A NIR spectral sequence of O-type supergiants
The study of spectral morphology is a powerful tool for understanding the fundamental properties of stars. The spectral classification scheme for O stars was revisited and a new set of spectral standard stars was proposed for all sub-types between 02 and BO and for all luminosity classes. We are wor...
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2021
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/166335 |
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I19-R120-10915-1663352024-05-23T20:02:26Z http://sedici.unlp.edu.ar/handle/10915/166335 A NIR spectral sequence of O-type supergiants Giudici Michilini, Federico Nicolás Ferrero Sosa, Gabriel Antonio Gamen, Roberto Claudio Morrell, Nidia Irene Barbá, Rodolfo Héctor 2021 2024-05-23T13:22:58Z en Ciencias Astronómicas atlases stars: early-type stars: massive The study of spectral morphology is a powerful tool for understanding the fundamental properties of stars. The spectral classification scheme for O stars was revisited and a new set of spectral standard stars was proposed for all sub-types between 02 and BO and for all luminosity classes. We are working on the construction of a spectral atlas with high quality observations between 0.85 — 2.5 pm. Observations for this project have begun seven years ago, and they are carried out with the GNIRS (Gemini Observatory) and FIRE (Las Campanas Observatory) spectrographs. We present here a second batch of results, including the spectra of a complete temperature sequence of supergiant standard stars in the J, H and A'-bands. The analysis of this data set implies that it is possible to define spectral classification criteria using the He I and He π lines present in it. El estudio de la morfología espectral es una herramienta poderosa para comprender las propiedades fundamentales de las estrellas. El esquema de clasificación espectral para las estrellas O se revisó y se propuso un nuevo conjunto de estrellas estándar espectrales para todos los subtipos entre 02 y BO y para todas las clases de luminosidad. Estamos trabajando en la construcción de un atlas espectral con observaciones de alta calidad entre 0.85 — 2.5 pm. Las observaciones para este proyecto se iniciaron hace siete años y se realizan con los espectrógrafos GNIRS (Observatorio Gemini) y FIRE (Observatorio Las Campanas). Presentamos aquí un segundo lote de resultados, que incluye los espectros de una secuencia de temperatura completa de estrellas estándar supergigantes en las bandas J, H y K. Del análisis de los datos se desprende que es posible definir criterios de clasificación espectral utilizando líneas de He I y He π presentes en los mismos. Asociación Argentina de Astronomía Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 74-76 |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas atlases stars: early-type stars: massive |
| spellingShingle |
Ciencias Astronómicas atlases stars: early-type stars: massive Giudici Michilini, Federico Nicolás Ferrero Sosa, Gabriel Antonio Gamen, Roberto Claudio Morrell, Nidia Irene Barbá, Rodolfo Héctor A NIR spectral sequence of O-type supergiants |
| topic_facet |
Ciencias Astronómicas atlases stars: early-type stars: massive |
| description |
The study of spectral morphology is a powerful tool for understanding the fundamental properties of stars. The spectral classification scheme for O stars was revisited and a new set of spectral standard stars was proposed for all sub-types between 02 and BO and for all luminosity classes. We are working on the construction of a spectral atlas with high quality observations between 0.85 — 2.5 pm. Observations for this project have begun seven years ago, and they are carried out with the GNIRS (Gemini Observatory) and FIRE (Las Campanas Observatory) spectrographs. We present here a second batch of results, including the spectra of a complete temperature sequence of supergiant standard stars in the J, H and A'-bands. The analysis of this data set implies that it is possible to define spectral classification criteria using the He I and He π lines present in it. |
| format |
Articulo Articulo |
| author |
Giudici Michilini, Federico Nicolás Ferrero Sosa, Gabriel Antonio Gamen, Roberto Claudio Morrell, Nidia Irene Barbá, Rodolfo Héctor |
| author_facet |
Giudici Michilini, Federico Nicolás Ferrero Sosa, Gabriel Antonio Gamen, Roberto Claudio Morrell, Nidia Irene Barbá, Rodolfo Héctor |
| author_sort |
Giudici Michilini, Federico Nicolás |
| title |
A NIR spectral sequence of O-type supergiants |
| title_short |
A NIR spectral sequence of O-type supergiants |
| title_full |
A NIR spectral sequence of O-type supergiants |
| title_fullStr |
A NIR spectral sequence of O-type supergiants |
| title_full_unstemmed |
A NIR spectral sequence of O-type supergiants |
| title_sort |
nir spectral sequence of o-type supergiants |
| publishDate |
2021 |
| url |
http://sedici.unlp.edu.ar/handle/10915/166335 |
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