What Does the Milky Way Look Like?
In spite of much work, the overall spiral structure morphology of the Milky Way remains somewhat uncertain. In the last two decades, accurate distance measurements have provided us with an opportunity to solve this issue. Using the precise locations of very young objects, for the first time, we prop...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/acc45c |
| _version_ | 1797701130524819456 |
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| author | Y. Xu C. J. Hao D. J. Liu Z. H. Lin S. B. Bian L. G. Hou J. J. Li Y. J. Li |
| author_facet | Y. Xu C. J. Hao D. J. Liu Z. H. Lin S. B. Bian L. G. Hou J. J. Li Y. J. Li |
| author_sort | Y. Xu |
| collection | DOAJ |
| description | In spite of much work, the overall spiral structure morphology of the Milky Way remains somewhat uncertain. In the last two decades, accurate distance measurements have provided us with an opportunity to solve this issue. Using the precise locations of very young objects, for the first time, we propose that our galaxy has a multiple-arm morphology that consists of two-arm symmetry (the Perseus and Norma Arms) in the inner parts and that extends to the outer parts, where there are several long, irregular arms (the Centaurus, Sagittarius, Carina, Outer, and Local Arms). |
| first_indexed | 2024-03-12T04:30:51Z |
| format | Article |
| id | doaj.art-82efcea9f7cd4954aa06620eb6fc615d |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T04:30:51Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-82efcea9f7cd4954aa06620eb6fc615d2023-09-03T10:05:25ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0194725410.3847/1538-4357/acc45cWhat Does the Milky Way Look Like?Y. Xu0https://orcid.org/0000-0001-5602-3306C. J. Hao1D. J. Liu2Z. H. Lin3S. B. Bian4https://orcid.org/0000-0002-7508-9615L. G. Hou5J. J. Li6https://orcid.org/0000-0002-3338-8465Y. J. Li7https://orcid.org/0000-0001-7526-0120Purple Mountain Observatory, Chinese Academy of Sciences , Nanjing 210023, People’s Republic of China ; xuye@pmo.ac.cn; School of Astronomy and Space Science, University of Science and Technology of China , Hefei 230026, People’s Republic of ChinaPurple Mountain Observatory, Chinese Academy of Sciences , Nanjing 210023, People’s Republic of China ; xuye@pmo.ac.cn; School of Astronomy and Space Science, University of Science and Technology of China , Hefei 230026, People’s Republic of ChinaPurple Mountain Observatory, Chinese Academy of Sciences , Nanjing 210023, People’s Republic of China ; xuye@pmo.ac.cn; School of Astronomy and Space Science, University of Science and Technology of China , Hefei 230026, People’s Republic of ChinaPurple Mountain Observatory, Chinese Academy of Sciences , Nanjing 210023, People’s Republic of China ; xuye@pmo.ac.cn; School of Astronomy and Space Science, University of Science and Technology of China , Hefei 230026, People’s Republic of ChinaPurple Mountain Observatory, Chinese Academy of Sciences , Nanjing 210023, People’s Republic of China ; xuye@pmo.ac.cn; School of Astronomy and Space Science, University of Science and Technology of China , Hefei 230026, People’s Republic of ChinaNational Astronomical Observatories, Chinese Academy of Sciences , 20A Datun Road, Chaoyang District, Beijing 100101, People’s Republic of ChinaPurple Mountain Observatory, Chinese Academy of Sciences , Nanjing 210023, People’s Republic of China ; xuye@pmo.ac.cn; School of Astronomy and Space Science, University of Science and Technology of China , Hefei 230026, People’s Republic of ChinaPurple Mountain Observatory, Chinese Academy of Sciences , Nanjing 210023, People’s Republic of China ; xuye@pmo.ac.cnIn spite of much work, the overall spiral structure morphology of the Milky Way remains somewhat uncertain. In the last two decades, accurate distance measurements have provided us with an opportunity to solve this issue. Using the precise locations of very young objects, for the first time, we propose that our galaxy has a multiple-arm morphology that consists of two-arm symmetry (the Perseus and Norma Arms) in the inner parts and that extends to the outer parts, where there are several long, irregular arms (the Centaurus, Sagittarius, Carina, Outer, and Local Arms).https://doi.org/10.3847/1538-4357/acc45cGalaxy structureMilky Way GalaxyTrigonometric parallax |
| spellingShingle | Y. Xu C. J. Hao D. J. Liu Z. H. Lin S. B. Bian L. G. Hou J. J. Li Y. J. Li What Does the Milky Way Look Like? The Astrophysical Journal Galaxy structure Milky Way Galaxy Trigonometric parallax |
| title | What Does the Milky Way Look Like? |
| title_full | What Does the Milky Way Look Like? |
| title_fullStr | What Does the Milky Way Look Like? |
| title_full_unstemmed | What Does the Milky Way Look Like? |
| title_short | What Does the Milky Way Look Like? |
| title_sort | what does the milky way look like |
| topic | Galaxy structure Milky Way Galaxy Trigonometric parallax |
| url | https://doi.org/10.3847/1538-4357/acc45c |
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