NOAO >   Observing Info >   Approved Programs >   2013B-0328

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Proposal Information for 2013B-0328


PI: Noel D. Richardson, Universite de Montreal, richardson@astro.umontreal.ca
Address: Physique, C.P. 6128, Succ. Centre-Ville, Montreal, QC H3C3J7, Canada

CoI: Douglas Gies, Georgia State University
CoI: Ted Gull, NASA Goddard
CoI: Anthony Moffat, Universite de Montreal
CoI: Nicole St-Louis, Universite de Montreal

Title: Orbital Variability of \eta Carinae

Abstract: We propose to obtain weekly spectra of \eta Carinae in order to document the systemic variability with respect to the orbital geometry. The orbit is long (5.5 years), and our previous SMARTS and NOAO programs (started in 2008) have documented well the line profile variations of the system. With a full orbit of coverage (obtained through this proposal through 2014B), we will have the largest data set available in order to find spectroscopic evidence of the companion star that has eluded observers. The CTIO 1.5 m and echelle spectrograph provides the only resource in the southern hemisphere to study the H(alpha) transition of the star, as this line saturates all other publicly available spectrographs in the southern hemisphere.


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NOAO >   Observing Info >   Approved Programs >   2013B-0328

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