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Featured researches published by K. Davidson.


COSMIC EXPLOSIONS: Tenth Astrophysics Conference | 2001

Variability in η Car’s circumstellar nebula

Nathan Smith; Jon A. Morse; K. Davidson; Roberta M. Humphreys; Robert D. Gehrz

We discuss recent HST imaging of η Carinae obtained in near-UV and optical light with WFPC2 and in the near-infrared with NICMOS. Comparison with images obtained at earlier epochs reveals non-uniform photometric variations in the light from the many gas and dust condensations, as well as morphological changes in the inner regions of the nebula. During this same time period, the central object has brightened considerably at all wavelengths, and we discuss the relationship between the brightening of the central star and the variations in the surrounding nebula.


Astronomy and Astrophysics | 2005

A spectroscopic event of η Car viewed from different directions: The data and first results

Otmar Stahl; Kerstin Weis; Dominik J. Bomans; K. Davidson; Theodore R. Gull; Roberta M. Humphreys


Astronomy and Astrophysics | 2001

New forbidden and fluorescence Fe III lines identified in HST spectra of eta Carinae

Sveneric Johansson; Torgil Zethson; Henrik Hartman; J-O Ekberg; Kazunori Ishibashi; K. Davidson; T. R. Gull


Archive | 1999

HST/STIS Observations of the Star During Its Recent Event

K. Davidson; K. Ishibashi; Theodore R. Gull; Roberta M. Humphreys


Archive | 1999

Eta Carinae: The Central Star

D. John Hillier; K. Davidson; K. Ishibashi; Theodore R. Gull


Astronomy and Astrophysics | 1999

STRANGE VELOCITIES IN THE EQUATORIAL EJECTA OF ETA CARINAE

Torgil Zethson; Sveneric Johansson; K. Davidson; Roberta M. Humphreys; K. Ishibashi; D. Ebbets


Archive | 1994

Circumstellar Media in the Late Stages of Stellar Evolution: HST images of Eta Carinae

Dennis C. Ebbets; Harry W. Garner; Richard L. White; K. Davidson; Eliot M. Malumuth; Nolan R. Walborn


Archive | 2009

High Excitation Emission Lines in the Close Environment of eta Carinae

Andrea Mehner; K. Davidson; Roberta M. Humphreys


Archive | 2005

A Spectroscopic Event Viewed from Different Directions

Otmar Stahl; Kerstin Weis; Dominik J. Bomans; K. Davidson; Roberta M. Humphreys; Theodore R. Gull


Bulletin of the American Astronomical Society | 2001

The Strontium Filament within the Homunculus of Eta Carinae

T. R. Gull; Henrik Hartman; Torgil Zethson; Sveneric Johansson; Kazunori Ishibashi; K. Davidson

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Theodore R. Gull

The Catholic University of America

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Nolan R. Walborn

Space Telescope Science Institute

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