Photometric observations of the eta Carinae 2009.0 spectroscopic event

Howard Landes, Michael Fitzgerald

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    We have observed Carinae over 34 nights between 2009 January 4 and 2009 March 27 covering the estimated timeframe for a predicted spectroscopic event related to a suspected binary system concealed within the homunculus nebula. A photometric minimum feature was confirmed to be periodic and comparison to a previous event indicated that the period to within our error was 2022.6 +/- 1.0d. Using the E-region standard star system, the apparent V magnitudes determined for the local comparison stars were HD 303308 8.14 +/- 0.02, HD 93205 7.77 +/- 0.03, and HD 93162 8.22 +/- 0.05. The latter star was found to be dimmer than previously reported.
    Original languageEnglish
    Pages (from-to)374 - 377
    Number of pages4
    JournalPublications of the Astronomical Society of Australia
    Issue number3
    Publication statusPublished - 2010

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