# Are most Cataclysmic Variables in Globular Clusters dynamically formed?

## TL;DR

This study uses over 300 globular cluster models to determine that most cataclysmic variables are formed through primordial evolution rather than dynamical interactions, with some influence from core collapse.

## Contribution

It provides the first comprehensive analysis showing primordial formation dominates CV populations in globular clusters, challenging previous assumptions.

## Key findings

- Primordial CV formation accounts for over 70% of detectable CVs.
- Core-collapsed clusters have higher fractions of bright CVs.
- Dynamical destruction of primordial CV progenitors is more significant than dynamical formation.

## Abstract

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 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 (> 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.