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Related papers: Disentangling Stellar Age Estimates from Galactic …

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Observations of circumstellar disks around stars as a function of stellar properties such as mass, metallicity, multiplicity, and age, provide constraints on theories concerning the formation and evolution of planetary systems. Utilizing…

Earth and Planetary Astrophysics · Physics 2015-05-13 Michael R. Meyer

It takes years of effort employing the best telescopes and instruments to obtain high-quality stellar photometry, astrometry, and spectroscopy. Stellar evolution models contain the experience of lifetimes of theoretical calculations and…

In the age of high-resolution spectroscopic stellar surveys of the Milky Way, the number of stars with detailed abundances of multiple elements is rapidly increasing. These elemental abundances are directly influenced by the evolutionary…

The Milky Way galaxy is observed to have multiple components with distinct properties, such as the bulge, disk, and halo. Unraveling the assembly history of these populations provides a powerful test to the theory of galaxy formation and…

Astrophysics of Galaxies · Physics 2015-06-05 Jason Kalirai

Context: Astronomy and astrophysics demand rigorous handling of uncertainties to ensure the credibility of outcomes. The growing integration of artificial intelligence offers a novel avenue to address this necessity. This convergence…

Instrumentation and Methods for Astrophysics · Physics 2025-03-28 Víctor Tamames-Rodero , Andrés Moya , Roberto Javier López , Luis Manuel Sarro

Phylogenetic methods, traditionally used in biology to trace the evolutionary relationships among species, are emerging as a powerful framework to reconstruct evolutionary processes in galaxies from chemical information. We apply galactic…

If we are to develop a comprehensive and predictive theory of galaxy formation and evolution, it is essential that we obtain an accurate assessment of how and when galaxies assemble their stellar populations, and how this assembly varies…

Astrophysics of Galaxies · Physics 2009-02-18 Thomas M. Brown , Marc Postman , Daniela Calzetti

The chemical and spectro-photometric evolution of spiral galaxies is investigated with detailed models, making use of up-to-date ingredients (like metallicity dependent stellar properties) and a prescription for the star formation rate…

Astrophysics · Physics 2009-05-29 S. Boissier , N. Prantzos

During this last decade our knowledge of the evolutionary properties of stars has significantly improved. This result has been achieved thanks to our improved understanding of the physical behavior of stellar matter in the thermal regimes…

Solar and Stellar Astrophysics · Physics 2015-05-14 Santi Cassisi

Stellar ages are critical building blocks of evolutionary models, but challenging to measure for low mass main sequence stars. An unexplored solution in this regime is the application of probabilistic machine learning methods to…

Solar and Stellar Astrophysics · Physics 2023-07-19 Phil Van-Lane , Joshua S. Speagle , Stephanie Douglas

Globular clusters (GCs) provide statistically significant coeval populations of stars spanning various evolutionary stages, allowing robust constraints on stellar evolution model parameters and ages. We analyze eight old Milky Way GCs with…

Astrophysics of Galaxies · Physics 2025-05-07 Jiaqi , Ying , Brian Chaboyer , Michael Boylan-Kolchin , Daniel Weisz , Rowan Goebel-Bain

Age is an important characteristic of a planetary system, but also one that is difficult to determine. Assuming that the host star and the planets are formed at the same time, the challenge is to determine the stellar age. Asteroseismology…

Solar and Stellar Astrophysics · Physics 2018-12-05 Joergen Christensen-Dalsgaard , Victor Silva Aguirre

Analytical models of chemical evolution, including inflow and outflow of gas, are important tools to study how the metal content in galaxies evolves as a function of time. In this work, we present new analytical solutions for the evolution…

Astrophysics of Galaxies · Physics 2017-02-17 E. Spitoni , F. Vincenzo , F. Matteucci

Estimating age distributions, or star formation histories, of stellar populations in the Milky Way is important in order to study the evolution of trends in elemental abundances and kinematics. We build on previous work to develop an…

Instrumentation and Methods for Astrophysics · Physics 2021-01-20 Christian L. Sahlholdt , Lennart Lindegren

Spectroscopic studies of elliptical galaxies show that their stellar population ages, mean metallicity, and $\alpha$-enhancement traced by [Mg/Fe] all increase with galaxy stellar mass or velocity dispersion. We use one-zone galactic…

Spiral galaxies offer a unique opportunity to study the role of star formation in galaxy evolution and to test various theoretical star formation schemes. I review some recent relevant work on the evolution of spiral galaxies. Detailed…

Astrophysics · Physics 2007-05-23 Nikos Prantzos

The determination of chemical abundances in star-forming galaxies and the study of their evolution on cosmological timescales are powerful tools for understanding galaxy formation and evolution. This contribution presents the latest results…

Astrophysics · Physics 2007-05-23 T. Contini , M. -A. Treyer , M. Mouhcine , M. Sullivan , R. S. Ellis

Despite the recent advancements in the field of galaxy formation and evolution, fully self-consistent simulations are still unable to make the detailed predictions necessary for the planned and ongoing large spectroscopic and photometry…

Astrophysics of Galaxies · Physics 2019-08-19 Ivan Minchev , Cristina Chiappini , Marie Martig

In this paper we analyse different chronometers based on the models of chemical evolution developed in Chamcham, Pitts \& Tayler (1993; hereafter CPT) and Chamcham \& Tayler (1994; hereafter CT). In those papers we discussed the ability of…

Astrophysics · Physics 2015-06-24 K. Chamcham , M. A. Hendry

The trends of chemical abundances and abundance ratios observed in stars of different ages, kinematics, and metallicities bear the imprints of several physical processes that concur to shape the host galaxy properties. By inspecting these…