Rest et al. reply

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: Pontifica Universidad Catolica, Avenida Vicuna Mackenna 4860, Santiago 22, Chile
K. Mandel: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street

Nature, 2012, vol. 486, issue 7403, E1-E2

Abstract: Abstract Replying to K. Davidson & R. M. Humphreys Nature486,http://dx.doi.org/10.1038/nature11166(2012). In our Letter1 reporting the light echoes of η Carinae we analysed the spectral characteristics of η Carinae during the Great Eruption of the mid-1800s, and found the line content to be similar to that of G supergiant stars. This we interpret as evidence that η Carinae’s Great Eruption was not a typical luminous blue variable (LBV) outburst, because spectra similar to those of F and A supergiant stars, earlier and hotter than G-type stars, are observed in LBV eruptions of all kinds, in agreement with theoretical predictions. Davidson & Humphreys2 object that our spectral type and temperature estimate are not sufficiently robust, and that the spectral features are in agreement with their theoretical predictions.

Date: 2012
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DOI: 10.1038/nature11167

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