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相关论文: Bayesian Hierarchical Modelling of Initial-Final M…

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We examine the applicability of the initial-to-final mass relation (IFMR) for white dwarfs (WDs) in intermediate-separation binary systems (approximately 1 AU), using astrometric binaries identified in open clusters from Gaia DR3. A careful…

太阳与恒星天体物理 · 物理学 2025-01-30 Oren Ironi , Sagi Ben-Ami , Na'ama Hallakoun , Sahar Shahaf

The Initial-Final Mass-Relation (IFMR) maps the masses of main sequence stars to their white dwarf descendants. The most common approach to measure the IFMR has been to use white dwarfs in clusters. However, it has been shown that wide…

太阳与恒星天体物理 · 物理学 2023-11-28 Mark A. Hollands , Stuart P. Littlefair , Steven G. Parsons

The initial-final mass relation (IFMR) links a star's birth mass to the mass of its white dwarf (WD) remnant, providing key constraints on stellar evolution. Open clusters offer the most straightforward way to empirically determine the…

We present the initial-final mass relation (IFMR) based on the self-consistent analysis of Sirius B and 79 white dwarfs from 13 star clusters. We have also acquired additional signal on eight white dwarfs previously analyzed in the NGC 2099…

太阳与恒星天体物理 · 物理学 2018-10-17 Jeffrey D. Cummings , Jason S. Kalirai , P. -E. Tremblay , Enrico Ramirez-Ruiz , Jieun Choi

We present observational constraints on the initial-final mass relation (IFMR) using wide double white dwarfs (DWDs). We identify 65 new candidate wide DWDs within the Sloan Digital Sky Survey, bringing the number of candidate wide DWDs to…

太阳与恒星天体物理 · 物理学 2015-12-16 Jeff J. Andrews , Marcel A. Agüeros , A. Gianninas , Mukremin Kilic , Saurav Dhital , Scott F. Anderson

We have expanded the sample of observed white dwarfs in the rich open cluster NGC 2099 (M37) with the Keck Low-Resolution Imaging Spectrometer. Of 20 white dwarf candidates, the spectroscopy shows 19 to be true white dwarfs with 14 of these…

太阳与恒星天体物理 · 物理学 2015-07-15 Jeffrey D. Cummings , Jason S. Kalirai , P. -E. Tremblay , Enrico Ramirez-Ruiz

We use data from Gaia DR2 to constrain the initial-final mass relation (IFMR) for field stars with initial masses $0.9 \lesssim m_{\rm in}/M_{\odot} \lesssim 8$. Precise parallaxes have revealed unprecedented substructure in the white dwarf…

太阳与恒星天体物理 · 物理学 2018-07-04 Kareem El-Badry , Hans-Walter Rix , Daniel R. Weisz

The semi-empirical initial-final mass relation (IFMR) connects spectroscopically analyzed white dwarfs in star clusters to the initial masses of the stars that formed them. Most current stellar evolution models, however, predict that stars…

太阳与恒星天体物理 · 物理学 2019-01-30 Jeffrey D. Cummings , Jason S. Kalirai , Jieun Choi , Cyril Georgy , Pier-Emmanuel Tremblay , Enrico Ramirez-Ruiz

The relation between the zero-age main sequence mass of a star and its white-dwarf remnant (the initial-final mass relation) is a powerful tool for exploration of mass loss processes during stellar evolution. We present an empirical…

天体物理学 · 物理学 2009-11-10 Kurtis A. Williams , M. Bolte , Detlev Koester

Recent studies of white dwarfs in open clusters have provided new constraints on the initial - final mass relationship (IFMR) for main sequence stars with masses in the range 2.5 - 6.5 Mo. We re-evaluate the ensemble of data that determines…

天体物理学 · 物理学 2009-11-11 L. Ferrario , D. Wickramasinghe , J. Liebert , K. A. Williams

The initial mass-final mass relationship (IFMR) of white dwarfs (WD) represents a crucial benchmark for stellar evolution models, especially for the efficiency of mixing episodes and mass loss during the asymptotic giant branch (AGB) phase.…

太阳与恒星天体物理 · 物理学 2022-04-14 Paola Marigo

The initial-final mass relation (IFMR) represents the total mass lost by a star during the entirety of its evolution from the zero age main sequence to the white dwarf cooling track. The semi-empirical IFMR is largely based on observations…

太阳与恒星天体物理 · 物理学 2021-09-28 Joseph W. Barnett , Kurtis A. Williams , A. Bédard , Michael Bolte

We demonstrate a new Bayesian technique to invert color-magnitude diagrams of main sequence and white dwarf stars to reveal the underlying cluster properties of age, distance, metallicity, and line-of-sight absorption, as well as individual…

Using the most recent results about white dwarfs in 10 open clusters, we revisit semi-empirical estimates of the initial-final mass relation in star clusters, with emphasis on the use of stellar evolution models. We discuss the influence of…

天体物理学 · 物理学 2011-02-11 Maurizio Salaris , Aldo Serenelli , Achim Weiss , Marcelo Miller Bertolami

We present an initial-final mass relation derived from the spectroscopically-complete volume-limited 40 pc sample of white dwarfs. The relation is modelled using population synthesis methods to derive an initial stellar population which can…

太阳与恒星天体物理 · 物理学 2023-10-25 Tim Cunningham , Pier-Emmanuel Tremblay , Mairi O'Brien

The initial-final mass relation (IFMR) plays a crucial role in understanding stellar structure and evolution by linking a star's initial mass to the mass of the resulting white dwarf. This study explores the IFMR in the initial mass range…

太阳与恒星天体物理 · 物理学 2024-03-18 Francesco Addari , Paola Marigo , Alessandro Bressan , Guglielmo Costa , Kendall Shepherd , Guglielmo Volpato

We examine new methods of producing and analyzing the empirical initial-final mass relation for open cluster white dwarfs (WDs). We re-determine initial and final masses for the complete sample of published cluster WDs and then pare this…

天体物理学 · 物理学 2007-05-23 Kurtis A. Williams

The initial-final mass relation represents a mapping between the mass of a white dwarf remnant and the mass that the hydrogen burning main-sequence star that created it once had. The relation thus far has been constrained using a sample of…

White dwarfs (WDs) in open star clusters are a highly useful ensemble of stars. While numerous researchers use open cluster WDs to study the initial-final mass relation, numerous other evolutionary studies are also enabled by this sample of…

太阳与恒星天体物理 · 物理学 2020-10-14 Kurtis A. Williams

The initial mass function (IMF) is a key ingredient in many studies of galaxy formation and evolution. Although the IMF is often assumed to be universal, there is continuing evidence that it is not universal. Spectroscopic studies that…

星系天体物理 · 物理学 2017-11-21 M. Dries , S. C. Trager , L. V. E. Koopmans , G. Popping , R. S. Somerville
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