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| DOI | 10.1093/MNRAS/STU1394 | ||||
| Año | 2014 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
A detailed study of the rare nearby quadruple system with a three-tier hierarchy is presented, contributing to the still scarce data on such multiples. We compute the first combined spectroscopic and interferometric orbit of HD 12889 with a period of 2.58 yr and eccentricity 0.77. This refers to the inner pair Aa, Ab in the quadruple system ADS 1652 which also contains the visual binary A, B with a known orbit of similar to 200 yr period and another companion, C (HD 12873), at a projected distance of 2500 au from A. Photometry of all components is provided. The multiple system is located at a distance of 44 pc and it is composed of main-sequence dwarfs with estimated masses of 0.74, 0.72, 0.57, and 0.78 solar masses for Aa, Ab, B and C, respectively. The orbits of Aa, Ab and A, B are likely coplanar.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Tokovinin, Andrei | Hombre |
Observatorio Interamericano del Cerro Tololo - Chile
Cerro Tololo Inter American Observatory - Chile |
| 2 | Gorynya, N. A. | - |
Russian Acad Sci - Rusia
Moscow MV Lomonosov State Univ - Rusia Institute of Astronomy of the Russian Academy of Sciences - Rusia Lomonosov Moscow State University - Rusia |
| 3 | MORRELL, NIDIA IRENE | Mujer |
Observatorio Las Campanas - Chile
Las Campanas Observatory - Chile Carnegie Observ - Chile |