629-2401-48c0-8c76-03b81a590c95
Brinks, E.
dc3a58aa-c50c-4538-88a1-baf2aa8301d2
Beswick, R.J.
c52c991a-7404-4b9c-b651-b919a8d02c04
Heesen, V.
b8b21826-1b25-493c-9f2a-9b0428dd1713
Argo, M.K.
f4fd7615-6b60-44f4-97aa-993c91e56a9b
Baldi, R.D.
c416ed4c-5d1c-48ee-989c-3a8ab38cd124
Fenech, D.M.
3b633567-2827-4698-a086-d93457039a79
McHardy, I.M.
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Smith, D.J.B.
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Williams, D.R.A.
c9ded967-198f-4c26-96b1-8c03d7d26445

Westcott, J., Brinks, E., Beswick, R.J., Heesen, V., Argo, M.K., Baldi, R.D., Fenech, D.M., McHardy, I.M., Smith, D.J.B. and Williams, D.R.A. (2017) A high-resolution radio continuum study of the dwarf irregular galaxy IC 10. Monthly Notices of the Royal Astronomical Society, 467 (2), 2113-2126. (doi:10.1093/mnras/stx188).

Record type: Article

Abstract

We present high-resolution e-Multi-Element Radio Linked Interferometer Network radio continuum maps of the dwarf irregular galaxy IC 10 at 1.5 and 5 GHz. We detect 11 compact sources at 1.5 GHz, five of which have complementary detections at 5 GHz. We classify three extended sources as compact H ii regions within IC 10, five sources as contaminating background galaxies and identify three sources that require additional observations to classify. We do not expect that any of these three sources are supernova remnants as they will likely be resolved out at the assumed distance of IC 10 (0.7 Mpc). We correct integrated flux densities of IC 10 from the literature for contamination by unrelated background sources and obtain updated flux density measurements of 354 ± 11 mJy at 1.5 GHz and 199 ± 9 mJy at 4.85 GHz. The background contamination does not contribute significantly to the overall radio emission from IC 10, so previous analysis concerning its integrated radio properties remains valid.

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A High-Resolution Radio Continuum study of The Dwarf Irregular Galaxy IC10 - Accepted Manuscript
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Accepted/In Press date: 17 January 2017
e-pub ahead of print date: 22 January 2017
Published date: May 2017
Organisations: Astronomy Group, Physics & Astronomy

Identifiers

Local EPrints ID: 411701
URI: http://eprints.soton.ac.uk/id/eprint/411701
ISSN: 0035-8711
PURE UUID: 2a9ca25c-1d9d-4d89-ae46-803d0e8efdef
ORCID for D.R.A. Williams: ORCID iD orcid.org/0000-0001-7361-0246

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Date deposited: 22 Jun 2017 16:31
Last modified: 16 Dec 2019 18:56

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Contributors

Author: J. Westcott
Author: E. Brinks
Author: R.J. Beswick
Author: V. Heesen
Author: M.K. Argo
Author: R.D. Baldi
Author: D.M. Fenech
Author: I.M. McHardy
Author: D.J.B. Smith
Author: D.R.A. Williams ORCID iD

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