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Are most Cataclysmic Variables in Globular Clusters dynamically formed

Belloni, Diogo ; Giersz, Mirek ; Sandoval, Liliana E.Rivera ; Askar, Abbas LU orcid and Ciecielag, Pawel (2019) In Proceedings of the International Astronomical Union 14(351). p.404-407
Abstract

We have been investigating populations of cataclysmic variables (CVs) in a set of more than 300 globular cluster (GC) models evolved with themoccacode.[-120pt] One of the main questions we have intended to answer is whether most CVs in GCs are dynamically formed or not. Contrary to what has been argued for a long time, we found that dynamical destruction of primordial CV progenitors is much stronger in GCs than dynamical formation of CVs. In particular, we found that, on average, the detectable CV population is predominantly composed of CVs formed via a typical common envelope phase (â 70 per cent). However, core-collapsed models tend to have higher fractions of bright CVs than non-core-collapsed ones, which suggests then that the... (More)

We have been investigating populations of cataclysmic variables (CVs) in a set of more than 300 globular cluster (GC) models evolved with themoccacode.[-120pt] One of the main questions we have intended to answer is whether most CVs in GCs are dynamically formed or not. Contrary to what has been argued for a long time, we found that dynamical destruction of primordial CV progenitors is much stronger in GCs than dynamical formation of CVs. In particular, we found that, on average, the detectable CV population is predominantly composed of CVs formed via a typical common envelope phase (â 70 per cent). However, core-collapsed models tend to have higher fractions of bright CVs than non-core-collapsed ones, which suggests then that the formation of CVs is indeed slightly favoured through strong dynamical interactions in core-collapsed GCs, due to the high stellar densities in their cores.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
binaries: general, cataclysmic variables, globular clusters: general, methods: numerical, novae
in
Proceedings of the International Astronomical Union
volume
14
issue
351
pages
4 pages
publisher
Cambridge University Press
external identifiers
  • scopus:85082006886
ISSN
1743-9213
DOI
10.1017/S174392131900718X
language
English
LU publication?
yes
id
358cf70b-0fd8-4ee3-9966-fdbda842a1da
date added to LUP
2020-04-14 14:08:33
date last changed
2024-03-20 08:47:59
@article{358cf70b-0fd8-4ee3-9966-fdbda842a1da,
  abstract     = {{<p>We have been investigating populations of cataclysmic variables (CVs) in a set of more than 300 globular cluster (GC) models evolved with themoccacode.[-120pt] One of the main questions we have intended to answer is whether most CVs in GCs are dynamically formed or not. Contrary to what has been argued for a long time, we found that dynamical destruction of primordial CV progenitors is much stronger in GCs than dynamical formation of CVs. In particular, we found that, on average, the detectable CV population is predominantly composed of CVs formed via a typical common envelope phase (â 70 per cent). However, core-collapsed models tend to have higher fractions of bright CVs than non-core-collapsed ones, which suggests then that the formation of CVs is indeed slightly favoured through strong dynamical interactions in core-collapsed GCs, due to the high stellar densities in their cores.</p>}},
  author       = {{Belloni, Diogo and Giersz, Mirek and Sandoval, Liliana E.Rivera and Askar, Abbas and Ciecielag, Pawel}},
  issn         = {{1743-9213}},
  keywords     = {{binaries: general; cataclysmic variables; globular clusters: general; methods: numerical; novae}},
  language     = {{eng}},
  number       = {{351}},
  pages        = {{404--407}},
  publisher    = {{Cambridge University Press}},
  series       = {{Proceedings of the International Astronomical Union}},
  title        = {{Are most Cataclysmic Variables in Globular Clusters dynamically formed}},
  url          = {{http://dx.doi.org/10.1017/S174392131900718X}},
  doi          = {{10.1017/S174392131900718X}},
  volume       = {{14}},
  year         = {{2019}},
}