Numerical Study of Colliding Winds in Massive Stars
We run a numerical experiment ejecting stellar winds in a very massive binary system measuring the properties of the resulting colliding wind structure and accreted mass onto the companion under different conditions. Colliding massive binaries interact and create a colliding wind structure with a sh...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-12-01
|
| Series: | Galaxies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4434/10/1/4 |
| _version_ | 1797480093147201536 |
|---|---|
| author | Amit Kashi Amir Michaelis |
| author_facet | Amit Kashi Amir Michaelis |
| author_sort | Amit Kashi |
| collection | DOAJ |
| description | We run a numerical experiment ejecting stellar winds in a very massive binary system measuring the properties of the resulting colliding wind structure and accreted mass onto the companion under different conditions. Colliding massive binaries interact and create a colliding wind structure with a shape that depends on the momentum ratio, orbital motion, distance between the stars, and other factors. We run simulations of a static LBV-WR binary and in each simulation abruptly varying the mass loss rate of the LBV from the fiducial value. The modified wind front propagates and interacts with the previous colliding wind structure, and modifies its shape. We calculate the emitted X-ray from the interaction and investigate the proprieties of the new shape. We derive the mass accretion rate onto the secondary, and find that it depends on the momentum ratio of the winds. We then add orbital velocity that reduces the mass accretion rate, a similar behaviour as the analytical estimates based on modified Bondi–Hoyle–Lyttleton. Creating a large set of simulations like those presented here can allow constraining parameters for specific colliding wind binaries and derive their stellar parameters and orbital solution. |
| first_indexed | 2024-03-09T21:55:11Z |
| format | Article |
| id | doaj.art-de27e656b30441cd81eb2be7dafce2c0 |
| institution | Directory Open Access Journal |
| issn | 2075-4434 |
| language | English |
| last_indexed | 2024-03-09T21:55:11Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Galaxies |
| spelling | doaj.art-de27e656b30441cd81eb2be7dafce2c02023-11-23T20:00:13ZengMDPI AGGalaxies2075-44342021-12-01101410.3390/galaxies10010004Numerical Study of Colliding Winds in Massive StarsAmit Kashi0Amir Michaelis1Department of Physics, Ariel University, Ariel 4070000, IsraelDepartment of Physics, Ariel University, Ariel 4070000, IsraelWe run a numerical experiment ejecting stellar winds in a very massive binary system measuring the properties of the resulting colliding wind structure and accreted mass onto the companion under different conditions. Colliding massive binaries interact and create a colliding wind structure with a shape that depends on the momentum ratio, orbital motion, distance between the stars, and other factors. We run simulations of a static LBV-WR binary and in each simulation abruptly varying the mass loss rate of the LBV from the fiducial value. The modified wind front propagates and interacts with the previous colliding wind structure, and modifies its shape. We calculate the emitted X-ray from the interaction and investigate the proprieties of the new shape. We derive the mass accretion rate onto the secondary, and find that it depends on the momentum ratio of the winds. We then add orbital velocity that reduces the mass accretion rate, a similar behaviour as the analytical estimates based on modified Bondi–Hoyle–Lyttleton. Creating a large set of simulations like those presented here can allow constraining parameters for specific colliding wind binaries and derive their stellar parameters and orbital solution.https://www.mdpi.com/2075-4434/10/1/4stars: winds, outflowsstars: massivestars: Wolf–Rayetbinaries: generalmethods: numerical |
| spellingShingle | Amit Kashi Amir Michaelis Numerical Study of Colliding Winds in Massive Stars Galaxies stars: winds, outflows stars: massive stars: Wolf–Rayet binaries: general methods: numerical |
| title | Numerical Study of Colliding Winds in Massive Stars |
| title_full | Numerical Study of Colliding Winds in Massive Stars |
| title_fullStr | Numerical Study of Colliding Winds in Massive Stars |
| title_full_unstemmed | Numerical Study of Colliding Winds in Massive Stars |
| title_short | Numerical Study of Colliding Winds in Massive Stars |
| title_sort | numerical study of colliding winds in massive stars |
| topic | stars: winds, outflows stars: massive stars: Wolf–Rayet binaries: general methods: numerical |
| url | https://www.mdpi.com/2075-4434/10/1/4 |
| work_keys_str_mv | AT amitkashi numericalstudyofcollidingwindsinmassivestars AT amirmichaelis numericalstudyofcollidingwindsinmassivestars |