Caracteristicas de discos debris en Enanas Blancas
Abstract: In the late ’80s an infrared excess (IR) around a white dwarf star (WD) was detected, which was attributed to the presence of a dusty circumstellar disk. In recent years, thanks to Spitzer, the number of WDs with excesses has increased significantly. In this contribution we present the mo...
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| Format: | publishedVersion |
| Language: | spa |
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Asociación Argentina de Astronomıa
2021
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| Online Access: | http://hdl.handle.net/11086/18980 |
| _version_ | 1801211959377395712 |
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| author | Saker, L Gómez, Mercedes Chavero, Carolina Andrea |
| author_facet | Saker, L Gómez, Mercedes Chavero, Carolina Andrea |
| author_sort | Saker, L |
| collection | Repositorio Digital Universitario |
| description | Abstract: In the late ’80s an infrared excess (IR) around a white dwarf star (WD) was detected, which was attributed to the presence of a dusty circumstellar disk. In recent years, thanks to Spitzer, the number of WDs with excesses has increased significantly. In this contribution we present
the modeling of the spectral energy distributions (SEDs) of a sample of 29 WDs having IR excesses. This model allows us to derive the mass and the internal and external radii of the dusty disk, for a given chemical composition. The location of this ring is compared with the Habitability
Zone (HZ) of each WD in the sample. In addition, the dimensions and masses of these rings are compared with those around main sequence stars, commonly known in the literature as debris disks. |
| format | publishedVersion |
| id | rdu-unc.18980 |
| institution | Universidad Nacional de Cordoba |
| language | spa |
| publishDate | 2021 |
| publisher | Asociación Argentina de Astronomıa |
| record_format | dspace |
| spelling | rdu-unc.189802024-05-31T15:43:49Z Caracteristicas de discos debris en Enanas Blancas Saker, L Gómez, Mercedes Chavero, Carolina Andrea Enanas blancas Excesos infrarrojos Discos de escombros Distribuciones espectrales de energía Abstract: In the late ’80s an infrared excess (IR) around a white dwarf star (WD) was detected, which was attributed to the presence of a dusty circumstellar disk. In recent years, thanks to Spitzer, the number of WDs with excesses has increased significantly. In this contribution we present the modeling of the spectral energy distributions (SEDs) of a sample of 29 WDs having IR excesses. This model allows us to derive the mass and the internal and external radii of the dusty disk, for a given chemical composition. The location of this ring is compared with the Habitability Zone (HZ) of each WD in the sample. In addition, the dimensions and masses of these rings are compared with those around main sequence stars, commonly known in the literature as debris disks. Resumen: A finales de la década de 1980 se detectó exceso infrarrojo (IR) alrededor de una estrella enana blanca (EB), el cual fue atribuido a la presencia de un disco circunestelar de polvo. En los últimos años gracias a Spitzer se amplió el número de EBs con excesos IR. En este trabajo se presenta el modelado de las distribuciones espectrales de energía (SEDs) de una muestra de 29 EBs que presentan excesos. Este modelo permite derivar la masa, el radio interno y el radio externo de estos discos de polvo, para una dada composición química. Se compara la ubicación de estos anillos con la Zona de Habitabilidad (ZH) de cada EB en la muestra analizada. Ademas, las dimensiones y masas de estos anillos son comparadas con aquellos en estrellas de secuencia principal, comúnmente conocidos en la literatura como discos debris o de escombros. Fil:Gómez,Mercedes Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina Fil: Chavero,Carolina Andrea Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. publishedVersion http://www.astronomiaargentina.org.ar/b56/BAAA56_v15_final.pdf publishedVersion Astronomía (incluye Astrofísica y Ciencias del Espacio) 2021-07-11T23:50:42Z 2021-07-11T23:50:42Z 2014 conferenceObject 0571-3285 0571-3285 http://hdl.handle.net/11086/18980 spa Attribution-NonCommercial-ShareAlike 4.0 International https://creativecommons.org/licenses/by-nc-sa/4.0/ Impreso; Electrónico y/o Digital Asociación Argentina de Astronomıa |
| spellingShingle | Enanas blancas Excesos infrarrojos Discos de escombros Distribuciones espectrales de energía Saker, L Gómez, Mercedes Chavero, Carolina Andrea Caracteristicas de discos debris en Enanas Blancas |
| title | Caracteristicas de discos debris en Enanas Blancas |
| title_full | Caracteristicas de discos debris en Enanas Blancas |
| title_fullStr | Caracteristicas de discos debris en Enanas Blancas |
| title_full_unstemmed | Caracteristicas de discos debris en Enanas Blancas |
| title_short | Caracteristicas de discos debris en Enanas Blancas |
| title_sort | caracteristicas de discos debris en enanas blancas |
| topic | Enanas blancas Excesos infrarrojos Discos de escombros Distribuciones espectrales de energía |
| url | http://hdl.handle.net/11086/18980 |
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