Reply To: b Per radial velocity

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Kevin Gurney

I haven’t been around teh forum for while so just seen Robin’s post…

I also took some hi res spectra of b Per but, similarly, missed the eclipse as such. Mine are shown as a phase plot and include some ‘historical’ data from 2018, through 2020 (but inlude Decmber last year and Jan this year). I used longer exposures (1 hr) and used the Ha line and water absorption features to determine the shifts. As mine are over an extended period I also subtracted any long period orbital velocity with the wide companion.