Low-Frequency Carbon Recombination Lines in the Orion Molecular Cloud Complex

Tremblay, C.; Jordan, Christopher; Cunningham, M.; Jones, P.; Hurley-Walker, Natasha

doi:10.1017/pasa.2018.13

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Access Status

Open access

Authors

Tremblay, C.

Jordan, Christopher

Cunningham, M.

Jones, P.

Hurley-Walker, Natasha

Date

2018

Type

Journal Article

Metadata

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Citation

Tremblay, C. and Jordan, C. and Cunningham, M. and Jones, P. and Hurley-Walker, N. 2018. Low-Frequency Carbon Recombination Lines in the Orion Molecular Cloud Complex. Publications of the Astronomical Society of Australia. 35: Article ID e018.

Source Title

Publications of the Astronomical Society of Australia

DOI

10.1017/pasa.2018.13

ISSN

1323-3580

School

Curtin Institute of Radio Astronomy (Physics)

Remarks

URI

http://hdl.handle.net/20.500.11937/67160

Collection

Curtin Research Publications

Abstract

We detail tentative detections of low-frequency carbon radio recombination lines from within the Orion molecular cloud complex observed at 99–129 MHz. These tentative detections include one alpha transition and one beta transition over three locations and are located within the diffuse regions of dust observed in the infrared at 100 µm, the Ha emission detected in the optical, and the synchrotron radiation observed in the radio. With these observations, we are able to study the radiation mechanism transition from collisionally pumped to radiatively pumped within the H ii regions within the Orion molecular cloud complex.