Spectroscopic measurements confirm a tight 6D phase-space clump of four RGB stars as part of the distant southern spur of the Sagittarius stream, likely stripped from Sagittarius's halo in the earliest interaction phases.
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9 Pith papers cite this work, alongside 177 external citations. Polarity classification is still indexing.
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representative citing papers
Koposov 2 is shown to be an old (13.7 Gyr) star cluster with half-light radius 2.7 pc, absolute magnitude -0.95, and stellar mass 372 solar masses, supporting a star cluster classification over a dwarf galaxy.
The low-mass IMF in Boötes I is consistent with the Milky Way within 68% confidence for broken power-law and lognormal forms, indicating universality at low metallicity.
JWST TRGB distances to 10 SN Ia hosts update calibrations for 11 SNe yielding H0 of 68.4-69.6 km/s/Mpc and show modest shifts when combined with prior HST data.
Simulations of a tuned 1:1 merger of NGC 1052 produce long-lived tidal tails and dwarf galaxies matching observed sizes of DM-free dwarfs, unlike the dwarf bullet model.
JWST NIRCam survey of 11 globular clusters detects multiple populations in low-mass stars, showing discrete sequences in some clusters and continuous distributions or helium/oxygen variations in others, plus an M-dwarf gap in NGC 104.
The paper reports 21 previously unknown variable stars in M71 along with refined cluster parameters (age 12.9 Gyr, [Fe/H] = -0.88, E(B-V) = 0.21, distance modulus 13.01) from a decontaminated CMD.
High-precision analysis of TYC 6044-714-1 favors s+r nucleosynthesis over i-process models, which require implausible conditions and mismatch Ba isotopes.
The thesis assesses the reliability of stellar population synthesis modeling for galaxy physical properties using limited multi-band photometry rather than full spectra.
citing papers explorer
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Tracing the very early disruption of the Sagittarius dwarf galaxy in the distant Milky Way halo
Spectroscopic measurements confirm a tight 6D phase-space clump of four RGB stars as part of the distant southern spur of the Sagittarius stream, likely stripped from Sagittarius's halo in the earliest interaction phases.
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The Hubble Missing Globular Clusters Survey IV. Ultra-faint compact satellites of the Milky Way. The case of Koposov 2
Koposov 2 is shown to be an old (13.7 Gyr) star cluster with half-light radius 2.7 pc, absolute magnitude -0.95, and stellar mass 372 solar masses, supporting a star cluster classification over a dwarf galaxy.
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The Chicago Carnegie Hubble Program: Improving the Calibration of SNe Ia with JWST Measurements of the Tip of the Red Giant Branch
JWST TRGB distances to 10 SN Ia hosts update calibrations for 11 SNe yielding H0 of 68.4-69.6 km/s/Mpc and show modest shifts when combined with prior HST data.
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Tidal origin of dark-matter free dwarf galaxies in the NGC 1052 group
Simulations of a tuned 1:1 merger of NGC 1052 produce long-lived tidal tails and dwarf galaxies matching observed sizes of DM-free dwarfs, unlike the dwarf bullet model.
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Globular Clusters in the Time of the JWST. I. Survey Design and First Results on Multiple Populations and Beyond
JWST NIRCam survey of 11 globular clusters detects multiple populations in low-mass stars, showing discrete sequences in some clusters and continuous distributions or helium/oxygen variations in others, plus an M-dwarf gap in NGC 104.
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Variable stars in the field of the Galactic globular cluster M71
The paper reports 21 previously unknown variable stars in M71 along with refined cluster parameters (age 12.9 Gyr, [Fe/H] = -0.88, E(B-V) = 0.21, distance modulus 13.01) from a decontaminated CMD.
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Observational Signatures and Constraints on the Intermediate Neutron-Capture Process. The Case of the CEMP star TYC 6044-714-1 (RAVE J094921.8-161722)
High-precision analysis of TYC 6044-714-1 favors s+r nucleosynthesis over i-process models, which require implausible conditions and mismatch Ba isotopes.
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Interpreting Galaxy Physical Properties Using Stellar Population Synthesis
The thesis assesses the reliability of stellar population synthesis modeling for galaxy physical properties using limited multi-band photometry rather than full spectra.