JWST observations of Terzan 5 reveal multiple stellar populations with ages of 12.5 and 4.7 Gyr, plus hints of a 3.8 Gyr component, suggesting a multi-epoch formation history.
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8 Pith papers cite this work. Polarity classification is still indexing.
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Photometric study of Glimpse-C02 yields distance 6.3 kpc, age 11.9 Gyr, [Fe/H] = -0.30, and mass 3.57e4 solar masses, classifying it as an old metal-rich bulge globular cluster.
Chemical tagging via Gaussian Mixture Model on multiple abundances shows that halo substructures Sequoia, Heracles, Thamnos, and Helmi Stream are contaminated mixtures dominated by GSE and disc stars, with additional contributions from Sagittarius and omega Cen.
NGC 6553 is a metal-rich globular cluster that formed in situ in the Galactic bulge, shown by its abundance patterns, multiple populations, and chemical DNA tests.
Discovery of NGC 7531-UCD1 as a tidally stripped ultra-compact dwarf in shell-like debris of NGC 7531, with photometric, spectroscopic, and N-body simulation support for a radial-orbit merger ~1 Gyr ago.
The MGCS releases official catalogs, completeness tests, and improved absolute proper motions (~3x better than Gaia) for 34 Galactic globular clusters, updating associations with galaxy progenitors for several systems.
RR Lyrae stars yield metallicity measurements for Milky Way halo substructures including Gaia Sausage/Enceladus at [Fe/H] = -1.57 dex, with some features like ED-1 showing disk contamination and others like Shiva and Shakti suggested as in-situ.
Using 8D chemical clustering on APOGEE DR17 and kinematic matching to e-TidalGCs simulations, the authors report 470 ω Cen-like stars including 6 kinematically consistent with its stream and additional links to streams from five other clusters, supporting a common disrupted progenitor.
citing papers explorer
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The multi-age stellar populations of Terzan 5 as revealed by JWST
JWST observations of Terzan 5 reveal multiple stellar populations with ages of 12.5 and 4.7 Gyr, plus hints of a 3.8 Gyr component, suggesting a multi-epoch formation history.
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Revealing the stellar population of the ultra-obscured Galactic globular cluster Glimpse-C02
Photometric study of Glimpse-C02 yields distance 6.3 kpc, age 11.9 Gyr, [Fe/H] = -0.30, and mass 3.57e4 solar masses, classifying it as an old metal-rich bulge globular cluster.
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Chemical decoding of kinematic substructures in the Galactic halo
Chemical tagging via Gaussian Mixture Model on multiple abundances shows that halo substructures Sequoia, Heracles, Thamnos, and Helmi Stream are contaminated mixtures dominated by GSE and disc stars, with additional contributions from Sagittarius and omega Cen.
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The Bulge Cluster Origin (BulCO) survey with CRIRES at the ESO-VLT: a chemical screening of the Globular Cluster NGC 6553
NGC 6553 is a metal-rich globular cluster that formed in situ in the Galactic bulge, shown by its abundance patterns, multiple populations, and chemical DNA tests.
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A Pearl in the Shell: an ultra-compact dwarf within the tidal debris surrounding spiral galaxy NGC 7531
Discovery of NGC 7531-UCD1 as a tidally stripped ultra-compact dwarf in shell-like debris of NGC 7531, with photometric, spectroscopic, and N-body simulation support for a radial-orbit merger ~1 Gyr ago.
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The Hubble Missing Globular Cluster Survey. III. Astro-photometric catalogs, artificial-star tests, and improved absolute proper motions
The MGCS releases official catalogs, completeness tests, and improved absolute proper motions (~3x better than Gaia) for 34 Galactic globular clusters, updating associations with galaxy progenitors for several systems.
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Probing the Milky Way Halo with RR Lyrae Stars from Gaia Data Release 3
RR Lyrae stars yield metallicity measurements for Milky Way halo substructures including Gaia Sausage/Enceladus at [Fe/H] = -1.57 dex, with some features like ED-1 showing disk contamination and others like Shiva and Shakti suggested as in-situ.
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The Nephele ecosystem: stars, globular clusters, and stellar streams associated with the progenitor galaxy of $\omega$ Centauri
Using 8D chemical clustering on APOGEE DR17 and kinematic matching to e-TidalGCs simulations, the authors report 470 ω Cen-like stars including 6 kinematically consistent with its stream and additional links to streams from five other clusters, supporting a common disrupted progenitor.