Geneva Photometry of Eta Car (van Genderen+ 1999)

Details Geneva Photometry of Eta Car (van Genderen+ 1999) Geneva Photometry of Eta Car (van Genderen+ 1999)

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ycat..33430847v&link_type=abstract

VizieR On-line Data Catalog: J/A+A/343/847. Originally published in: 1999A&A...343..847V

Computer Science

Stars: Variable, Photometry: Geneva

Scientific paper

We discuss 24yr of optical photometry of η Carinae, among which new Geneva photometry made between 1994 and 1998. Various conclusions from our previous photometric studies are confirmed. The core hides a normal S Dor variable (or LBV): it shows light variations on a time scale of 1-4yr, with superimposed micro oscillations whose quasi-period indicates a temperature in the order of 22000K. Therefore, a more complicated model for η Car is necessary to explain its extraordinary appearance and phenomena exhibited in the past and at present.
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