Blue Straggler Stars in Galactic Open Clusters and the Simple Stellar Population Model
arXiv:astro-ph/0609745 · doi:10.1086/512964
Abstract
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 our previous work. Expansion of our sample in the current work to include younger age clusters provides a larger data base to expose the question raised for the simple stellar population model. The working sample now includes 97 Galactic open clusters of ages ranging from 0.1 to several Gyrs. The contributions of blue straggler stars to the integrated light of the host clusters are calculated on an individual cluster base. A data base of observational constrained simple stellar population model is made which has a larger age coverage than our previous work. It is shown in this work that the general existence of blue stragglers in star clusters of our sample dramatically altered the predictions of convectional stellar population model in terms of spectral energy distribution. The integrated spectral energy distributions of the synthetic spectra of the clusters are enhanced towards shorter wavelengths, therefore the results of the present work will cast new lights in understanding the properties of stellar populations.
arXiv comment27 pages, 8 figures, 1 table, submitted to ApJ
References in corpus (30)
- Stellar population synthesis at the resolution of 2003
- New catalogue of optically visible open clusters and candidates
- A standard stellar library for evolutionary synthesis: I. Calibration of theoretical spectra
- Astrophysical parameters of Galactic open clusters
- HST color-magnitude diagrams of 74 galactic globular clusters in the HST F439W and F555W bands
- A Complete N-body Model of the Old Open Cluster M67
- Blue straggler production in globular clusters
- Blue Straggler Stars: a direct comparison of Star counts and population ratios in six Galactic Globular Clusters
- Iron abundances from high-resolution spectroscopy of the open clusters NGC 2506, NGC 6134, and IC 4651
- The intermediate-age open cluster NGC 2158
- Broad-band colors and overall photometric properties of template galaxy models from stellar population synthesis
- The blue stragglers formed via mass transfer in old open clusters
- WIYN Open Cluster Study 5. Lithium Depletion and Metallicity in G and K Dwarfs of the Open Cluster M35
- Rotation and activity in the solar-metallicity open cluster NGC2516
- Blue Stragglers in Galactic Open Clusters and the Integrated Spectral Energy Distributions
- Effects of chemical composition and thermohaline mixing on the accreting components for low--mass close binaries: application to blue stragglers
- Old open clusters: UBGVRI photometry of NGC 2506
- The intermediate-age open cluster NGC 2112
- New membership determination and proper motions of NGC 1817. Parametric and non-parametric approach
- Photometric and spectroscopic study of the intermediate age open cluster NGC 3960
- Survey for Transiting Extrasolar Planets in Stellar Systems: I. Fundamental Parameters of the Open Cluster NGC 1245
- WIYN Open Cluster Study. XIX. Main Sequence Fitting Distances to Open Clusters Using V-K Color-Magnitude Diagrams
- Star clusters in the Carina complex: UBVRI photometry of NGC3114, Collinder228 and vdB-Hagen99
- uvbyHbeta CCD Photometry of Clusters. IV. Solving the Riddle of NGC 3680
- uvbyCaHbeta CCD Photometry of Clusters. V. The Metal-Deficient Open Cluster NGC 2243
- UBVI CCD Photometry of the Old Open Cluster Berkeley 17
- UBVI photometry of the intermediate age open cluster NGC 6939
- Survey for Transiting Extrasolar Planets in Stellar Systems. II. Spectrophotometry and Metallicities of Open Clusters
- Photometric Monitoring of Open Clusters I. The Survey
- New analysis in the field of open cluster Collinder 223
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- Fitting the integrated Spectral Energy Distributions of Galaxies
- GALEV evolutionary synthesis models - I. Code, input physics and web-interface
- From star clusters to dwarf galaxies: The properties of dynamically hot stellar systems
- Primordial Binary Evolution and Blue Stragglers
- Discovery of Extended Main Sequence Turn-offs in Four Young Massive Clusters in the Magellanic Clouds
- A revolution in star cluster research: setting the scene
- How binary interactions affect spectral stellar population synthesis
- An Isochrone Database and a Rapid Model for Stellar Population Synthesis
- Blue Straggler Stars in Galactic Open Clusters and the effect of field star contamination
- A MegaCam Survey of Outer Halo Satellites. VI: The Spatially Resolved Star Formation History of the Carina Dwarf Spheroidal Galaxy
- The new detection of blue straggler stars in 50 open clusters using Gaia DR3
- Contribution of primordial binary evolution to the two blue-straggler sequences in globular cluster M30
- Mid-UV Narrow-Band Indices of Evolved Simple Stellar Populations
- Simple Stellar Population Models as probed by the Large Magellanic Cloud Star Cluster ESO 121-SC03
- Systematic differences in simple stellar population model results: Application to the M31 globular-like cluster system
- Simple stellar population models including blue stragglers
- Blue straggler stars beyond the Milky Way. II. A binary origin for blue straggler stars in Magellanic Cloud clusters
- Blue straggler stars beyond the Milky Way: a non-segregated population in the Large Magellanic Cloud cluster NGC 2213
- A spectroscopic study of the blue stragglers in M67
- Modeling blue stragglers in young clusters
- Blue Stragglers in Clusters and Integrated Spectral Properties of Stellar Populations