A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream
We report the discovery of a new stream (dubbed as Yangtze) detected in Gaia Data Release 3. The stream is at a heliocentric distance of ∼9.12 kpc and spans nearly 27° by 1.°9 on the sky. The color–magnitude diagram of Yangtze indicates a stellar population of age ∼11 Gyr and [M/H] ∼ −0.7 dex. It ha...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal Letters |
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| Online Access: | https://doi.org/10.3847/2041-8213/acbb5c |
| _version_ | 1797701934420852736 |
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| author | Yong Yang Jing-Kun Zhao Xian-Hao Ye Gang Zhao Ke-Feng Tan |
| author_facet | Yong Yang Jing-Kun Zhao Xian-Hao Ye Gang Zhao Ke-Feng Tan |
| author_sort | Yong Yang |
| collection | DOAJ |
| description | We report the discovery of a new stream (dubbed as Yangtze) detected in Gaia Data Release 3. The stream is at a heliocentric distance of ∼9.12 kpc and spans nearly 27° by 1.°9 on the sky. The color–magnitude diagram of Yangtze indicates a stellar population of age ∼11 Gyr and [M/H] ∼ −0.7 dex. It has a number density of about 5.5 stars deg ^−2 along with a surface brightness of Σ _G ≃ 34.9 mag arcsec ^−2 . The dynamics and metallicity estimate suggest that Yangtze may be closely related to Palomar 1 and the Anticenter Stream. |
| first_indexed | 2024-03-12T04:43:53Z |
| format | Article |
| id | doaj.art-515c8f92210741758ade263620ee43f8 |
| institution | Directory Open Access Journal |
| issn | 2041-8205 |
| language | English |
| last_indexed | 2024-03-12T04:43:53Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Letters |
| spelling | doaj.art-515c8f92210741758ade263620ee43f82023-09-03T09:30:37ZengIOP PublishingThe Astrophysical Journal Letters2041-82052023-01-019451L510.3847/2041-8213/acbb5cA Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter StreamYong Yang0https://orcid.org/0000-0001-7609-1947Jing-Kun Zhao1https://orcid.org/0000-0003-2868-8276Xian-Hao Ye2https://orcid.org/0000-0002-5805-8112Gang Zhao3https://orcid.org/0000-0002-8980-945XKe-Feng Tan4https://orcid.org/0000-0003-0173-6397CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People’s Republic of China zjk@bao.ac.cn; School of Astronomy and Space Science, University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of ChinaCAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People’s Republic of China zjk@bao.ac.cnCAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People’s Republic of China zjk@bao.ac.cn; School of Astronomy and Space Science, University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of ChinaCAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People’s Republic of China zjk@bao.ac.cn; School of Astronomy and Space Science, University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of ChinaCAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People’s Republic of China zjk@bao.ac.cnWe report the discovery of a new stream (dubbed as Yangtze) detected in Gaia Data Release 3. The stream is at a heliocentric distance of ∼9.12 kpc and spans nearly 27° by 1.°9 on the sky. The color–magnitude diagram of Yangtze indicates a stellar population of age ∼11 Gyr and [M/H] ∼ −0.7 dex. It has a number density of about 5.5 stars deg ^−2 along with a surface brightness of Σ _G ≃ 34.9 mag arcsec ^−2 . The dynamics and metallicity estimate suggest that Yangtze may be closely related to Palomar 1 and the Anticenter Stream.https://doi.org/10.3847/2041-8213/acbb5cMilky Way stellar haloStellar streams |
| spellingShingle | Yong Yang Jing-Kun Zhao Xian-Hao Ye Gang Zhao Ke-Feng Tan A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream The Astrophysical Journal Letters Milky Way stellar halo Stellar streams |
| title | A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream |
| title_full | A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream |
| title_fullStr | A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream |
| title_full_unstemmed | A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream |
| title_short | A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream |
| title_sort | dwarf galaxy debris stream associated with palomar 1 and the anticenter stream |
| topic | Milky Way stellar halo Stellar streams |
| url | https://doi.org/10.3847/2041-8213/acbb5c |
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