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Related papers: Estimating Transient Rates from Cosmological Simul…

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Mergers of binary compact objects, accompanied with electromagnetic (EM) counterparts, offer excellent opportunities to explore varied cosmological models, since gravitational waves (GWs) and EM counterparts always carry the information of…

General Relativity and Quantum Cosmology · Physics 2024-01-31 Ran Chen , Yi-Ying Wang , Lei Zu , Yi-Zhong Fan

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…

Mergers of binaries comprised of compact objects can give rise to explosive transient events, heralding the birth of exotic objects which cannot be formed through single star evolution. Using a large number of direct N-body simulations, we…

High Energy Astrophysical Phenomena · Physics 2020-05-20 Giacomo Fragione , Brian D. Metzger , Rosalba Perna , Nathan W. C. Leigh , Bence Kocsis

We present unified chemical and spectrophotometric evolutionary synthesis models that allow to describe composite stellar populations in a chemically consistent way. Keeping track of the ISM abundance at birth of each star and using sets of…

Astrophysics · Physics 2020-05-27 U. Fritze-v. Alvensleben

The abundance gradients and the radial gas profile of the Galactic disc are analysed by means of a model for the chemical evolution of galaxies. As one of the major uncertainties in models for galaxy evolution is the star formation (SF)…

Astrophysics · Physics 2007-05-23 L. Portinari , C. Chiosi

From catalogs of gravitational-wave transients, the population-level properties of their sources and the formation channels of merging compact binaries can be constrained. However, astrophysical conclusions can be biased by misspecification…

General Relativity and Quantum Cosmology · Physics 2025-10-08 Noah E. Wolfe , Matthew Mould , Jack Heinzel , Salvatore Vitale

We simulate the formation and chemodynamical evolution of 124 elliptical galaxies by using a GRAPE-SPH code that includes various physical processes associated with the formation of stellar systems: radiative cooling, star formation,…

Astrophysics · Physics 2011-09-30 Chiaki Kobayashi

Constraining the star formation histories (SFHs) of individual galaxies is crucial to understanding the mechanisms that regulate their evolution. Here, we combine multi-wavelength (ultraviolet, optical, and infrared) measurements of a very…

Astrophysics of Galaxies · Physics 2016-06-15 Camilla Pacifici , Sree Oh , Kyuseok Oh , Jaehyun Lee , Sukyoung K. Yi

Here we investigate the evolution of a Milky Way (MW) -like galaxy with the aim of predicting the properties of its progenitors all the way from $z \sim 20$ to $z = 0$. We apply GAMESH (Graziani et al. 2015) to a high resolution N-Body…

Astrophysics of Galaxies · Physics 2017-04-18 Luca Graziani , M. de Bennassuti , R. Schneider , D. Kawata , S. Salvadori

Rapid binary population synthesis codes are often used to investigate the evolution of compact-object binaries. They typically rely on analytical fits of single-star evolutionary tracks and parameterized models for interactive phases of…

High Energy Astrophysical Phenomena · Physics 2021-12-08 Monica Gallegos-Garcia , Christopher P L Berry , Pablo Marchant , Vicky Kalogera

Models of the chemical evolution of our Galaxy are extended to include radial migration of stars and flow of gas through the disc. The models track the production of both iron and alpha elements. A model is chosen that provides an excellent…

Astrophysics · Physics 2015-05-13 Ralph Schoenrich , James Binney

I attempt to piece together a consistent scenario based on current estimates of the evolution of the star formation rate of the Universe, the metallicity evolution of the star-forming regions of the Universe and the most recent observations…

Astrophysics · Physics 2007-05-23 Charles H. Lineweaver

Stellar evolution modelling is fundamental to many areas of astrophysics including stellar populations in both nearby and distant galaxies. It is heavily influenced by chemical composition. Observations of distant galaxies and…

Astrophysics of Galaxies · Physics 2025-01-29 Conor M Byrne , Jan J Eldridge , Elizabeth R Stanway

We use a Hybrid Effective Field Theory (HEFT) model to constrain the evolution of low-redshift $(z\lesssim0.4)$ matter fluctuations by cross-correlating DESI Bright Galaxy Survey (BGS) legacy imaging with the latest CMB lensing maps from…

Cosmology and Nongalactic Astrophysics · Physics 2025-05-28 Noah Sailer , Joseph DeRose , Simone Ferraro , Shi-Fan Chen , Rongpu Zhou , Martin White , Joshua Kim , Mathew Madhavacheril

We contrast the latest observations of the cosmic metal density in neutral gas ($\rho_{\rm met,neu}$) with three cosmological galaxy evolution simulations: L-GALAXIES 2020, TNG100, and EAGLE. We find that the fraction of total metals that…

Astrophysics of Galaxies · Physics 2021-11-04 Robert M. Yates , Celine Peroux , Dylan Nelson

Recent observations in the total luminosity density have led to significant progress in establishing the star formation rate (SFR) at high redshift. Concurrently observed gamma-ray burst rates have also been used to extract the SFR at high…

Astrophysics of Galaxies · Physics 2015-06-22 E. Vangioni , K. A. Olive , T. Prestegard , J. Silk , P. Petitjean , V. Mandic

We investigate the differential effects of metal cooling and galactic stellar winds on the cosmological formation of individual galaxies with three sets of cosmological, hydrodynamical zoom simulations of 45 halos in the mass range…

Short-period double white dwarf (DWD) binaries will be the most prolific source of gravitational waves (GWs) for the Laser Interferometer Space Antenna (LISA). DWDs with GW frequencies below $\sim1$ mHz will be the dominant contributor to a…

High Energy Astrophysical Phenomena · Physics 2023-04-05 Sarah Thiele , Katelyn Breivik , Robyn E. Sanderson , Rodrigo Luger

High-resolution galaxy spectra encode information about the stellar populations within galaxies. The properties of the stars, such as their ages, masses, and metallicities, provide insights into the underlying physical processes that drive…

The next generation of wide-field cosmic microwave background (CMB) surveys are uniquely poised to open a new window for time-domain astronomy in the millimeter band. Here we explore the discovery phase space for extragalactic transients…

High Energy Astrophysical Phenomena · Physics 2022-09-13 T. Eftekhari , E. Berger , B. D. Metzger , T. Laskar , V. A. Villar , K. D. Alexander , G. P. Holder , J. D. Vieira , N. Whitehorn , P. K. G. Williams
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