Short-period fluctuations in the radial velocity of Antares A
Using the new ESPARTACO 2 spectrograph, we searched for spectral variations in Antares A, a red supergiant star located in the constellation of Scorpius. This star, being in the late stages of stellar evolution, presents fluctuations in its radial velocity, which can be detected by measuring the Dop...
- Autores:
-
Díaz Caballero, Daniel Felipe
- Tipo de recurso:
- Trabajo de grado de pregrado
- Fecha de publicación:
- 2024
- Institución:
- Universidad de los Andes
- Repositorio:
- Séneca: repositorio Uniandes
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.uniandes.edu.co:1992/73286
- Acceso en línea:
- https://hdl.handle.net/1992/73286
- Palabra clave:
- Red Supergiant Stars
Spectroscopy
Radial Velocity
Spectral Variations
Física
- Rights
- openAccess
- License
- Attribution-NonCommercial 4.0 International
| Summary: | Using the new ESPARTACO 2 spectrograph, we searched for spectral variations in Antares A, a red supergiant star located in the constellation of Scorpius. This star, being in the late stages of stellar evolution, presents fluctuations in its radial velocity, which can be detected by measuring the Doppler shift in spectral lines. Analyzing a total of 73 spectra taken using ESPARTACO 2 between August and October of 2023, we identified the presence of short-period fluctuations in the radial velocity of Antares A. We also implemented Python algorithms to automatically find absorption and emission lines in the spectra, as well as to determine observed wavelengths. |
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