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OHANA: Eta Carinae's Variability in the Near-IR

Published online by Cambridge University Press:  23 January 2015

Andrea Mehner ,
Willem-Jan de Wit ,
Thomas Rivinius  and
the Paranal VLTI group
Andrea Mehner
Affiliation:
European Southern Observatory, Alonso de Cordova 3107, Vitacura, Chile email: [email protected]
Willem-Jan de Wit
Affiliation:
European Southern Observatory, Alonso de Cordova 3107, Vitacura, Chile email: [email protected]
Thomas Rivinius
Affiliation:
European Southern Observatory, Alonso de Cordova 3107, Vitacura, Chile email: [email protected]
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Abstract

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Near-IR photometry of η Car since 1972 revealed a long-term trend towards hotter temperatures and a cycloidal behavior of its near-IR colors around periastron passages. Both effects are likely triggered by the companion. We used VLTI AMBER observations from 2004–2014 to investigate η Car's variabilities in the near-IR.

Keywords

stars: atmospheres(stars:) circumstellar matterstars: emission-lineBestars: individual (eta Carinae)stars: mass lossstars: windsoutflows
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 121 - 122
Copyright
Copyright © International Astronomical Union 2015 

References

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