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
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Short-period fluctuations in the radial velocity of Antares A |
| dc.title.alternative.spa.fl_str_mv |
Fluctuaciones de corta duración en la velocidad radial de Antares A |
| title |
Short-period fluctuations in the radial velocity of Antares A |
| spellingShingle |
Short-period fluctuations in the radial velocity of Antares A Red Supergiant Stars Spectroscopy Radial Velocity Spectral Variations Física |
| title_short |
Short-period fluctuations in the radial velocity of Antares A |
| title_full |
Short-period fluctuations in the radial velocity of Antares A |
| title_fullStr |
Short-period fluctuations in the radial velocity of Antares A |
| title_full_unstemmed |
Short-period fluctuations in the radial velocity of Antares A |
| title_sort |
Short-period fluctuations in the radial velocity of Antares A |
| dc.creator.fl_str_mv |
Díaz Caballero, Daniel Felipe |
| dc.contributor.advisor.none.fl_str_mv |
Oostra Van Noppen, Benjamín |
| dc.contributor.author.none.fl_str_mv |
Díaz Caballero, Daniel Felipe |
| dc.contributor.jury.none.fl_str_mv |
Sabogal Martínez, Beatriz Eugenia |
| dc.subject.keyword.eng.fl_str_mv |
Red Supergiant Stars Spectroscopy Radial Velocity Spectral Variations |
| topic |
Red Supergiant Stars Spectroscopy Radial Velocity Spectral Variations Física |
| dc.subject.themes.spa.fl_str_mv |
Física |
| description |
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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2024 |
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2024-01-17T13:11:24Z |
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2024-01-17T13:11:24Z |
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2024-01-16 |
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Trabajo de grado - Pregrado |
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info:eu-repo/semantics/bachelorThesis |
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https://hdl.handle.net/1992/73286 |
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instname:Universidad de los Andes |
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reponame:Repositorio Institucional Séneca |
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eng |
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eng |
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Astrosurf (2010). IRIS 5.59. http://www.astrosurf.com/buil/iris-software.html. Astrosurf (2021). ISIS 6.1.1. http://www.astrosurf.com/buil/isis-software.html. Carroll, B. W. and Ostlie, D. A. (2007). An Introduction to Modern Astrophysics. 2nd edition. Kudritzki, R. P. and Reimers, D. (1978). On the absolute scale of mass-loss in red giants. II. Circumstellar absorption lines in the spectrum of alpha Sco B and mass- loss of alpha Sco A. , 70:227–239. Lunt, J. (1916). On the orbits of the spectroscopic binaries alpha orionis and alpha scorpii. The Astrophysical Journal, 44:250. Massey, P. (2003). Observational constraints on massive star evolution. In van der Hucht, K., Herrero, A., and Esteban, C., editors, A Massive Star Odyssey: From Main Sequence to Supernova, volume 212, page 316. Ohnaka, K., Weigelt, G., and Hofmann, K.-H. (2017). Vigorous atmospheric motion in the red supergiant star antares. Nature, 548(7667):310–312. S. D’Odorico, M. Ghigo, and D. Ponz (1987). An Atlas of the Thorium-Argon Spectrum for the ESO Echelle Spectrograph in the λλ3400−9000Å Region. European Southern Observatory. Smith, M. A., Patten, B. M., and Goldberg, L. (1989). Radial-velocity variations in alpha ori, alpha sco, and alpha her. The Astronomical Journal, 98:2233. Spencer Jones, H. (1928). The radial velocity variations of α Orionis and α Scorpii. , 88:660. |
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Attribution-NonCommercial 4.0 International |
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49 páginas |
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Universidad de los Andes |
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Física |
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Facultad de Ciencias |
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Departamento de Física |
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Universidad de los Andes |
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Oostra Van Noppen, BenjamínDíaz Caballero, Daniel FelipeSabogal Martínez, Beatriz Eugenia2024-01-17T13:11:24Z2024-01-17T13:11:24Z2024-01-16https://hdl.handle.net/1992/73286instname:Universidad de los Andesreponame:Repositorio Institucional Sénecarepourl:https://repositorio.uniandes.edu.co/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.Utilizando el nuevo espectrógrafo ESPARTACO 2, buscamos variaciones espectrales en Antares A, una estrella supergigante roja ubicada en la constelación de Escorpio. Esta estrella, estando en las últimas etapas de la evolución estelar, presenta fluctuaciones en su velocidad radial, lo que puede ser detectado midiendo el corrimiento en las líneas espectrales por efecto Doppler. Analizando un total de 73 espectros tomados utilizando ESPARTACO 2 entre Agosto y Octubre de 2023, identificamos la presencia de fluctuaciones de corta duración en la velocidad radial de Antares A. También implementamos algorítmos de Python para automáticamente encontrar líneas de absorción y emisión en los espectros, al igual que para determinar las longitudes de onda observadas.FísicoPregrado49 páginasapplication/pdfengUniversidad de los AndesFísicaFacultad de CienciasDepartamento de FísicaAttribution-NonCommercial 4.0 Internationalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Short-period fluctuations in the radial velocity of Antares AFluctuaciones de corta duración en la velocidad radial de Antares ATrabajo de grado - Pregradoinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_7a1fTexthttp://purl.org/redcol/resource_type/TPRed Supergiant StarsSpectroscopyRadial VelocitySpectral VariationsFísicaAstrosurf (2010). IRIS 5.59. http://www.astrosurf.com/buil/iris-software.html.Astrosurf (2021). ISIS 6.1.1. http://www.astrosurf.com/buil/isis-software.html.Carroll, B. W. and Ostlie, D. A. (2007). An Introduction to Modern Astrophysics. 2nd edition.Kudritzki, R. P. and Reimers, D. (1978). On the absolute scale of mass-loss in red giants. II. Circumstellar absorption lines in the spectrum of alpha Sco B and mass- loss of alpha Sco A. , 70:227–239.Lunt, J. (1916). On the orbits of the spectroscopic binaries alpha orionis and alpha scorpii. The Astrophysical Journal, 44:250.Massey, P. (2003). Observational constraints on massive star evolution. In van der Hucht, K., Herrero, A., and Esteban, C., editors, A Massive Star Odyssey: From Main Sequence to Supernova, volume 212, page 316.Ohnaka, K., Weigelt, G., and Hofmann, K.-H. (2017). Vigorous atmospheric motion in the red supergiant star antares. Nature, 548(7667):310–312.S. D’Odorico, M. Ghigo, and D. Ponz (1987). An Atlas of the Thorium-Argon Spectrum for the ESO Echelle Spectrograph in the λλ3400−9000Å Region. European Southern Observatory.Smith, M. A., Patten, B. M., and Goldberg, L. (1989). Radial-velocity variations in alpha ori, alpha sco, and alpha her. The Astronomical Journal, 98:2233.Spencer Jones, H. (1928). 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