中文
相关论文

相关论文: On the initial binary population for star cluster …

200 篇论文

The paper presents an analysis of properties of populations of blue stragglers (BSs) in evolving globular clusters, based on numerical simulations done with the MOCCA code for various initial globular clusters conditions. We find that…

星系天体物理 · 物理学 2017-01-18 Arkadiusz Hypki , Mirek Giersz

We investigate the role of binaries and chromospheric emission on HST photometry of globular clusters' stars. We quantify their respective effects on the position of stars in the chromosome map, especially among the first population. We…

太阳与恒星天体物理 · 物理学 2020-03-11 Fabrice Martins , Julien Morin , Corinne Charbonnel , Carmela Lardo , William Chantereau

The chemical processes during the Asymptotic Giant Branch (AGB) evolution of intermediate mass single stars predict most of the observations of the different populations in Globular Clusters although some important issues still need to be…

星系天体物理 · 物理学 2014-01-24 N. Mennekens , D. Vanbeveren , J. P. De Greve

Globular Clusters (GCs) in the Milky Way are the primary laboratories for establishing the ages of the oldest stellar populations and for measuring the color-magnitude relation of stars. In infrared (IR) color-magnitude diagrams (CMDs), the…

太阳与恒星天体物理 · 物理学 2016-05-25 Matteo Correnti , Mario Gennaro , Jason S. Kalirai , Thomas M. Brown , Annalisa Calamida

Recent N-body simulations predict that large numbers of stellar black holes (BHs) could remain bound to globular clusters (GCs) at present, and merging BH--BH binaries are produced dynamically in significant numbers. We systematically vary…

星系天体物理 · 物理学 2017-01-11 Sourav Chatterjee , Carl L. Rodriguez , Frederic A. Rasio

We present the result of a survey of Monte Carlo simulations of globular clusters hosting two generations of stars including a large (f_b=50%) fraction of primordial binaries in both populations. The dynamical evolution of the two stellar…

太阳与恒星天体物理 · 物理学 2022-03-14 A. Sollima , R. Gratton , S. Lucatello , E. Carretta

(abridged) We present the first study that combines binary population synthesis in the Galactic disk and detailed evolutionary calculations of low- and intermediate-mass X-ray binaries (L/IMXBs). We show that the formation probability of…

天体物理学 · 物理学 2009-11-07 E. Pfahl , S. Rappaport , Ph. Podsiadlowski

Context: The dynamical evolution of binary populations in embedded star clusters shapes the statistical properties of binaries observed in the Galactic field. Accurately modelling this process requires resolving both early cluster dynamics…

星系天体物理 · 物理学 2026-02-03 Wenjie Wu , Pavel Kroupa , Vikrant V. Jadhav

Disentangling distinct stellar populations along the red-giant branches (RGBs) of Globular Clusters (GCs) is possible by using the pseudo two-color diagram dubbed chromosome map (ChM). One of the most intriguing findings is that the…

Buzzoni's (1989) grid of synthetic spectral energy distributions, representative of old stellar populations, was used to derive colours in different photometric systems, and to compare the theoretical predictions with the observational data…

天体物理学 · 物理学 2007-05-23 S. Covino , L. E. Pasinetti Fracassini , M. L. Malagnini , A. Buzzoni

Multiple stellar populations (MPs) are a distinct characteristic of Globular Clusters (GCs). Their general properties have been widely studied among main sequence, red giant branch (RGB) and horizontal branch (HB) stars, but a common…

太阳与恒星天体物理 · 物理学 2021-03-31 E. P. Lagioia , A. P. Milone , A. F. Marino , M. Tailo , A. Renzini , M. Carlos , G. Cordoni , E. Dondoglio , S. Jang , A. Karakas , A. Dotter

We study the evolution of binary stars in globular clusters using a novel approach combining a state-of-the-art population synthesis code with a simple treatment of dynamical interactions in the dense cluster core. We find that the…

天体物理学 · 物理学 2007-05-23 N. Ivanova , K. Belczynski , J. M. Fregeau , F. A. Rasio

Recent stellar evolution models for globular clusters (GCs) in multiple population paradigm suggest that horizontal-branch (HB) morphology and mean period of type ab RR Lyrae variables are mostly determined by He & CNO abundances and…

星系天体物理 · 物理学 2020-01-08 Sohee Jang , Jenny J. Kim , Young-Wook Lee

Understanding the formation of multiple populations in globular clusters (GCs) represents a challenge for stellar population studies. Nevertheless, the outermost cluster regions, likely to hold clues about the initial configuration of GC…

We studied the spatial distributions of multiple stellar populations (MPs) in a sample of 20 globular clusters (GCs) spanning a broad range of dynamical ages. The differences between first-population (FP) and second-population (SP) stars…

太阳与恒星天体物理 · 物理学 2019-10-16 E. Dalessandro , M. Cadelano , E. Vesperini , S. Martocchia , F. R. Ferraro , B. Lanzoni , N. Bastian , J. Hong , N. Sanna

Globular Clusters (GCs) are generally treated as natural validators of simple stellar population (SSP) models. However, there are still some differences between real GCs and SSPs. In this work we use a direct $N$-body simulation code {\hf…

星系天体物理 · 物理学 2015-06-22 Yulong Zhuang , Fenghui Zhang , Peter Anders , Zhifeng Ruan , Liantao Cheng , Xiaoyu Kang

We study the dynamical evolution of globular clusters containing primordial binaries, including full single and binary stellar evolution using our Monte Carlo cluster evolution code updated with an adaptation of the single and binary…

星系天体物理 · 物理学 2014-11-20 Sourav Chatterjee , John M. Fregeau , Stefan Umbreit , Frederic A. Rasio

Modeling binary star populations is critical to linking the theories of star formation and stellar evolution with observations. In order to test these theories, we need accurate models of observable binary populations. The Kepler Eclipsing…

太阳与恒星天体物理 · 物理学 2021-03-24 Mark Wells , Andrej Prša

The majority of Galactic globular clusters (GCs) contain multiple stellar populations displaying specific chemical abundance variations. In particular, GCs generally contain a `primordial' population with abundances similar to field stars,…

星系天体物理 · 物理学 2023-02-01 E. Leitinger , H. Baumgardt , I. Cabrera-Ziri , M. Hilker , E. Pancino

We explore the evolution of various properties of multiple-population globular clusters (GCs) for a broad range of initial conditions. We simulated over 200 GC models using the MOCCA Monte Carlo code and find that present-day properties…