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We investigate the star formation history and chemical evolution of low surface brightness (LSB) disk galaxies by modelling their observed spectro-photometric and chemical properties using a galactic chemical and photometric evolution model…

Astrophysics · Physics 2007-05-23 L. B. van den Hoek , W. J. G. de Blok , J. M. van der Hulst , T. de Jong , .

Evolutionary models form a vital part of stellar population research to understand their evolution, but despite their long history of development, they often misrepresent and misinterpret the properties of stellar population observed…

Astrophysics of Galaxies · Physics 2018-06-27 Yuvraj Harsha Sreedhar , Karl Rakos , Gerhard Hensler

We have measured an extensive set of UBVRIJHK colors for M31 globular clusters [Barmby et al. 2000]. We compare the predicted simple stellar population colors of three population synthesis models to the intrinsic colors of Galactic and M31…

Astrophysics · Physics 2007-05-23 Pauline Barmby , John P. Huchra

We present a comprehensive analysis of the ability of current stellar population models to reproduce the optical (ugriz) and near infra-red (JHK) colours of a small sample of well-studied nearby elliptical and S0 galaxies. We find broad…

We present unresolved single stellar population synthesis models in the near-infrared (NIR) range. The extension to the NIR is important for the study of early-type galaxies, since these galaxies are predominantly old and therefore emit…

Astrophysics of Galaxies · Physics 2015-10-21 S. Meneses-Goytia , R. F. Peletier , S. C. Trager , A. Vazdekis

Using evolutionary population synthesis we present integrated colours, integrated spectral energy distributions and absorption-line indices defined by the Lick Observatory image dissector scanner (referred to as Lick/IDS) system, for an…

Astrophysics · Physics 2007-05-23 Fenghui Zhang , Zhanwen Han , Lifang Li , Jarrod R. Hurley

We present a large grid of stellar evolutionary tracks, which are suitable to modelling star clusters and galaxies by means of population synthesis. The tracks are presented for the initial chemical compositions [Z=0.0004, Y=0.23],…

Astrophysics · Physics 2009-05-29 Leo Girardi , Alessandro Bressan , Gianpaolo Bertelli , Cesare Chiosi

We use the first release of the SDSS/MaStar stellar library comprising ~9000, high S/N spectra, to calculate integrated spectra of stellar population models. The models extend over the wavelength range 0.36-1.03 micron and share the same…

We investigate the uncertainties in the synthetic integrated colors of simple stellar populations. Three types of uncertainties are from the stellar models, the population synthesis techniques, and from the spectral libraries. Despite some…

Astrophysics · Physics 2011-07-18 Sukyoung K. Yi

As the reconstruction of the star-formation histories (SFH) of galaxies from spectroscopic data becomes increasingly popular, we explore the best age resolution achievable with stellar population synthesis (SPS) models, relying on different…

Astrophysics of Galaxies · Physics 2024-01-19 Stefano Zibetti , Edoardo Rossi , Anna R. Gallazzi

This paper is part of a series devoted to the study of the stellar populations in brightest cluster galaxies (BCGs), aimed at setting constraints on the formation and evolution of these objects. We have obtained high signal-to-noise ratio,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 S. I. Loubser , P. Sanchez-Blazquez , A. E. Sansom , I. K. Soechting

We present evolutionary stellar population synthesis models to predict the spectrum of a single-metallicity stellar population, with a spectral sampling of 0.3 A in five spectral regions between 3700 and 5000 A. The models, which are…

Astrophysics · Physics 2009-10-31 Rosa M. Gonzalez Delgado , Claus leitherer , Timothy Heckman

A new tool for the Evolutionary Synthesis of Stellar Populations (EPS) is presented, which is based on three independent matrices, giving respectively: 1) the fuel consumption during each evolutionary phase as a function of stellar mass; 2)…

Astrophysics · Physics 2009-10-30 Claudia Maraston

Evolutionary synthesis models are the prime method to construct models of stellar populations, and to derive physical parameters from observations. One of the assumptions for such models so far has been the time-independence of the stellar…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 P. Anders , H. J. G. L. M Lamers , H. Baumgardt

The presence of an extended blue horizontal branch (HB) in a stellar population is known to affect the age inferred from spectral fitting to stellar population synthesis models. However, most population synthesis models still rely on…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Susan M. Percival , Maurizio Salaris

This paper is the 4th in a series describing the latest additions to the BaSTI stellar evolution database, which consists of a large set of homogeneous models and tools for population synthesis studies. Here we present a new set of low and…

Astrophysics · Physics 2008-12-18 Susan M. Percival , Maurizio Salaris , Santi Cassisi , Adriano Pietrinferni

We present evolutionary synthesis models applied to near--infrared spectral features observed in the spectra of young Magellanic Cloud clusters and starburst galaxies. The temporal evolution of the first and second overtones of CO at 2.29…

It is now possible to measure detailed spectral indices for stellar populations in spiral disks. We propose to interpret these data using evolutionary synthesis models computed from the Star Formation Histories obtained from chemical…

Astrophysics · Physics 2015-06-24 M. Molla , S. Cantin , C. Robert , A. Pellerin , E. Hardy

Blue straggler stars present as secure members in the Galactic open clusters form a major challenge to the conventional picture of evolutionary population synthesis based on the stellar evolution theory of single stars, as illustrated in…

Astrophysics · Physics 2011-02-11 Y. Xin , L. Deng , Z. Han

Theoretical integrated broad-band colors ranging from far-UV to near-IR have been computed for old stellar systems from our evolutionary population synthesis code. These models take into account, for the first time, the detailed systematic…

Astrophysics · Physics 2009-11-07 Hyun-chul Lee , Young-Wook Lee , Brad K. Gibson