Candidate Members of the VMP/EMP Disk System of the Galaxy from the SkyMapper and SAGES Surveys
Authors
Discussion
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Member takes
Implication
Photometric survey analysis reveals 1496 metal-poor stars within the Milky Way disk, indicating the presence of an early-forming primordial Galactic disk.
Key Points
- Identification reveals 1496 candidate very metal-poor stars on prograde orbits within the galactic disk system, demonstrating high rotational velocities.
- Photometric analysis of 5.86 million stars from the SkyMapper and SAGES surveys determined photometric metallicity estimates and full space motions.
- Low orbital eccentricities among candidate extremely metal-poor stars strongly suggest the early formation of a primordial disk in the Milky Way.
Cite This Study
Hong et al. (2024) studied this question.