The evolutionary status of eta Car based on historical and modern optical and infrared photometry |
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| Authors: | A M van Genderen M de Groot P S The |
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| Institution: | (1) Leiden Observatory, Leiden, Netherlands;(2) Armagh Observatory, Armagh, UK;(3) Astronomical Institute, Amsterdam |
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| Abstract: | We present a photometric study of the luminous early-type star  Car. The star's secular brightness increase is due largely to the expansion of the Homunculus. Car is a LBV with a possible B0.5V companion. The combined effect of Balmer-line emission, and of warm and cold dust radiation explains the star's other light variations. |
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