PCA of H-band IFU pixel spectra decomposes cool stellar populations in NGC 5128 and NGC 5102, identifying M-giant, long-period variable, and carbon star contributions.
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Progenitor age is the primary physical driver of the host-mass and host-sSFR magnitude steps in Type Ia supernovae, with the mass step eliminated by direct age correction.
Large sample of SN Ia hosts shows young mean progenitor age of 3.5 Gyr and only 1.5 Gyr evolution, leading to negligible cosmological bias of 0.007 mag.
Binary fractions in elliptical galaxies remain approximately flat with radius once stellar population variations are subtracted, showing less than 5% change at one effective radius for nearly all galaxies studied.
Most dusty early-type galaxies exhibit recent star formation components in their stellar populations, as revealed by spectral fitting of 15 nearby examples with a non-dusty control comparison.
Simulations of high-redshift galaxies show the 1719 Å UV index reliably traces stellar metallicity while others are more sensitive to star formation history.
citing papers explorer
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Decomposing cool stellar populations with H-band spectral fluctuations: Long-period variable stars in NGC 5128 and carbon stars in NGC 5102
PCA of H-band IFU pixel spectra decomposes cool stellar populations in NGC 5128 and NGC 5102, identifying M-giant, long-period variable, and carbon star contributions.
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Strong Progenitor Age Bias in Supernova Cosmology. III. Progenitor Age as the Physical Origin of the Type Ia Supernova Magnitude Steps with Host Properties
Progenitor age is the primary physical driver of the host-mass and host-sSFR magnitude steps in Type Ia supernovae, with the mass step eliminated by direct age correction.
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Old Universe, Young SNe Ia: A Statistical Analysis of Type Ia Supernova Progenitor Age from 6,983 TITAN Host Galaxies, and Implications for Cosmology
Large sample of SN Ia hosts shows young mean progenitor age of 3.5 Gyr and only 1.5 Gyr evolution, leading to negligible cosmological bias of 0.007 mag.
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Radial Profiles of Binary Fraction in Elliptical Galaxies
Binary fractions in elliptical galaxies remain approximately flat with radius once stellar population variations are subtracted, showing less than 5% change at one effective radius for nearly all galaxies studied.
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Stellar Population Characterisations in nearby, dusty Early-Type Galaxies
Most dusty early-type galaxies exhibit recent star formation components in their stellar populations, as revealed by spectral fitting of 15 nearby examples with a non-dusty control comparison.
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First Light And Reionization Epoch Simulations (FLARES) XXI: The UV Indices of Galaxies in the Early Universe
Simulations of high-redshift galaxies show the 1719 Å UV index reliably traces stellar metallicity while others are more sensitive to star formation history.