Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2402.05686 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866917591458512896 |
|---|---|
| author | Chen, Zhuo Ivanova, Natalia |
| author_facet | Chen, Zhuo Ivanova, Natalia |
| contents | Luminous red novae (LRNe) and their connection to common envelope evolution (CEE) remain elusive in astrophysics. Here, we present a radiation hydrodynamic model capable of simulating the light curves of material ejected during a CEE. For the first time, the radiation hydrodynamic model incorporates complete recombination physics for hydrogen and helium. The radiation hydrodynamic equations are solved with Guangqi. With time-independent ejecta simulations, we show that the peaks in the light curves are attributed to radiation-dominated ejecta, while the extended plateaus are produced by matter-dominated ejecta. To showcase our model's capability, we fit the light curve of AT2019zhd. The central mass object of $6M_{\odot}$ is assumed based on observations and scaling relations. Our model demonstrates that the ejecta mass of AT2019zhd falls within the range of $0.04M_{\odot}$ to $0.1M_{\odot}$. Additionally, we demonstrate that recombination energy and radiation force acceleration significantly impact the light curves, whereas dust formation has a limited effect during the peak and plateau phases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_05686 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Bridging the gap between luminous red novae and common envelope evolution: the role of recombination energy and radiation force Chen, Zhuo Ivanova, Natalia Solar and Stellar Astrophysics High Energy Astrophysical Phenomena Luminous red novae (LRNe) and their connection to common envelope evolution (CEE) remain elusive in astrophysics. Here, we present a radiation hydrodynamic model capable of simulating the light curves of material ejected during a CEE. For the first time, the radiation hydrodynamic model incorporates complete recombination physics for hydrogen and helium. The radiation hydrodynamic equations are solved with Guangqi. With time-independent ejecta simulations, we show that the peaks in the light curves are attributed to radiation-dominated ejecta, while the extended plateaus are produced by matter-dominated ejecta. To showcase our model's capability, we fit the light curve of AT2019zhd. The central mass object of $6M_{\odot}$ is assumed based on observations and scaling relations. Our model demonstrates that the ejecta mass of AT2019zhd falls within the range of $0.04M_{\odot}$ to $0.1M_{\odot}$. Additionally, we demonstrate that recombination energy and radiation force acceleration significantly impact the light curves, whereas dust formation has a limited effect during the peak and plateau phases. |
| title | Bridging the gap between luminous red novae and common envelope evolution: the role of recombination energy and radiation force |
| topic | Solar and Stellar Astrophysics High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2402.05686 |