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THE Hα VARIATIONS OF η CARINAE DURING THE 2009.0 SPECTROSCOPIC EVENT
We report on Hα spectroscopy of the 2009.0 spectroscopic event of η Carinae collected via SMARTS observations using the Cerro Tololo Interamerican Observatory 1.5 m telescope and echelle spectrograph. Our observations were made almost every night over a two-month interval around the predicted minimum of η Car. We observed a …