Photometric Observations of the Eta Carinae 2009.0 Spectroscopic Event

Details Photometric Observations of the Eta Carinae 2009.0 Spectroscopic Event Photometric Observations of the Eta Carinae 2009.0 Spectroscopic Event

2009-12-13

arxiv.org/abs/0912.2557v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

5 pages,4 figures, 1 table

Scientific paper

We have observed Eta Carinae over 34 nights between 4th January 2009 and 27th March 2009 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 at 2022.6 +/-1.0 d. Using the E-region standard star system, the apparent V magnitudes determined for the local comparison stars were HD303308 8.14+/-0.02, HD 93205 7.77 +/-0.03 and HD93162 8.22 +/-0.05. The latter star was found to be dimmer than previously reported.

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