Light echoes reveal an unexpectedly cool η Carinae during its nineteenth-century Great Eruption

A. Rest (), J. L. Prieto, N. R. Walborn, N. Smith, F. B. Bianco, R. Chornock, D. L. Welch, D. A. Howell, M. E. Huber, R. J. Foley, W. Fong, B. Sinnott, H. E. Bond, R. C. Smith, I. Toledo, D. Minniti and K. Mandel
Additional contact information
A. Rest: Space Telescope Science Institute, 3700 San Martin Drive
J. L. Prieto: Carnegie Observatories, 813 Santa Barbara Street
N. R. Walborn: Space Telescope Science Institute, 3700 San Martin Drive
N. Smith: Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, Arizona 85721, USA
F. B. Bianco: Las Cumbres Observatory Global Telescope Network
R. Chornock: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street
D. L. Welch: McMaster University, Hamilton, Ontario, L8S 4M1, Canada
D. A. Howell: Las Cumbres Observatory Global Telescope Network
M. E. Huber: Johns Hopkins University, Baltimore, 3400 North Charles Street, Maryland 21218, USA
R. J. Foley: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street
W. Fong: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street
B. Sinnott: McMaster University, Hamilton, Ontario, L8S 4M1, Canada
H. E. Bond: Space Telescope Science Institute, 3700 San Martin Drive
R. C. Smith: Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Colina el Pino S/N, La Serena, Chile
I. Toledo: ALMA, KM 121 CH 23, San Pedro de Atacama, II Region, Chile
D. Minniti: Pontificia Universidad Catolica de Chile, Santiago 22, Chile
K. Mandel: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street

Nature, 2012, vol. 482, issue 7385, 375-378

Abstract: Light echoes from the massive binary star η Carinae reveal it to have been much cooler than models suggest during its Great Eruption in 1840 but the cause of the eruption remains unknown.

Date: 2012
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DOI: 10.1038/nature10775

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