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ALMA observations of the environments of G301.1364-00.2249A

Published online by Cambridge University Press:  07 February 2024

Zh. Assembay ,
T. Komesh Open the ORCID record for T. Komesh [Opens in a new window] ,
G. Garay ,
A. Omar ,
J. Esimbek ,
N. Alimgazinova ,
M. Kyzgarina  and
Sh. Murat
Zh. Assembay
Affiliation:
IETP, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan.
T. Komesh*
Affiliation:
IETP, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan. Energetic Cosmos Laboratory, Nazarbayev University, Astana 010000, Kazakhstan
G. Garay
Affiliation:
Departamento de Astronomia, Universidad de Chile, Camino el Observatorio 1515, Las Condes, Santiago, Chile
A. Omar
Affiliation:
IETP, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan.
J. Esimbek
Affiliation:
Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, PR China
N. Alimgazinova
Affiliation:
IETP, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan.
M. Kyzgarina
Affiliation:
IETP, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan.
Sh. Murat
Affiliation:
General Secondary School No.137, Shymkent 160024, Kazakhstan
*
[email protected]
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Abstract

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Context: Theoretical scenarios describe the phenomenon of mass accumulation by high-mass young stellar objects (HMYSOs) through disk accretion. Aims: To find out whether the rotation of the core around hyper-compact (HC) HII regions is common Methods: The molecular core G301.1364-00.2249A was selected as the subject of investigation. Observations were carried out on CH3CN, SO2, H29α radio recombination line and continuum emission. Analysis involved the “Moment 0, 1, 2" and “Population-diagram” methods. Result: The structures of G301.1364-00.2249A exhibited clear definition. CH3CN moment 0 images revealed multiple enhanced emission regions and an absorption area. The moment 1 image depicted a velocity gradient from southeast to northwest. Conclusion: The molecular gas has a rotational motion in the direction from the southeast to northwest. The rotational temperature was measured at 293 K.

Keywords

ISM: individual objects: G301.14ABISM: moleculesISM: cloudsISM: coresstars: formationstars: massiveISM: kinematics and dynamics
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S380: Cosmic Masers: Proper Motion toward the Next-Generation Large Projects , December 2022 , pp. 204 - 206
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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