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Asteroids with companions constitute an excellent sample for studying the collisional and dynamical evolution of minor planets. The currently known binary population were discovered by different complementary techniques that produce, for…

Context: Many if not most planetary nebulae (PNe) are now thought to be the outcome of binary evolutionary scenarios. However only a few percent of PNe in the Milky Way are known to host binary systems. The high precision repeated observing…

太阳与恒星天体物理 · 物理学 2021-04-21 N. Chornay , N. A. Walton , D. Jones , H. M. J. Boffin , M. Rejkuba , R. Wesson

In this work, we investigate the impact of tidal torques and mass transfer on the population of double white dwarfs (DWDs) that will be observed with LISA. Starting from a distribution of DWDs at formation predicted by numerical…

太阳与恒星天体物理 · 物理学 2024-12-11 Alexandre Toubiana , Nikolaos Karnesis , Astrid Lamberts , M. Coleman Miller

Observational tests of stellar and Galactic chemical evolution call for the joint knowledge of a star's physical parameters, detailed element abundances, and precise age. For cool main-sequence (MS) stars the abundances of many elements can…

太阳与恒星天体物理 · 物理学 2019-01-09 M. Fouesneau , H. -W. Rix , T. von Hippel , D. W. Hogg , H. Tian

Double white dwarfs (DWDs) will be the most numerous gravitational-wave (GW) sources for the Laser Interferometer Space Antenna (LISA). Most of the Galactic DWDs will be unresolved and will superpose to form a confusion noise foreground,…

We assemble a census of the most massive stars in Orion, then use stellar isochrones to estimate their masses and ages, and use these results to establish the stellar content of Orion's individual OB associations. From this, our new…

星系天体物理 · 物理学 2015-05-19 R. Voss , R. Diehl , J. S. Vink , D. H. Hartmann

Mass transfer stability is an essential issue in binary evolution. Ge et al. studied critical mass ratios for dynamically stable mass transfer by establishing adiabatic mass loss model and found that the donor stars on the giant branches…

太阳与恒星天体物理 · 物理学 2023-01-18 Zhenwei LI , Xuefei Chen , Hongwei Ge , Hai-Liang Chen , Zhanwen Han

We present a catalogue of 1602 white dwarf-main sequence binaries (WDMS) from the spectroscopic Sloan Digital Sky Survey Data Release 6 (SDSS DR6). Among these we identify 440 as new WDMS binaries. We select WDMS binary candidates from…

太阳与恒星天体物理 · 物理学 2015-05-14 A. Rebassa-Mansergas , B. T. Gaensicke , M. R. Schreiber , D. Koester , P. Rodriguez-Gil

The white dwarf mass distribution has been studied primarily at two extremes: objects that presumably evolved as single stars and members of close binaries that likely underwent substantial interaction. This work considers the intermediate…

太阳与恒星天体物理 · 物理学 2025-01-17 Sahar Shahaf

Identifying and removing binary stars from stellar samples is a crucial but complicated task. Regardless of how carefully a sample is selected, some binaries will remain and complicate interpretation of results, especially via flux…

天体物理仪器与方法 · 物理学 2024-11-08 Kendall Sullivan , Adam L. Kraus , Travis A. Berger , Daniel Huber

We develop statistical methods within a Bayesian framework to infer the star formation history from photometric surveys of pre-main sequence populations. Our procedures include correcting for biases due to extinction in magnitude-limited…

太阳与恒星天体物理 · 物理学 2023-06-14 Jairo A. Alzate , Gustavo Bruzual , Marina Kounkel , Gladis Magris , Lee Hartmann , Nuria Calvet , Lyra Cao

We use the results of realistic N-body simulations to investigate the appearance of the white dwarf population in dense star clusters. We show that the presence of a substantial binary population in a star cluster, and the interaction of…

天体物理学 · 物理学 2009-11-07 Jarrod R. Hurley , Michael M. Shara

Since the Gaia data release 2, several works were published describing a bifurcation in the observed white dwarf colour$-$magnitude diagram for $\mbox{$G_{\mathrm{BP}}$}-\mbox{$G_{\mathrm{RP}}$} > 0$. Some possible explanations in the…

太阳与恒星天体物理 · 物理学 2020-02-12 G. Ourique , S. O. Kepler , A. D. Romero , T. S. Klippel , D. Koester

In the single degenerate (SD) scenario for type Ia supernovae (SNe Ia), a mass-accreting white dwarf is expected to experience a supersoft X-ray source (SSS) phase. However, some recent observations showed that the expected number of the…

太阳与恒星天体物理 · 物理学 2015-05-28 Xiangcun Meng , Wuming Yang

Galactic binary neutron stars (BNSs) are a unique laboratory to probe the evolution of BNSs and their progenitors. Here, we use a new version of the population synthesis code SEVN to evolve the population of Galactic BNSs, by modeling the…

The axion, a well-motivated hypothetical particle arising in extensions of the Standard Model, can be produced copiously within the hot, compact cores of white dwarf stars. The shape of the white dwarf luminosity function (WDLF) is a…

太阳与恒星天体物理 · 物理学 2026-03-10 Martín L. Alberino , Marcelo M. Miller Bertolami , María E. Camisassa , Andrea Caputo , Santiago Torres

We present an updated version of the spectroscopic catalogue of white dwarf-main sequence (WDMS) binaries from the Sloan Digital Sky Survey (SDSS). We identify 939 WDMS binaries within the data releases (DR) 9-12 of SDSS plus 40 objects…

太阳与恒星天体物理 · 物理学 2016-03-23 A. Rebassa-Mansergas , J. J. Ren , S. G. Parsons , B. T. Gaensicke , M. R. Schreiber , E. Garcia-Berro , X. -W. Liu , D. Koester

The accretion of tidally disrupted planetary bodies is the current consensus model for the presence of photospheric metals commonly detected in white dwarfs. While most dynamical studies have considered a single star and associated…

地球与行星天体物理 · 物理学 2024-03-21 Hiba Tu Noor , Jay Farihi , Mark Hollands , Silvia Toonen

We have implemented prescriptions for modelling pulsars in the rapid binary population synthesis code COMPAS. We perform a detailed analysis of the double neutron star (DNS) population, accounting for radio survey selection effects. The…

高能天体物理现象 · 物理学 2020-04-22 Debatri Chattopadhyay , Simon Stevenson , Jarrod R. Hurley , Luca J. Rossi , Chris Flynn

The cornerstone mission Gaia, together with complementary surveys, will revolutionize our understanding of the formation and history of our Galaxy, providing accurate stellar masses, radii, ages, distances, as well as chemical properties…

太阳与恒星天体物理 · 物理学 2017-04-26 N. Lagarde , A. C. Robin , C. Reylé , G. Nasello
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