THE EVOLUTIONARY STATUS OF ETA-CAR BASED ON HISTORICAL AND MODERN OPTICAL AND INFRARED PHOTOMETRY

Authors
VANGENDEREN AM DEGROOT M THE PS
Citation
Am. Vangenderen et al., THE EVOLUTIONARY STATUS OF ETA-CAR BASED ON HISTORICAL AND MODERN OPTICAL AND INFRARED PHOTOMETRY, Space science reviews, 66(1-4), 1993, pp. 219-223
Citations number
10
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Space science reviews → ACNP
ISSN journal
00386308
Volume
66
Issue
1-4
Year of publication
1993
Pages
219 - 223
Database
ISI
SICI code
0038-6308(1993)66:1-4<219:TESOEB>2.0.ZU;2-1
Abstract
We present a photometric study of the luminous early-type star eta Car . The star's secular brightness increase is due largely to the expansi on of the Homunculus. Eta Car is a LBV with possible B0.5V companion. The combined effect of Balmer-line emission, and of warm and col dust radiation explains the star's other light variations.