High-resolution, near-infrared observations of B[e] supergiants
B[e] supergiants stars are surrounded by disks formed from material released from the central object. To trace the properties of these disks, diverse emission features in the optical and near-infrared can be used. CO band emission is particularly valuable, because it defines the transition region be...
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2021
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/167789 |
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I19-R120-10915-167789 |
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I19-R120-10915-1677892024-07-04T20:03:05Z http://sedici.unlp.edu.ar/handle/10915/167789 High-resolution, near-infrared observations of B[e] supergiants Arias, María Laura Vallverdú, Rodolfo Enrique Torres, Andrea Fabiana Kraus, M. 2021 2024-07-04T18:15:07Z en Ciencias Astronómicas stars: early-type circumstellar matter stars: emission-line, Be B[e] supergiants stars are surrounded by disks formed from material released from the central object. To trace the properties of these disks, diverse emission features in the optical and near-infrared can be used. CO band emission is particularly valuable, because it defines the transition region between the atomic and molecular gas. We have recently started a campaign to obtain high-resolution near-infrared spectra for B[e] supergiant stars with confirmed CO emission. In this work, we present GEMINI/IGRINS spectra of CD-57 3107 and HD 62 623 and the physical parameters of their molecular disks obtained from detailed modeling of their CO band emission. Moreover, we report on the detection of 13CO emission in both stars, reinforcing the evolved nature of these objects. Las estrellas supergigantes B[e] están rodeadas por discos formados por material eyectado por la estrella central. Para describir las propiedades de estos discos, pueden usarse distintos trazadores en las regiones espectrales del óptico y del infrarrojo. La emisión molecular de CO es particularmente valiosa, ya que define la región de transición entre el gas atómico y el molecular. Recientemente, hemos comenzado con una campaña de observación, para obtener espectros de alta resolución en el infrarrojo cercano de una muestra de estrellas B[e] supergigantes con emisión molecular de CO confirmada. En este trabajo, presentamos espectros obtenidos con GEMINI/IGRINS de CD-57 3107 y HD 62 623 y los parámetros físicos de sus discos moleculares que derivamos a partir del modelado detallado de su emisión en CO. Además, reportamos la detección de emisión de 13CO en ambos espectros, reforzando la hipótesis de la naturaleza evolucionada de estos objetos. 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 104-106 |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas stars: early-type circumstellar matter stars: emission-line, Be |
| spellingShingle |
Ciencias Astronómicas stars: early-type circumstellar matter stars: emission-line, Be Arias, María Laura Vallverdú, Rodolfo Enrique Torres, Andrea Fabiana Kraus, M. High-resolution, near-infrared observations of B[e] supergiants |
| topic_facet |
Ciencias Astronómicas stars: early-type circumstellar matter stars: emission-line, Be |
| description |
B[e] supergiants stars are surrounded by disks formed from material released from the central object. To trace the properties of these disks, diverse emission features in the optical and near-infrared can be used. CO band emission is particularly valuable, because it defines the transition region between the atomic and molecular gas. We have recently started a campaign to obtain high-resolution near-infrared spectra for B[e] supergiant stars with confirmed CO emission. In this work, we present GEMINI/IGRINS spectra of CD-57 3107 and HD 62 623 and the physical parameters of their molecular disks obtained from detailed modeling of their CO band emission. Moreover, we report on the detection of 13CO emission in both stars, reinforcing the evolved nature of these objects. |
| format |
Articulo Articulo |
| author |
Arias, María Laura Vallverdú, Rodolfo Enrique Torres, Andrea Fabiana Kraus, M. |
| author_facet |
Arias, María Laura Vallverdú, Rodolfo Enrique Torres, Andrea Fabiana Kraus, M. |
| author_sort |
Arias, María Laura |
| title |
High-resolution, near-infrared observations of B[e] supergiants |
| title_short |
High-resolution, near-infrared observations of B[e] supergiants |
| title_full |
High-resolution, near-infrared observations of B[e] supergiants |
| title_fullStr |
High-resolution, near-infrared observations of B[e] supergiants |
| title_full_unstemmed |
High-resolution, near-infrared observations of B[e] supergiants |
| title_sort |
high-resolution, near-infrared observations of b[e] supergiants |
| publishDate |
2021 |
| url |
http://sedici.unlp.edu.ar/handle/10915/167789 |
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AT ariasmarialaura highresolutionnearinfraredobservationsofbesupergiants AT vallverdurodolfoenrique highresolutionnearinfraredobservationsofbesupergiants AT torresandreafabiana highresolutionnearinfraredobservationsofbesupergiants AT krausm highresolutionnearinfraredobservationsofbesupergiants |
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1807223565719699456 |