# A revised historical light curve of Eta Carinae and the timing of close periastron encounters

@article{Smith2010ARH,
title={A revised historical light curve of Eta Carinae and the timing of close periastron encounters},
author={Nathan Smith and David J. Frew},
journal={Monthly Notices of the Royal Astronomical Society},
year={2010},
volume={415},
pages={2009-2019}
}
• Published 2010
• Physics
• Monthly Notices of the Royal Astronomical Society
The historical light curve of the 19th century ‘Great Eruption’ of"Carinae provides a striking record of the violent instabilities encountered by massive stars. In this paper, we report and analyse newly uncovered historical estimates of the visual brightness of"Car during its eruption,andwecorrectsomemistakesintheoriginalrecord.Therevisedhistoricallightcurve looks substantially different from previous accounts; it shows two brief precursor eruptions in 1838 and 1843 that resemble modern… Expand

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#### References

SHOWING 1-10 OF 70 REFERENCES
η Carinae's second eruption and the light curves of the η Carinae variables
• Physics
• 1999
Within the general class of highly unstable massive stars called luminous blue variables (LBVs), four stars have experienced "giant eruptions" during which the total luminosities of the starsExpand
PERIASTRON PASSAGE TRIGGERING OF THE 19TH CENTURY ERUPTIONS OF ETA CARINAE
• Physics
• 2009
We reconstruct the evolution of η Car in the last two centuries under the assumption that the two 19th century eruptions were triggered by periastron passages and through this reconstructionExpand
Luminous blue variable eruptions and related transients: diversity of progenitors and outburst properties
• Physics
• 2010
We present new light curves and optical spectra for a number of extragalactic optical transients or 'supernova impostors' related to giant eruptions of luminous blue variables (LBVs), and we provideExpand
The 5.52 Year Cycle of Eta Carinae: BeppoSAX Detection of Variable Hard (> 10 keV) X-Ray Emission
I have discovered spectroscopic variations correlated with the photometric near-infrared (NIR) light curve in η Carinae. The fading of the high-excitation lines is coincident with the peaks in theExpand
The periodicity of the η Carinae events
Extensive spectral observations of η Carinae over the last cycle, and particularly around the 2003.5 low-excitation event, have been obtained. The variability of both narrow and broad lines, whenExpand
Proper Motions in the Ejecta of η Carinae with a 50 Year Baseline
• Physics
• 1998
Observations of η Carinae from three separate epochs spanning a total of 50 years are used to measure the proper motions of several easily identifiable features in the Homunculus Nebula. OurExpand
Eta Carinae: a long period binary?
• Physics
• 1997
Abstract We present new observations of η Carinae, strongly suggesting that it is a binary system. High dispersion measurements of the broad Paγ emission line show periodic radial velocity variationsExpand
Multiple major outbursts from a restless luminous blue variable in NGC 3432
We present new photometric and spectroscopic observations of an unusual luminous blue variable (LBV) in NGC 3432, covering three major outbursts in 2008 October, 2009 April and 2009 November.Expand
Doppler tomography of the Little Homunculus: high‐resolution spectra of [Fe II]λ16 435 around Eta Carinae★
High-resolution spectra of [Fe II ] λ16435 around η Carinae provide powerful diagnostics of the geometry and kinematics of the 'Little Homunculus' (LH) growing inside the larger Homunculus nebula.Expand
Mass and Kinetic Energy of the Homunculus Nebula around η Carinae
We examine thermal infrared images of η Car at wavelengths from 4.8 to 25 μm obtained with the MIRAC3 camera system at the Magellan Observatory, and we conclude that η Car's circumstellar HomunculusExpand