A Multitransition Methanol Survey toward a Large Sample of High-mass Star-forming Regions
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
A Multitransition Methanol Survey toward a Large Sample of High-mass Star-forming Regions
|
|
| Автор |
Zhao, J. Y.
Zhang, J. S. Wang, Y. X. Qiu, J. J. Yan, Y. T. Yu, H. Z. Chen, J. L. Zou, Y. P. |
|
| Тематика |
ADSORPTION
CHAINS CHEMICAL STABILITY ELECTRONIC STRUCTURE LASER ABLATION METAL NANOPARTICLES NANOPARTICLES OXIDATION CARBON-OXYGEN BONDS OXIDATIVE SPECIES PHYSICAL ADSORPTION PULSE LASER ABLATION SILVER NANOPARTICLES SPECTROSCOPY MEASUREMENTS THEORETICAL MODELING X-RAY PHOTOELECTRONS SILVER |
|
| Описание |
We carried out a spectral line survey of CH3OH toward a large sample of 175 high-mass star-forming regions in the 3 mm, 2 mm, and 1.3 mm bands with the Institut de Radioastronomie Millimétrique (IRAM) 30 m telescope. Out of our 175 targets, 148 sources were detected with one or more CH3OH transition lines. Nineteen CH3OH transition lines, including 13 thermal lines and 6 maser lines, were detected. The 80 → 71 A+ (∼95.169 GHz) CH3OH maser line, one of the strongest class I CH3OH maser lines, was detected in 52 sources. Forty-two of them are previously reported masers and the other 10 are new detections. Through analyzing the rotational diagram of the detected CH3OH emission lines (nonmasing lines), we obtained the rotational temperature and the column density for 111 sources. Our results show that E-type CH3OH tends to have lower column density than A-type CH3OH. The column density ratio of E/A was derived in 55 sources with the majority having a ratio less than 1.0 (about 70%), with a peak ratio of ∼0.6. This is consistent with theoretical predictions, i.e., overabundance of A-type CH3OH at low temperature leading to a low E/A ratio. Furthermore, we found that CH3OH abundance decreases beyond T dust ∼ 30 K, which is supported by modeling results. All these support the fact that CH3OH is easily formed at low-temperature environments, via successive hydrogenation of CO on cold dust surfaces. © 2023. The Author(s). Published by the American Astronomical Society.
International Max Planck Research School for Environmental, Cellular and Molecular Microbiology, IMPRS-Mic; National Natural Science Foundation of China, NSFC: 11590782, 11973099, 12003080, 12041302; Sun Yat-sen University, SYSU: 22qntd3101, CMS-CSST-2021-A09, CMS-CSST-2021-A10; Max-Planck-Gesellschaft, MPG; China Scholarship Council, CSC; Institut national des sciences de l'Univers, INSU,CNRS; Centre National de la Recherche Scientifique, CNRS; National Key Research and Development Program of China, NKRDPC: 2022YFA1603102; Fundamental Research Funds for the Central Universities; Basic and Applied Basic Research Foundation of Guangdong Province: 2019A1515110588 This work is supported by the National Key R&D Program of China (2022YFA1603102) and the Natural Science Foundation of China (NSFC; Nos. 12041302 and 11590782). We thank the operators and staff at the IRAM 30 m telescope for their assistance during our observations. J.J.Q. acknowledges support from the NSFC (Nos. 11973099 and 12003080), the Guangdong Basic and Applied Basic Research Foundation (No. 2019A1515110588), the Fundamental Research Funds for the Central Universities (Sun Yat-sen University, No. 22qntd3101), and science research grants from the China Manned Space Project with Nos. CMS-CSST-2021-A09 and CMS-CSST-2021-A10. Y.T.Y. is a member of the International Max Planck Research School (IMPRS) for Astronomy and Astrophysics at the Universities of Bonn and Cologne. Y.T.Y. and H.Z.Y. would like to thank the China Scholarship Council for its support. IRAM is supported by Institut National des Sciences de l’Univers/Centre National de la Recherche Scientifique (INSU/CNRS, France), Max-Planck-Gesellschaft (Germany), and Instituto Geográfico Nacional (Spain). |
|
| Дата |
2024-04-05T16:25:48Z
2024-04-05T16:25:48Z 2023 |
|
| Тип |
Article
Journal article (info:eu-repo/semantics/article) |info:eu-repo/semantics/publishedVersion |
|
| Идентификатор |
Zhao, JY, Zhang, JS, Wang, YX, Qiu, JJ, Yan, YT, Yu, HZ, Chen, JL & Zou, YP 2023, 'A Multitransition Methanol Survey toward a Large Sample of High-mass Star-forming Regions', Astrophysical Journal, Supplement Series, Том. 266, № 2, 29. https://doi.org/10.3847/1538-4365/acc323
Zhao, J. Y., Zhang, J. S., Wang, Y. X., Qiu, J. J., Yan, Y. T., Yu, H. Z., Chen, J. L., & Zou, Y. P. (2023). A Multitransition Methanol Survey toward a Large Sample of High-mass Star-forming Regions. Astrophysical Journal, Supplement Series, 266(2), [29]. https://doi.org/10.3847/1538-4365/acc323 0067-0049 Final All Open Access, Gold https://www.scopus.com/inward/record.uri?eid=2-s2.0-85161692897&doi=10.3847%2f1538-4365%2facc323&partnerID=40&md5=76a86cb6681cfdd5451c57ef63b38805 https://iopscience.iop.org/article/10.3847/1538-4365/acc323/pdf http://elar.urfu.ru/handle/10995/130556 10.3847/1538-4365/acc323 85161692897 000999924100001 |
|
| Язык |
en
|
|
| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
|
| Формат |
application/pdf
|
|
| Издатель |
American Astronomical Society
|
|
| Источник |
The Astrophysical Journal Supplement Series
Astrophysical Journal, Supplement Series |
|