Multicolor photometry of triple system b Per requested
Active Dates: Jan. 23, 2013 – Feb. 4, 2013
Abstract:
Dr. Bob Zavala (U.S. Naval Observatory, Flagstaff) has requested AAVSO assistance in obtaining multicolor photometry of the bright triple system b Per in order to prepare for and detect a possible eclipse of the AB components by the C component predicted for 2013 January 23. At 4.5V, b Per, which is also a radio source, is an excellent target for photoelectric photometrists and DSLR observers.
Justification:
The ellipsoidal variable star b Persei consists of a non-eclipsing close binary (A-B) with a 1.5-day orbital period within a hierarchical triple system (AB-C) with a 701-day orbit. Eclipses are important as they allow us to add light curve modeling to our arsenal of techniques for investigating the evolutionary state of the close binary components.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| b Per | 4.57 | EA+ELL |
Cadence: Not Specified Precision: 100 |
Not Requested |
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. Bob Zavala; Imported Campaign (Alert Notice #476)