Results 11 to 20 of about 6,518 (266)
Re-evaluating old stellar populations [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 20 pages. MNRAS (in press). Paper accompanies v2.2 release of the Binary Population and Spectral Synthesis (BPASS) models at http://bpass.auckland.ac.nz or http://warwick.ac.uk ...
Stanway, Elizabeth R., Eldridge, J. J.
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A Multiwavelength Classification and Study of Red Supergiant Candidates in NGC 6946
The Astrophysical Journal, 2023 We have combined resolved stellar photometry from Hubble Space Telescope (HST), Spitzer, and Gaia to identify red supergiant (RSG) candidates in NGC 6946, based on their colors, proper motions, visual morphologies, and spectral energy distributions.
Jared R. Johnson +5 more
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The Masses of Supernova Remnant Progenitors in M33
The Astrophysical Journal, 2023 Using resolved optical stellar photometry from the Panchromatic Hubble Andromeda Treasury Triangulum Extended Region survey, we measured the star formation history near the position of 85 supernova remnants (SNRs) in M33.
Brad Koplitz +9 more
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Synthetic stellar populations: single stellar populations, stellar interior models and primordial protogalaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 We present a new set of stellar interior and synthesis models for predicting the integrated emission from stellar populations in star clusters and galaxies of arbitrary age and metallicity. This work differs from existing spectral synthesis codes in a number of important ways, namely (1) the incorporation of new stellar evolutionary tracks, with ...
Jimenez, Raul +4 more
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Origins of the Evil Eye: M64's Stellar Halo Reveals the Recent Accretion of an SMC-mass Satellite
The Astrophysical Journal Letters, 2023 M64, often called the “Evil Eye” galaxy, is unique among local galaxies. Beyond its dramatic, dusty nucleus, it also hosts an outer gas disk that counter-rotates relative to its stars.
Adam Smercina +11 more
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Multiple Stellar Populations at Less Evolved Stages. III. A Possible Helium Spread in NGC 2210
The Astrophysical Journal, 2023 Helium variations are common features of globular clusters (GCs) with multiple stellar populations. All the formation scenarios predict that secondary population stars are enhanced in helium, but the exact helium content depends on the polluters ...
Chengyuan Li +8 more
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RR Lyrae Variables as Tracers of the Galactic Bulge Kinematic Structure
Universe, 2022 RR Lyrae stars are recognized as some of the oldest stars in the Universe. In addition, they are some of the few old celestial objects for which distances can be reliably inferred.
Andrea M. Kunder
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Stellar Population Models [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractModelling stellar populations in galaxies is a key approach to gain knowledge on the still elusive process of galaxy formation as a function of cosmic time. In this review, after a summary of the state-of-art, I discuss three aspects of the modelling, that are particularly relevant to massive galaxies, the focus of this symposium, at low and ...
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Multiple Populations in Star Clusters
Universe, 2022 We review the multiple population (MP) phenomenon of globular clusters (GCs): i.e., the evidence that GCs typically host groups of stars with different elemental abundances and/or distinct sequences in photometric diagrams.
Antonino P. Milone, Anna F. Marino
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