Nitric oxide and other molecules: molecular modeling and low-frequency exploration using the Murchison Widefield Array

C. D. Tremblay; M. D. Gray; N. Hurley-Walker; J. A. Green; J. R. Dawson; J. M. Dickey; P. A. Jones; S. J. Tingay; O. I. Wong

doi:10.3847/1538-4357/abc33a

Nitric oxide and other molecules: molecular modeling and low-frequency exploration using the Murchison Widefield Array

C. D. Tremblay^*, M. D. Gray, N. Hurley-Walker, J. A. Green, J. R. Dawson, J. M. Dickey, P. A. Jones, S. J. Tingay, O. I. Wong

^*Corresponding author for this work

Centre in Astronomy, Astrophysics & Astrophotonics

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Abstract

We present new molecular modeling for ¹⁴NO and ¹⁵NO and a deep, blind molecular line survey at low radio frequencies (99-129 MHz). This survey is the third in a series completed with the Murchison Widefield Array (MWA), but in comparison with the previous surveys, uses 4 times more data (17 hr versus 4 hr) and is 3 times better in angular resolution (1′ versus 3′). The new molecular modeling for nitric oxide and its main isotopologue has seven transitions within the MWA frequency band (although we also present the higher-frequency transitions). Although we did not detect any new molecular lines at a limit of 0.21 Jy beam^-1, this work is an important step in understanding the data processing challenges for the future Square Kilometre Array and places solid limits on what is expected in the future of low-frequency surveys. The modeling can be utilized for future searches of nitric oxide.

Original language	English
Article number	65
Pages (from-to)	1-8
Number of pages	8
Journal	Astrophysical Journal
Volume	905
Issue number	1
DOIs	https://doi.org/10.3847/1538-4357/abc33a
Publication status	Published - 10 Dec 2020

Bibliographical note

Copyright 2020 The American Astronomical Society. First published in the Astrophysical Journal, 905(1), 65, 2020, published by IOP Publishing. The original publication is available at https://doi.org/10.3847/1538-4357/abc33a. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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title = "Nitric oxide and other molecules: molecular modeling and low-frequency exploration using the Murchison Widefield Array",

abstract = "We present new molecular modeling for 14NO and 15NO and a deep, blind molecular line survey at low radio frequencies (99-129 MHz). This survey is the third in a series completed with the Murchison Widefield Array (MWA), but in comparison with the previous surveys, uses 4 times more data (17 hr versus 4 hr) and is 3 times better in angular resolution (1′ versus 3′). The new molecular modeling for nitric oxide and its main isotopologue has seven transitions within the MWA frequency band (although we also present the higher-frequency transitions). Although we did not detect any new molecular lines at a limit of 0.21 Jy beam-1, this work is an important step in understanding the data processing challenges for the future Square Kilometre Array and places solid limits on what is expected in the future of low-frequency surveys. The modeling can be utilized for future searches of nitric oxide. ",

author = "Tremblay, {C. D.} and Gray, {M. D.} and N. Hurley-Walker and Green, {J. A.} and Dawson, {J. R.} and Dickey, {J. M.} and Jones, {P. A.} and Tingay, {S. J.} and Wong, {O. I.}",

note = "Copyright 2020 The American Astronomical Society. First published in the Astrophysical Journal, 905(1), 65, 2020, published by IOP Publishing. The original publication is available at https://doi.org/10.3847/1538-4357/abc33a. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

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doi = "10.3847/1538-4357/abc33a",

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Nitric oxide and other molecules : molecular modeling and low-frequency exploration using the Murchison Widefield Array. / Tremblay, C. D.; Gray, M. D.; Hurley-Walker, N.; Green, J. A.; Dawson, J. R.; Dickey, J. M.; Jones, P. A.; Tingay, S. J.; Wong, O. I.

In: Astrophysical Journal, Vol. 905, No. 1, 65, 10.12.2020, p. 1-8.

Research output: Contribution to journal › Article › peer-review

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T2 - molecular modeling and low-frequency exploration using the Murchison Widefield Array

AU - Tremblay, C. D.

AU - Gray, M. D.

AU - Hurley-Walker, N.

AU - Green, J. A.

AU - Dawson, J. R.

AU - Dickey, J. M.

AU - Jones, P. A.

AU - Tingay, S. J.

AU - Wong, O. I.

N1 - Copyright 2020 The American Astronomical Society. First published in the Astrophysical Journal, 905(1), 65, 2020, published by IOP Publishing. The original publication is available at https://doi.org/10.3847/1538-4357/abc33a. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2020/12/10

Y1 - 2020/12/10

N2 - We present new molecular modeling for 14NO and 15NO and a deep, blind molecular line survey at low radio frequencies (99-129 MHz). This survey is the third in a series completed with the Murchison Widefield Array (MWA), but in comparison with the previous surveys, uses 4 times more data (17 hr versus 4 hr) and is 3 times better in angular resolution (1′ versus 3′). The new molecular modeling for nitric oxide and its main isotopologue has seven transitions within the MWA frequency band (although we also present the higher-frequency transitions). Although we did not detect any new molecular lines at a limit of 0.21 Jy beam-1, this work is an important step in understanding the data processing challenges for the future Square Kilometre Array and places solid limits on what is expected in the future of low-frequency surveys. The modeling can be utilized for future searches of nitric oxide.

AB - We present new molecular modeling for 14NO and 15NO and a deep, blind molecular line survey at low radio frequencies (99-129 MHz). This survey is the third in a series completed with the Murchison Widefield Array (MWA), but in comparison with the previous surveys, uses 4 times more data (17 hr versus 4 hr) and is 3 times better in angular resolution (1′ versus 3′). The new molecular modeling for nitric oxide and its main isotopologue has seven transitions within the MWA frequency band (although we also present the higher-frequency transitions). Although we did not detect any new molecular lines at a limit of 0.21 Jy beam-1, this work is an important step in understanding the data processing challenges for the future Square Kilometre Array and places solid limits on what is expected in the future of low-frequency surveys. The modeling can be utilized for future searches of nitric oxide.

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Nitric oxide and other molecules: molecular modeling and low-frequency exploration using the Murchison Widefield Array

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