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Related papers: MOCCA-SURVEY database I. Accreting white dwarf bin…

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We investigate here populations of cataclysmic variables (CVs) in a set of 288 globular cluster (GC) models evolved with the MOCCA code. This is by far the largest sample of GC models ever analysed with respect to CVs. Contrary to what has…

Astrophysics of Galaxies · Physics 2018-12-12 Diogo Belloni , Mirek Giersz , Liliana E. Rivera Sandoval , Abbas Askar , Paweł Ciecieląg

This is the second in a series of papers associated with cataclysmic variables (CVs) and related objects, formed in a suite of simulations for globular cluster evolution performed with the MOCCA Monte Carlo code. We study the properties of…

Astrophysics of Galaxies · Physics 2016-12-05 Diogo Belloni , Mirek Giersz , Helio J. Rocha-Pinto , Nathan Leigh , Abbas Askar

In this paper, which is the first in a series of papers associated with cataclysmic variables and related objects, we introduce the CATUABA code, a numerical machinery written for analysis of the MOCCA simulations, and show some first…

Astrophysics of Galaxies · Physics 2016-08-12 Diogo Belloni , Mirek Giersz , Abbas Askar , Nathan Leigh , Arkadiusz Hypki

We have been investigating populations of cataclysmic variables (CVs) in a set of more than 300 globular cluster (GC) models evolved with the MOCCA code. One of the main questions we have intended to answer is whether most CVs in GCs are…

Astrophysics of Galaxies · Physics 2020-03-18 Diogo Belloni , Mirek Giersz , Liliana E. Rivera Sandoval , Abbas Askar , Pawel Ciecielag

In this first investigation of the MOCCA database with respect to cataclysmic variables, we found that for models with Kroupa initial distributions, considering the standard value of the efficiency of the common-envelope phase adopted in…

Astrophysics of Galaxies · Physics 2016-07-27 Diogo Belloni , Mirek Giersz , Abbas Askar , Arkadiusz Hypki

The study of star clusters plays an important role in our understanding of the Universe since these systems are natural laboratories for testing theories of stellar dynamics and evolution. Particularly, globular clusters (GCs) are one of…

High Energy Astrophysical Phenomena · Physics 2020-08-31 Diogo Belloni , Liliana E. Rivera Sandoval

Dynamical interactions in globular clusters (GCs) significantly impact the formation and evolution of binary sources, including cataclysmic variables (CVs). This study investigates the connection between dynamical states of GCs and X-ray…

High Energy Astrophysical Phenomena · Physics 2024-05-30 Kwangmin Oh , Jongsuk Hong , C. Y. Hui , Sangin Kim , Mirek Giersz

Although the theory of cataclysmic variable (CV) evolution is able to explain several observational aspects, strong discrepancies have existed for decades between observations and theoretical predictions of the orbital period distribution,…

Solar and Stellar Astrophysics · Physics 2019-09-30 Monica Zorotovic , Matthias R. Schreiber

We use an independent new sample of cataclysmic variables (CVs), constructed by selecting objects for Halpha emission, to constrain the properties of the intrinsic CV population. This sample is restricted to systems that are likely to be…

Astrophysics · Physics 2009-11-13 Magaretha L. Pretorius , Christian Knigge

In this paper, the first of a series, we study the stellar dynamical and evolutionary processes leading to the formation of compact binaries containing white dwarfs in dense globular clusters. We examine the processes leading to the…

Astrophysics · Physics 2009-11-11 N. Ivanova , C. O. Heinke , F. A. Rasio , R. E. Taam , K. Belczynski , J. Fregeau

Cataclysmic variables (CVs) are tracers of dynamical evolution in globular clusters. A significant sample has been found by the relatively shallow \Halpha surveys conducted with HST thus far in just three globulars: NGC 6397 (3), NGC 6752…

Astrophysics · Physics 2007-05-23 Jonathan E. Grindlay

We present a binary evolution study of cataclysmic variables (CVs) and related systems with white dwarf accretors, including for example, AM CVn systems, classical novae, supersoft X-ray sources, and systems with giant donor stars. Our…

Solar and Stellar Astrophysics · Physics 2016-12-14 B. Kalomeni , L. Nelson , S. Rappaport , M. Molnar , J. Quintin , K. Yakut

Every massive globular cluster (GC) is expected to harbour a significant population of cataclysmic variables (CVs). In this review, I first explain why GC CVs matter astrophysically, how many and what types are theoretically predicted to…

Solar and Stellar Astrophysics · Physics 2012-02-13 Christian Knigge

The population of compact binaries in dense stellar systems is affected strongly by frequent dynamical interactions between stars and their interplay with the stellar evolution. In this contribution, we consider these effects on binaries…

Astrophysics · Physics 2007-05-23 N. Ivanova , F. A. Rasio

The predicted and observed space density of cataclysmic variables (CVs) have been for a long time discrepant by at least an order of magnitude. The standard model of CV evolution predicts that the vast majority of CVs should be period…

We apply the angular momentum loss rates inferred from open cluster stars to the evolution of cataclysmic variables (CVs). We show that the angular momentum prescriptions used in earlier CV studies are inconsistent with the measured…

Astrophysics · Physics 2009-11-06 N. Andronov , M. Pinsonneault , A. Sills

Based on the current detectable cataclysmic variable (CV) population in Galactic globular clusters (GCs), we show that there is not a clear relation between the number of sources per unit of mass and the stellar encounter rate, the cluster…

Solar and Stellar Astrophysics · Physics 2024-04-08 Liliana Rivera Sandoval , Diogo Belloni , Miriam Ramos Arevalo

The formation of cataclysmic variables (CVs) has long been modeled as a product of common envelope evolution (CEE) in isolated binaries. However, a significant fraction of intermediate-mass stars -- the progenitors of the white dwarfs (WDs)…

Solar and Stellar Astrophysics · Physics 2025-07-14 Cheyanne Shariat , Kareem El-Badry , Smadar Naoz , Antonio C. Rodriguez , Jan van Roestel

We present measurements of the component masses in 15 Cataclysmic Variables (CVs) - 6 new estimates and 9 improved estimates. We provide new calibrations of the relationship between superhump period excess and mass ratio, and use this…

There could be a significant population of double white dwarf binaries (DWDs) inside globular clusters (GCs), however, these are often too faint to be individually observed. We have utilized a large number GC models evolved with the Monte…

Solar and Stellar Astrophysics · Physics 2025-01-06 Lucas Hellström , Mirosław Giersz , Arkadiusz Hypki , Diogo Belloni , Abbas Askar , Grzegorz Wiktorowicz
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