Blind Search of the Solar Neighborhood Galactic Disk within 5 kpc: 1179 New Star Clusters Found in Gaia DR3
Studying open clusters (OCs) may help to provide a comprehensive understanding of the structure and evolution of the Milky Way. Many previous studies have systematically searched for OCs near the solar system within 1.2 kpc or 20° of Galactic latitude. However, few studies have searched for OCs at h...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2023-01-01
|
| Series: | The Astrophysical Journal Supplement Series |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4365/accb50 |
| _version_ | 1797694508464340992 |
|---|---|
| author | Huanbin Chi Feng Wang Wenting Wang Hui Deng Zhongmu Li |
| author_facet | Huanbin Chi Feng Wang Wenting Wang Hui Deng Zhongmu Li |
| author_sort | Huanbin Chi |
| collection | DOAJ |
| description | Studying open clusters (OCs) may help to provide a comprehensive understanding of the structure and evolution of the Milky Way. Many previous studies have systematically searched for OCs near the solar system within 1.2 kpc or 20° of Galactic latitude. However, few studies have searched for OCs at higher Galactic latitudes and deeper distances. In this study, based on a hybrid unsupervised clustering algorithm (friends-of-friends and pyUPMASK) and a binary classification algorithm (random forest), we extended the search region (i.e., Galactic latitude $\left|b\right|\geqslant 20^\circ )$ and performed a fine-grained blind search for Galactic clusters in Gaia DR3. After crossmatching, the newly discovered cluster candidates are fitted using isochrone fitting to estimate the main physical parameters (i.e., age and metallicity) of these clusters. These cluster candidates were then checked using manual visual inspection. Their statistical properties were also compared with previously exposed cluster catalogs. We found 1179 new clusters with considerable confidence within 5 kpc. |
| first_indexed | 2024-03-12T02:58:57Z |
| format | Article |
| id | doaj.art-3e425bb2178d4ea489f1a83835d9aad6 |
| institution | Directory Open Access Journal |
| issn | 0067-0049 |
| language | English |
| last_indexed | 2024-03-12T02:58:57Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Supplement Series |
| spelling | doaj.art-3e425bb2178d4ea489f1a83835d9aad62023-09-03T15:04:37ZengIOP PublishingThe Astrophysical Journal Supplement Series0067-00492023-01-0126623610.3847/1538-4365/accb50Blind Search of the Solar Neighborhood Galactic Disk within 5 kpc: 1179 New Star Clusters Found in Gaia DR3Huanbin Chi0https://orcid.org/0000-0001-7343-7332Feng Wang1https://orcid.org/0000-0002-9847-7805Wenting Wang2https://orcid.org/0000-0002-4894-7418Hui Deng3https://orcid.org/0000-0002-8765-3906Zhongmu Li4https://orcid.org/0000-0002-0240-6130Center for Astrophysics and Great Bay Center of National Astronomical Data Center, Guangzhou University , Guangzhou 510006, People's Republic of China ; fengwang@gzhu.edu.cn, denghui@gzhu.edu.cn; School of Management and Economics, Kunming University of Science and Technology , Kunming 650500, People's Republic of China; Peng Cheng Laboratory , Shenzhen, 518000, People's Republic of ChinaCenter for Astrophysics and Great Bay Center of National Astronomical Data Center, Guangzhou University , Guangzhou 510006, People's Republic of China ; fengwang@gzhu.edu.cn, denghui@gzhu.edu.cn; Peng Cheng Laboratory , Shenzhen, 518000, People's Republic of ChinaSchool of Physics and Astronomy, Sun Yat-sen University Zhuhai Campus , Zhuhai 519082, People's Republic of ChinaCenter for Astrophysics and Great Bay Center of National Astronomical Data Center, Guangzhou University , Guangzhou 510006, People's Republic of China ; fengwang@gzhu.edu.cn, denghui@gzhu.edu.cn; Peng Cheng Laboratory , Shenzhen, 518000, People's Republic of ChinaInstitute of Astronomy, Dali University , Dali, 671003, People's Republic of China ; zhongmuli@126.comStudying open clusters (OCs) may help to provide a comprehensive understanding of the structure and evolution of the Milky Way. Many previous studies have systematically searched for OCs near the solar system within 1.2 kpc or 20° of Galactic latitude. However, few studies have searched for OCs at higher Galactic latitudes and deeper distances. In this study, based on a hybrid unsupervised clustering algorithm (friends-of-friends and pyUPMASK) and a binary classification algorithm (random forest), we extended the search region (i.e., Galactic latitude $\left|b\right|\geqslant 20^\circ )$ and performed a fine-grained blind search for Galactic clusters in Gaia DR3. After crossmatching, the newly discovered cluster candidates are fitted using isochrone fitting to estimate the main physical parameters (i.e., age and metallicity) of these clusters. These cluster candidates were then checked using manual visual inspection. Their statistical properties were also compared with previously exposed cluster catalogs. We found 1179 new clusters with considerable confidence within 5 kpc.https://doi.org/10.3847/1538-4365/accb50Open star clustersStar clusters |
| spellingShingle | Huanbin Chi Feng Wang Wenting Wang Hui Deng Zhongmu Li Blind Search of the Solar Neighborhood Galactic Disk within 5 kpc: 1179 New Star Clusters Found in Gaia DR3 The Astrophysical Journal Supplement Series Open star clusters Star clusters |
| title | Blind Search of the Solar Neighborhood Galactic Disk within 5 kpc: 1179 New Star Clusters Found in Gaia DR3 |
| title_full | Blind Search of the Solar Neighborhood Galactic Disk within 5 kpc: 1179 New Star Clusters Found in Gaia DR3 |
| title_fullStr | Blind Search of the Solar Neighborhood Galactic Disk within 5 kpc: 1179 New Star Clusters Found in Gaia DR3 |
| title_full_unstemmed | Blind Search of the Solar Neighborhood Galactic Disk within 5 kpc: 1179 New Star Clusters Found in Gaia DR3 |
| title_short | Blind Search of the Solar Neighborhood Galactic Disk within 5 kpc: 1179 New Star Clusters Found in Gaia DR3 |
| title_sort | blind search of the solar neighborhood galactic disk within 5 kpc 1179 new star clusters found in gaia dr3 |
| topic | Open star clusters Star clusters |
| url | https://doi.org/10.3847/1538-4365/accb50 |
| work_keys_str_mv | AT huanbinchi blindsearchofthesolarneighborhoodgalacticdiskwithin5kpc1179newstarclustersfoundingaiadr3 AT fengwang blindsearchofthesolarneighborhoodgalacticdiskwithin5kpc1179newstarclustersfoundingaiadr3 AT wentingwang blindsearchofthesolarneighborhoodgalacticdiskwithin5kpc1179newstarclustersfoundingaiadr3 AT huideng blindsearchofthesolarneighborhoodgalacticdiskwithin5kpc1179newstarclustersfoundingaiadr3 AT zhongmuli blindsearchofthesolarneighborhoodgalacticdiskwithin5kpc1179newstarclustersfoundingaiadr3 |