12CO (3–2) High-Resolution Survey (COHRS) of the Galactic Plane: Complete Data Release

Geumsook 금숙 Park 박; Malcolm J. Currie; Holly S. Thomas; Erik Rosolowsky; Jessica T. Dempsey; Kee-Tae Kim; Andrew J. Rigby; Yang Su; David J. Eden; Dario Colombo; Harriet Parsons; Toby J. T. Moore

doi:10.3847/1538-4365/ac9b59

12CO (3–2) High-Resolution Survey (COHRS) of the Galactic Plane: Complete Data Release

박 Geumsook 금숙 Park, Malcolm J. Currie, Holly S. Thomas, Erik Rosolowsky, Jessica T. Dempsey, Kee-Tae Kim, Andrew J. Rigby, Yang Su, David J. Eden, Dario Colombo, Harriet Parsons, Toby J. T. Moore

Department of Physics

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Abstract

We present the full data release of the 12CO (3–2) High-Resolution Survey (COHRS), which has mapped the inner Galactic plane over the range of 9fdg5 ≤ l ≤ 62fdg3 and ∣b∣ ≤ 0fdg5. COHRS has been carried out using the Heterodyne Array Receiver Program on the 15 m James Clerk Maxwell Telescope in Hawaii. The released data are smoothed to have a spatial resolution of 16farcs6 and a velocity resolution of 0.635 km s−1, achieving a mean rms of ∼0.6 K on
. The COHRS data are useful for investigating detailed three-dimensional structures of individual molecular clouds and large-scale structures such as spiral arms in the Galactic plane. Furthermore, data from other available public surveys of different CO isotopologues and transitions with similar angular resolutions to this survey, such as FUGIN, SEDIGISM, and CHIMPS/CHIMPS2, allow studies of the physical properties of molecular clouds and comparison of their states. In this paper, we report further observations on the second release and improved data reduction since the original COHRS release. We discuss the characteristics of the COHRS data and present integrated-emission images and a position–velocity (PV) map of the region covered. The PV map shows a good match with spiral-arm traces from existing CO and H i surveys. We also obtain and compare integrated one-dimensional distributions of 12CO (1–0) and (3–2) and those of star-forming populations.

Original language	English
Article number	16
Journal	The Astrophysical Journal Supplement Series
Volume	254
Issue number	1
Early online date	29 Dec 2022
DOIs	https://doi.org/10.3847/1538-4365/ac9b59
Publication status	Published - 1 Jan 2023

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박G. 금숙. P., Currie, M. J., Thomas, H. S., Rosolowsky, E., Dempsey, J. T., Kim, K.-T., Rigby, A. J., Su, Y., Eden, D. J., Colombo, D., Parsons, H., & Moore, T. J. T. (2023). 12CO (3–2) High-Resolution Survey (COHRS) of the Galactic Plane: Complete Data Release. The Astrophysical Journal Supplement Series, 254(1), Article 16. https://doi.org/10.3847/1538-4365/ac9b59

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abstract = "We present the full data release of the 12CO (3–2) High-Resolution Survey (COHRS), which has mapped the inner Galactic plane over the range of 9fdg5 ≤ l ≤ 62fdg3 and ∣b∣ ≤ 0fdg5. COHRS has been carried out using the Heterodyne Array Receiver Program on the 15 m James Clerk Maxwell Telescope in Hawaii. The released data are smoothed to have a spatial resolution of 16farcs6 and a velocity resolution of 0.635 km s−1, achieving a mean rms of ∼0.6 K on . The COHRS data are useful for investigating detailed three-dimensional structures of individual molecular clouds and large-scale structures such as spiral arms in the Galactic plane. Furthermore, data from other available public surveys of different CO isotopologues and transitions with similar angular resolutions to this survey, such as FUGIN, SEDIGISM, and CHIMPS/CHIMPS2, allow studies of the physical properties of molecular clouds and comparison of their states. In this paper, we report further observations on the second release and improved data reduction since the original COHRS release. We discuss the characteristics of the COHRS data and present integrated-emission images and a position–velocity (PV) map of the region covered. The PV map shows a good match with spiral-arm traces from existing CO and H i surveys. We also obtain and compare integrated one-dimensional distributions of 12CO (1–0) and (3–2) and those of star-forming populations.",

author = "박, {Geumsook 금숙 Park} and Currie, {Malcolm J.} and Thomas, {Holly S.} and Erik Rosolowsky and Dempsey, {Jessica T.} and Kee-Tae Kim and Rigby, {Andrew J.} and Yang Su and Eden, {David J.} and Dario Colombo and Harriet Parsons and Moore, {Toby J. T.}",

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AU - 박, Geumsook 금숙 Park

AU - Currie, Malcolm J.

AU - Thomas, Holly S.

AU - Rosolowsky, Erik

AU - Dempsey, Jessica T.

AU - Kim, Kee-Tae

AU - Rigby, Andrew J.

AU - Su, Yang

AU - Eden, David J.

AU - Colombo, Dario

AU - Parsons, Harriet

AU - Moore, Toby J. T.

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N2 - We present the full data release of the 12CO (3–2) High-Resolution Survey (COHRS), which has mapped the inner Galactic plane over the range of 9fdg5 ≤ l ≤ 62fdg3 and ∣b∣ ≤ 0fdg5. COHRS has been carried out using the Heterodyne Array Receiver Program on the 15 m James Clerk Maxwell Telescope in Hawaii. The released data are smoothed to have a spatial resolution of 16farcs6 and a velocity resolution of 0.635 km s−1, achieving a mean rms of ∼0.6 K on . The COHRS data are useful for investigating detailed three-dimensional structures of individual molecular clouds and large-scale structures such as spiral arms in the Galactic plane. Furthermore, data from other available public surveys of different CO isotopologues and transitions with similar angular resolutions to this survey, such as FUGIN, SEDIGISM, and CHIMPS/CHIMPS2, allow studies of the physical properties of molecular clouds and comparison of their states. In this paper, we report further observations on the second release and improved data reduction since the original COHRS release. We discuss the characteristics of the COHRS data and present integrated-emission images and a position–velocity (PV) map of the region covered. The PV map shows a good match with spiral-arm traces from existing CO and H i surveys. We also obtain and compare integrated one-dimensional distributions of 12CO (1–0) and (3–2) and those of star-forming populations.

AB - We present the full data release of the 12CO (3–2) High-Resolution Survey (COHRS), which has mapped the inner Galactic plane over the range of 9fdg5 ≤ l ≤ 62fdg3 and ∣b∣ ≤ 0fdg5. COHRS has been carried out using the Heterodyne Array Receiver Program on the 15 m James Clerk Maxwell Telescope in Hawaii. The released data are smoothed to have a spatial resolution of 16farcs6 and a velocity resolution of 0.635 km s−1, achieving a mean rms of ∼0.6 K on . The COHRS data are useful for investigating detailed three-dimensional structures of individual molecular clouds and large-scale structures such as spiral arms in the Galactic plane. Furthermore, data from other available public surveys of different CO isotopologues and transitions with similar angular resolutions to this survey, such as FUGIN, SEDIGISM, and CHIMPS/CHIMPS2, allow studies of the physical properties of molecular clouds and comparison of their states. In this paper, we report further observations on the second release and improved data reduction since the original COHRS release. We discuss the characteristics of the COHRS data and present integrated-emission images and a position–velocity (PV) map of the region covered. The PV map shows a good match with spiral-arm traces from existing CO and H i surveys. We also obtain and compare integrated one-dimensional distributions of 12CO (1–0) and (3–2) and those of star-forming populations.

U2 - 10.3847/1538-4365/ac9b59

DO - 10.3847/1538-4365/ac9b59

M3 - Article

SN - 0067-0049

VL - 254

JO - The Astrophysical Journal Supplement Series

JF - The Astrophysical Journal Supplement Series

IS - 1

M1 - 16

ER -

12CO (3–2) High-Resolution Survey (COHRS) of the Galactic Plane: Complete Data Release

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