Correction to Alert Notice 593
Active Dates: June 1, 2017 – Nov. 18, 2019
Abstract:
A campaign on the very long period VV Cep M2Iabe+B0/2Ve binary. The eclipse depth varies significantly in different bands, making it largely undetectable visually but encouraging CCD and DSLR photometry.
Justification:
The eclipse depth is large only in the U band (1.8 mag.) and decreases rapidly as we go to longer wavelengths: 0.45 in B and 0.1 in V. The eclipse is invisible in Rc and Ic where only the flux from the supergiant is present. High precision multicolor photometry (V and/or B filters preferred) every clear night is requested until at least one month after the eclipse is over (late 2019).
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| VV Cep | 4.88 | EA/GS+SRC |
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. Ernst Pollmann; Imported Campaign (Alert Notice #594)