AAVSO Alert Notice 563: Observations requested for b Per December 2016 eclipse

Active Dates: Dec. 8, 2016 – Dec. 22, 2016


Abstract:

High time-resolution observations of the bright star b Persei are requested during the next predicted eclipse or transit of the third star across the system. Well-sampled light curves can provide timing data for the orbits with much greater precision than astrometry or spectroscopy alone.

Justification:

Long time-series observations of the January 2015 transit detected multiple dips in the light curve as the third star alternately transited the A and B components and the inner rotating system. We are trying to sort out whether the third star is blocked by the inner A-B pair or the A-B pair blocks the light of the third star in each eclipse.

Requested Data Types:

Photometry



Spectroscopy Lines:

No spectroscopy lines provided

Photometry Filters:

No photometry filters provided

Comparison Stars:

No comparison stars provided


Co-Authorship

Observers are not eligible for co-authorship.

Additional Observer Input:

Not provided

Additional Submission Location:

Not provided


Forum URL

N/A


Notes:

Principal Investigator: Dr. Donald F. Collins; Imported Campaign (Alert Notice #563)