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 |
| Published: |
IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/2041-8213/acbb5c |
| Summary: | 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. |
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| ISSN: | 2041-8205 |