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Related papers: Stellar populations in STARFORGE II: Comparison wi…

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Aims. We aim to perform consistent comparisons between observations and simulations on the mass dependence of the galaxy major merger fraction at low redshift over an unprecedentedly wide range of stellar masses (10^9 to 10^12 solar…

Astrophysics of Galaxies · Physics 2021-01-04 L. Wang , W. J. Pearson , V. Rodriguez-Gomez

We report the statistical properties of stars, brown dwarfs and multiple systems obtained from the largest hydrodynamical simulation of star cluster formation to date that resolves masses down to the opacity limit for fragmentation (a few…

Astrophysics · Physics 2010-04-29 Matthew Bate

Within the next decade, ground based gravitational wave detectors are in principle capable of determining the compact object merger rate per unit volume of the local universe to better than 20% with more than 30 detections. We argue that…

Astrophysics · Physics 2015-05-13 R. O'Shaughnessy , R. Kopparapu , K. Belczynski

Planet formation is often considered in the context of one circumstellar disk around one star. Yet stellar binary systems are ubiquitous, and thus a substantial fraction of all potential planets must form and evolve in more complex,…

Earth and Planetary Astrophysics · Physics 2022-02-16 Trent J. Dupuy , Adam L. Kraus , Kaitlin M. Kratter , Aaron C. Rizzuto , Andrew W. Mann , Daniel Huber , Michael J. Ireland

The structural and dynamical properties of star clusters are generally derived by means of the comparison between steady-state analytic models and the available observables. With the aim of studying the biases of this approach, we fitted…

Solar and Stellar Astrophysics · Physics 2015-05-12 A. Sollima , H. Baumgardt , A. Zocchi , E. Balbinot , M. Gieles , V. Henault-Brunet , A. L. Varri

We present numerical models of the nebular emission from H II regions around young stellar populations over a range of compositions and ages. The synthetic stellar pop- ulations include both single stars and interacting binary stars. We…

Astrophysics of Galaxies · Physics 2018-03-28 Lin Xiao , Elizabeth Stanway , J. J. Eldridge

We examine the growth of the stellar content of galaxies from z=3-0 in cosmological hydrodynamic simulations incorporating parameterised galactic outflows. Without outflows, galaxies overproduce stellar masses (M*) and star formation rates…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Romeel Davé , Benjamin D. Oppenheimer , Kristian Finlator

We examine the star formation rates (SFRs) of galaxies in a redshift slice encompassing the z=0.834 cluster RX J0152.7-1357. We used a low-dispersion prism in the Inamori Magellan Areal Camera and Spectrograph (IMACS) to identify galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Shannon G. Patel , Bradford P. Holden , Daniel D. Kelson , Garth D. Illingworth , Marijn Franx

We present results from the largest numerical simulation of star formation to resolve the fragmentation process down to the opacity limit. The simulation follows the collapse and fragmentation of a large-scale turbulent molecular cloud to…

Astrophysics · Physics 2011-05-05 Matthew R. Bate , Ian A. Bonnell , Volker Bromm

We investigate the spatial structure and evolution of star formation and the interstellar medium (ISM) in interacting galaxies. We use an extensive suite of parsec-scale galaxy merger simulations (stellar mass ratio = 2.5:1), which employs…

Many, possibly most, stars form in binary and higher-order multiple systems. Therefore, the properties and frequency of binary systems provide strong clues to the star-formation process, and constraints on star-formation models. However,…

Astrophysics of Galaxies · Physics 2015-05-14 Simon P. Goodwin

We study galaxy pairs in the field selected from the 100 K public release of the 2dF galaxy redshift survey. Our analysis provides a well defined sample of 1258 galaxy pairs, a large database suitable for statistical studies of galaxy…

Astrophysics · Physics 2009-11-07 D. G. Lambas , P. B. Tissera , M. Sol Alonso , Georgina Coldwell

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…

Solar and Stellar Astrophysics · Physics 2022-03-14 A. Sollima , R. Gratton , S. Lucatello , E. Carretta

A significant fraction of, and possibly all, stars form in binary or multiple systems. For Solar-mass stars in the Galactic field, the distribution of orbital separations is log-normal over seven orders of magnitude, from $10^{-2} - 10^5$…

Solar and Stellar Astrophysics · Physics 2025-07-23 Mary H. Rawcliffe , Nathan Griffiths-Janvier , Richard J. Parker

Near-infrared imaging surveys of high-mass star-forming regions reveal an amazingly complex interplay between star formation and the environment (Churchwell et al. 2006; Alvarez et al. 2004). By means of near-IR spectroscopy the embedded…

We investigate the origin of observed local star formation relations using radiative magnetohydrodynamic simulations with self-consistent star formation and ionising radiation. We compare these clouds to the density distributions of local…

Astrophysics of Galaxies · Physics 2017-09-06 Sam Geen , Juan D Soler , Patrick Hennebelle

We present the results of a search for wide binary systems among 783 members of three nearby young associations: Taurus-Auriga, Chamaeleon I, and two subgroups of Upper Scorpius. Near-infrared (JHK) imagery from 2MASS was analyzed to search…

Astrophysics · Physics 2011-02-11 Adam L. Kraus , Lynne A. Hillenbrand

We use a set of twelve high-resolution N-body/hydrodynamical simulations in the $\Lambda$CDM cosmology to investigate the origin and formation rate of fossil groups (FGs), which are X-ray bright galaxy groups dominated by a large elliptical…

We present the public release of the stellar mass catalogs for the GOODS-S and UDS fields obtained using some of the deepest near-IR images available, achieved as part of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey…

Stellar parameters for large samples of stars play a crucial role in constraining the nature of stars and stellar populations in the Galaxy. An increasing number of medium-band photometric surveys are presently used in estimating stellar…