AMI limits on 15-GHz excess emission in northern HII regions

Scaife, A.; Hurley-Walker, Natasha; Davies, M.; Duffett-Smith, P.; Feroz, F.; Grainge, K.; Green, D.; Hobson, M.; Kaneko, T.; Lasenby, A.; Pooley, G.; Saunders, R.; Scott, P.; Titterington, D.; Waldram, E.; Zwart, J.

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Authors

Scaife, A.

Hurley-Walker, Natasha

Davies, M.

Duffett-Smith, P.

Feroz, F.

Grainge, K.

Green, D.

Hobson, M.

Kaneko, T.

Lasenby, A.

Pooley, G.

Saunders, R.

Scott, P.

Titterington, D.

Waldram, E.

Zwart, J.

Date

2008

Type

Journal Article

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Citation

Scaife, A. and Hurley-Walker, N. and Davies, M. and Duffett-Smith, P. and Feroz, F. and Grainge, K. and Green, D. et al. 2008. AMI limits on 15-GHz excess emission in northern HII regions. Monthly Notices of the Royal Astronomical Society. 385: pp. 809-822.

Source Title

Monthly Notices of the Royal Astronomical Society

Abstract

We present observations between 14.2 and 17.9 GHz of 16 Galactic H II regions made withthe Arcminute Microkelvin Imager. In conjunction with data from the literature at lower radiofrequencies we investigate the possibility of a spinning dust component in the spectra of theseobjects. We conclude that there is no signi?cant evidence for spinning dust towards thesesources and measure an average spectral index of a = 0.15 ± 0.07 (where S ? ?-a) between1.4 and 17.9 GHz for the sample.