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High resolution spectral models for simple stellar populations (SSP) developed in the past few years have become a standard ingredient in studies of stellar population of galaxies. As more such models become available, it becomes…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Roberto Cid Fernandes , Rosa M. Gonzalez Delgado

In recent years, observations have shown that multiple-star systems such as hierarchical triple and quadruple-star systems are common, especially among massive stars. They are potential sources of interesting astrophysical phenomena such as…

Solar and Stellar Astrophysics · Physics 2021-02-19 Adrian S. Hamers , Antti Rantala , Patrick Neunteufel , Holly Preece , Pavan Vynatheya

We present new evolutionary synthesis models for Simple Stellar Populations for a wide range of ages and metallicities. The models are based on the Padova isochrones. The core of the spectral library is provided by the medium resolution…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 M. Molla , M. L. Garcia-Vargas , A. Bressan

We substantially update the capabilities of the open source software package Modules for Experiments in Stellar Astrophysics (MESA), and its one-dimensional stellar evolution module, MESA Star. Improvements in MESA Star's ability to model…

The discovery of multiple stellar populations in Milky Way globular clusters (GCs) has stimulated various follow-up studies on helium-enhanced stellar populations. Here we present the evolutionary population synthesis models for the…

Astrophysics of Galaxies · Physics 2017-06-28 Chul Chung , Suk-Jin Yoon , Young-Wook Lee

We have developed a new stellar population synthesis model designed to study early-type galaxies. It provides optical and near-infrared colors, and line indices for 25 absorption lines. It can synthesize single age, single metallicity…

Astrophysics · Physics 2008-11-26 A. Vazdekis , E. Casuso , R. F. Peletier , J. E. Beckman

Due to their brightness in infrared, asymptotic giant branch (AGB) stars are in important evolutionary stage to be understood at this wavelength. In particular, in next decades, when the infrared optimised telescopes, such as the JWST and…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Mikako Matsuura

I briefly introduce a database of models that describe the evolution of star clusters in several broad-band photometric systems. Models are based on the latest Padova stellar evolutionary tracks - now including the alpha-enhanced case and…

Astrophysics · Physics 2007-05-23 Leo Girardi

The majority of pulsar population synthesis studies performed to date have focused on isolated pulsar evolution. Those that have incorporated pulsar evolution within binary systems have tended to either treat binary evolution poorly of…

Astrophysics · Physics 2009-06-23 Paul Kiel , Jarrod Hurley , Matthew Bailes , James Murray

A stellar population synthesis model, suitable for comparison with Giant Extragalactic HII Regions (GEHRs), is constructed incorporating the recent developments in modelling stellar evolution by Maeder and co-workers and stellar atmospheres…

Astrophysics · Physics 2016-08-30 Y. D. Mayya

After a pedagogical introduction to the main concepts of synthetic photometry, colours and bolometric corrections in the Johnson-Cousins, 2MASS, and HST-ACS/WFC3 photometric systems are generated from MARCS synthetic fluxes for various…

Solar and Stellar Astrophysics · Physics 2014-09-15 Luca Casagrande , Don A. VandenBerg

Over the last decades, evolutionary population synthesis models have powered an unmatched leap forward in our understanding of galaxies. From dating the age of the first galaxies in the Universe to detailed measurements of the chemical…

Astrophysics of Galaxies · Physics 2024-11-13 I. Martín-Navarro , A. Vazdekis

We present results from the first application of the Grid of Red Supergiant and Asymptotic Giant Branch ModelS (GRAMS) model grid to the entire evolved stellar population of the Large Magellanic Cloud (LMC). GRAMS is a pre-computed grid of…

Solar and Stellar Astrophysics · Physics 2015-05-06 D. Riebel , S. Srinivasan , B. Sargent , M. Meixner

The presence of blue straggler stars (BSs) in star clusters has proven a challenge to conventional simple stellar population (SSP) models. Conventional SSP models are based on the evolution theory of single stars. Meanwhile, the typical…

Astrophysics · Physics 2009-11-13 Y. Xin , L. Deng , R. de Grijs , A. D. Mackey , Z. Han

The enhancement of $\alpha$ elements such as oxygen is an important phase in the chemical evolution of the early Universe, with nebular material becoming enriched in these elements sooner than iron. Here we present models which incorporate…

Solar and Stellar Astrophysics · Physics 2022-04-08 C. M. Byrne , E. R. Stanway , J. J. Eldridge , L. McSwiney , O. T. Townsend

We used a new generation of asymptotic giant branch (AGB) stellar models that include dust formation in the stellar winds to find the links between evolutionary models and the observed properties of a homogeneous sample of Large Magellanic…

Solar and Stellar Astrophysics · Physics 2016-08-08 P. Ventura , L. Stanghellini , F. Dell'Agli , D. A. García-Hernández , M. Di Criscienzo

Stars spend most of their lifetime on the main sequence (MS), where hydrogen burning establishes the internal chemical structure that governs the subsequent evolution. In massive stars, mass loss through winds and binary interactions can…

Solar and Stellar Astrophysics · Physics 2026-04-30 Adam Brček , Ryosuke Hirai , Ilya Mandel , Harmony Lower

We investigate the properties of the stellar populations of model galaxies as a function of galaxy evolutionary history and angular momentum content. We use the new semi-analytic model presented in Tonini et al. (2016). This new model…

Astrophysics of Galaxies · Physics 2017-01-11 Chiara Tonini , Simon J. Mutch , J. Stuart B. Wyithe , Darren J. Croton

Asymptotic giant branch stars are essential contributors to the near and mid-IR emission of intermediate age (0.1-1Gyr old) stellar populations. Detecting this light sets constraints on the star formation history in galaxies and,…

Astrophysics · Physics 2007-05-23 A. Lancon

We present here results of stellar evolution calculations that include the latest advances in radiative opacities and neutrino cooling, and discuss on the basis of these models how the internal stellar structure responds to mass-loss from…

Astrophysics · Physics 2015-06-24 R. Jimenez , U. G. Jorgensen , P. Thejll , J. MacDonald , .
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