Investigating the source of Planck-detected AME: high-resolution observations at 15 GHz
Investigating the source of Planck-detected AME: high-resolution observations at 15 GHz
The Planck 28.5?GHz maps were searched for potential Anomalous Microwave Emission (AME) regions on the scale of ~3° or smaller, and several new regions of interest were selected. Ancillary data at both lower and higher frequencies were used to construct spectral energy distributions (SEDs), which seem to confirm an excess consistent with spinning dust models. Here we present higher resolution observations of two of these new regions with the Arcminute Microkelvin Imager Small Array (AMI SA) between 14 and 18?GHz to test for the presence of a compact (~10 arcmin or smaller) component. For AME-G107.1+5.2, dominated by the Hii region S140, we find evidence for the characteristic rising spectrum associated with either the spinning dust mechanism for AME or an ultra- /hypercompact Hii region across the AMI frequency band; however, for AME-G173.6+208 we find no evidence for AME on scales of ~2–10 arcmin.
[9pp]
Perrott, Yvette C.
bad6ab07-16a4-4d0f-8374-28c01928457b
Scaife, Anna M.M.
327b962f-9003-45ca-a6ea-284346c5cc85
Hurley-Walker, Natasha
033b019b-99fe-4172-a363-d8b162d49780
Grainge, Keith J.B.
e6f6fb2e-81bc-440d-9b37-2abccd484d96
2013
Perrott, Yvette C.
bad6ab07-16a4-4d0f-8374-28c01928457b
Scaife, Anna M.M.
327b962f-9003-45ca-a6ea-284346c5cc85
Hurley-Walker, Natasha
033b019b-99fe-4172-a363-d8b162d49780
Grainge, Keith J.B.
e6f6fb2e-81bc-440d-9b37-2abccd484d96
Perrott, Yvette C., Scaife, Anna M.M., Hurley-Walker, Natasha and Grainge, Keith J.B.
(2013)
Investigating the source of Planck-detected AME: high-resolution observations at 15 GHz.
Advances in Astronomy, 2013, .
(doi:10.1155/2013/354259).
Abstract
The Planck 28.5?GHz maps were searched for potential Anomalous Microwave Emission (AME) regions on the scale of ~3° or smaller, and several new regions of interest were selected. Ancillary data at both lower and higher frequencies were used to construct spectral energy distributions (SEDs), which seem to confirm an excess consistent with spinning dust models. Here we present higher resolution observations of two of these new regions with the Arcminute Microkelvin Imager Small Array (AMI SA) between 14 and 18?GHz to test for the presence of a compact (~10 arcmin or smaller) component. For AME-G107.1+5.2, dominated by the Hii region S140, we find evidence for the characteristic rising spectrum associated with either the spinning dust mechanism for AME or an ultra- /hypercompact Hii region across the AMI frequency band; however, for AME-G173.6+208 we find no evidence for AME on scales of ~2–10 arcmin.
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Published date: 2013
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Copyright © 2013 Yvette C. Perrott et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Physics & Astronomy
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Local EPrints ID: 369258
URI: http://eprints.soton.ac.uk/id/eprint/369258
ISSN: 1687-7969
PURE UUID: 3d39e396-75b2-462b-ae39-29dd2bc0dbc2
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Date deposited: 23 Sep 2014 09:17
Last modified: 14 Mar 2024 18:00
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Author:
Yvette C. Perrott
Author:
Anna M.M. Scaife
Author:
Natasha Hurley-Walker
Author:
Keith J.B. Grainge
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