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Near-infrared evidence for a sudden temperature increase in Eta Carinae
| Indexado |
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| DOI | 10.1051/0004-6361/201322729 | ||||
| Año | 2014 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Abstract
Conclusions. We suggest that the changing near-IR emission may be caused by variability in optically thick bremsstrahlung emission. Periastron passages play an important role in the observed excess near-IR emission after 1998 and the long-term color evolution. We thus propose the hypothesis that angular momentum transfer (via tidal acceleration) during periastron passages leads to sudden changes in eta Car's atmosphere resulting in a long-term decrease in the mass-loss rate.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Mehner, Andrea | Mujer |
ESO - Chile
European Southern Observatory Santiago - Chile |
| 2 | Ishibashi, Kazunori | Hombre |
Nagoya Univ - Japón
Nagoya University - Japón |
| 3 | Whitelock, Patricia A. | Mujer |
S African Astron Observ - República de Sudáfrica
UNIV CAPE TOWN - República de Sudáfrica South African Astronomical Observatory - República de Sudáfrica University of Cape Town - República de Sudáfrica |
| 4 | Nagayama, T. | Hombre |
Nagoya Univ - Japón
Nagoya University - Japón |
| 5 | Feast, Michael | Hombre |
S African Astron Observ - República de Sudáfrica
UNIV CAPE TOWN - República de Sudáfrica South African Astronomical Observatory - República de Sudáfrica University of Cape Town - República de Sudáfrica |
| 6 | van Wyk, Francois | - |
S African Astron Observ - República de Sudáfrica
South African Astronomical Observatory - República de Sudáfrica |
| 7 | de Wit, Willem-Jan | Hombre |
ESO - Chile
European Southern Observatory Santiago - Chile |
| Fuente |
|---|
| National Research Foundation |
| National Research Foundation of Korea |
| Japan Society for the Promotion of Science |
| Grants-in-Aid for Scientific Research |
| Ministry of Education, Culture, Sports, Science and Technology |
| South African National Research Foundation |
| Nagoya University |
| Marie Curie Actions of the European Commission (FP7-COFUND) |
| South African National Research Foundation (NRF) |
| Global Center of Excellence Program of Nagoya University from the Japan Society for the Promotion of Science |
| Agradecimiento |
|---|
| This paper is based on observations made at the South African Astronomical Observatory (SAAO). A.M. was co-funded under the Marie Curie Actions of the European Commission (FP7-COFUND). K.I. was supported by the Global Center of Excellence Program of Nagoya University from the Japan Society for the Promotion of Science and the Ministry of Education, Culture, Sports, Science and Technology. PAW and MWF acknowlede the receipt of a research grant from the South African National Research Foundation (NRF). We thank Jose Groh, Mikio Kurita, Kris Davidson, and Stan Owocki for valuable discussions. |
| This paper is based on observations made at the South African Astronomical Observatory (SAAO). A.M. was co-funded under the Marie Curie Actions of the European Commission (FP7-COFUND). K.I. was supported by the Global Center of Excellence Program of Nagoya University from the Japan Society for the Promotion of Science and the Ministry of Education, Culture, Sports, Science and Technology. PAW and MWF acknowledge the receipt of a research grant from the South African National Research Foundation (NRF). We thank Jose Groh, Mikio Kurita, Kris Davidson, and Stan Owocki for valuable discussions. |
