| Autor: |
Otmar Stahl, B. Wolf, Th. Szeifert, F. J. Zickgraf |
| Rok vydání: |
2008 |
| Předmět: |
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| Zdroj: |
New Aspects of Magellanic Cloud Research ISBN: 9783540564324 |
| DOI: |
10.1007/3-540-56432-2_210 |
| Popis: |
During the past decade R 40 in the SMC has brightened in the visual range by about 0.5 magnitudes. Correlated with the brightening the spectral type has changed from B8Ia to A3Ia-O. This behaviour shows R 40 to be an LBV, the first one discovered in the SMC. During the past eight years we obtained extensive Stromgren photometry. R 40 was also observed in the IR range in the JHKL filter system. High resolution spectra were observed in Dec. 1991 and Jan. 1993 in the optical range at ESO with CASPEC at the 3.6m telescope and with our fiber-linked echelle spectrograph at the 2.2m telescope. In addition one high resolution LWP-IUE spectrum and one SWP and LWP low resolution spectrum were secured during the present outburst phase of R 40 |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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