Rotational Spectrum and First Interstellar Detection of 2-methoxyethanol Using ALMA Observations of NGC 6334I

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

Standard

Rotational Spectrum and First Interstellar Detection of 2-methoxyethanol Using ALMA Observations of NGC 6334I. / Fried, Zachary T. P.; El-Abd, Samer J.; Hays, Brian M.; Wenzel, Gabi; Byrne, Alex N.; Margulès, Laurent; Motiyenko, Roman A.; Shipman, Steven T.; Horne, Maria P.; Jørgensen, Jes K.; Brogan, Crystal L.; Hunter, Todd R.; Remijan, Anthony J.; Lipnicky, Andrew; Loomis, Ryan A.; McGuire, Brett A.

In: Astrophysics Journal Letters, Vol. 965, No. 2, L23, 2024.

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

Harvard

Fried, ZTP, El-Abd, SJ, Hays, BM, Wenzel, G, Byrne, AN, Margulès, L, Motiyenko, RA, Shipman, ST, Horne, MP, Jørgensen, JK, Brogan, CL, Hunter, TR, Remijan, AJ, Lipnicky, A, Loomis, RA & McGuire, BA 2024, 'Rotational Spectrum and First Interstellar Detection of 2-methoxyethanol Using ALMA Observations of NGC 6334I', Astrophysics Journal Letters, vol. 965, no. 2, L23. https://doi.org/10.3847/2041-8213/ad37ff

APA

Fried, Z. T. P., El-Abd, S. J., Hays, B. M., Wenzel, G., Byrne, A. N., Margulès, L., Motiyenko, R. A., Shipman, S. T., Horne, M. P., Jørgensen, J. K., Brogan, C. L., Hunter, T. R., Remijan, A. J., Lipnicky, A., Loomis, R. A., & McGuire, B. A. (2024). Rotational Spectrum and First Interstellar Detection of 2-methoxyethanol Using ALMA Observations of NGC 6334I. Astrophysics Journal Letters, 965(2), [L23]. https://doi.org/10.3847/2041-8213/ad37ff

Vancouver

Fried ZTP, El-Abd SJ, Hays BM, Wenzel G, Byrne AN, Margulès L et al. Rotational Spectrum and First Interstellar Detection of 2-methoxyethanol Using ALMA Observations of NGC 6334I. Astrophysics Journal Letters. 2024;965(2). L23. https://doi.org/10.3847/2041-8213/ad37ff

Author

Fried, Zachary T. P. ; El-Abd, Samer J. ; Hays, Brian M. ; Wenzel, Gabi ; Byrne, Alex N. ; Margulès, Laurent ; Motiyenko, Roman A. ; Shipman, Steven T. ; Horne, Maria P. ; Jørgensen, Jes K. ; Brogan, Crystal L. ; Hunter, Todd R. ; Remijan, Anthony J. ; Lipnicky, Andrew ; Loomis, Ryan A. ; McGuire, Brett A. / Rotational Spectrum and First Interstellar Detection of 2-methoxyethanol Using ALMA Observations of NGC 6334I. In: Astrophysics Journal Letters. 2024 ; Vol. 965, No. 2.

Bibtex

@article{943446612b6e4708972291d2800a6032,
title = "Rotational Spectrum and First Interstellar Detection of 2-methoxyethanol Using ALMA Observations of NGC 6334I",
abstract = "We use both chirped-pulse Fourier transform and frequency-modulated absorption spectroscopy to study the rotational spectrum of 2-methoxyethanol (CH3OCH2CH2OH) in several frequency regions ranging from 8.7 to 500 GHz. The resulting rotational parameters permitted a search for this molecule in Atacama Large Millimeter/submillimeter Array (ALMA) observations toward the massive protocluster NGC 6334I, as well as source B of the low-mass protostellar system IRAS 16293−2422. A total of 25 rotational transitions are observed in the ALMA Band 4 data toward NGC 6334I, resulting in the first interstellar detection of 2-methoxyethanol. A column density of cm−2 is derived at an excitation temperature of K. However, molecular signal is not observed in the Band 7 data toward IRAS 16293−2422B, and an upper-limit column density of 2.5 × 1015 cm−2 is determined. Various possible formation pathways—including radical recombination and insertion reactions—are discussed. We also investigate physical differences between the two interstellar sources that could result in the observed abundance variations.",
author = "Fried, {Zachary T. P.} and El-Abd, {Samer J.} and Hays, {Brian M.} and Gabi Wenzel and Byrne, {Alex N.} and Laurent Margul{\`e}s and Motiyenko, {Roman A.} and Shipman, {Steven T.} and Horne, {Maria P.} and J{\o}rgensen, {Jes K.} and Brogan, {Crystal L.} and Hunter, {Todd R.} and Remijan, {Anthony J.} and Andrew Lipnicky and Loomis, {Ryan A.} and McGuire, {Brett A.}",
year = "2024",
doi = "10.3847/2041-8213/ad37ff",
language = "English",
volume = "965",
journal = "The Astrophysical Journal Letters",
issn = "2041-8205",
publisher = "IOP Publishing",
number = "2",

}

RIS

TY - JOUR

T1 - Rotational Spectrum and First Interstellar Detection of 2-methoxyethanol Using ALMA Observations of NGC 6334I

AU - Fried, Zachary T. P.

AU - El-Abd, Samer J.

AU - Hays, Brian M.

AU - Wenzel, Gabi

AU - Byrne, Alex N.

AU - Margulès, Laurent

AU - Motiyenko, Roman A.

AU - Shipman, Steven T.

AU - Horne, Maria P.

AU - Jørgensen, Jes K.

AU - Brogan, Crystal L.

AU - Hunter, Todd R.

AU - Remijan, Anthony J.

AU - Lipnicky, Andrew

AU - Loomis, Ryan A.

AU - McGuire, Brett A.

PY - 2024

Y1 - 2024

N2 - We use both chirped-pulse Fourier transform and frequency-modulated absorption spectroscopy to study the rotational spectrum of 2-methoxyethanol (CH3OCH2CH2OH) in several frequency regions ranging from 8.7 to 500 GHz. The resulting rotational parameters permitted a search for this molecule in Atacama Large Millimeter/submillimeter Array (ALMA) observations toward the massive protocluster NGC 6334I, as well as source B of the low-mass protostellar system IRAS 16293−2422. A total of 25 rotational transitions are observed in the ALMA Band 4 data toward NGC 6334I, resulting in the first interstellar detection of 2-methoxyethanol. A column density of cm−2 is derived at an excitation temperature of K. However, molecular signal is not observed in the Band 7 data toward IRAS 16293−2422B, and an upper-limit column density of 2.5 × 1015 cm−2 is determined. Various possible formation pathways—including radical recombination and insertion reactions—are discussed. We also investigate physical differences between the two interstellar sources that could result in the observed abundance variations.

AB - We use both chirped-pulse Fourier transform and frequency-modulated absorption spectroscopy to study the rotational spectrum of 2-methoxyethanol (CH3OCH2CH2OH) in several frequency regions ranging from 8.7 to 500 GHz. The resulting rotational parameters permitted a search for this molecule in Atacama Large Millimeter/submillimeter Array (ALMA) observations toward the massive protocluster NGC 6334I, as well as source B of the low-mass protostellar system IRAS 16293−2422. A total of 25 rotational transitions are observed in the ALMA Band 4 data toward NGC 6334I, resulting in the first interstellar detection of 2-methoxyethanol. A column density of cm−2 is derived at an excitation temperature of K. However, molecular signal is not observed in the Band 7 data toward IRAS 16293−2422B, and an upper-limit column density of 2.5 × 1015 cm−2 is determined. Various possible formation pathways—including radical recombination and insertion reactions—are discussed. We also investigate physical differences between the two interstellar sources that could result in the observed abundance variations.

U2 - 10.3847/2041-8213/ad37ff

DO - 10.3847/2041-8213/ad37ff

M3 - Letter

VL - 965

JO - The Astrophysical Journal Letters

JF - The Astrophysical Journal Letters

SN - 2041-8205

IS - 2

M1 - L23

ER -

ID: 389661813