Long-term CCD monitoring of ER UMa-type variable DDE 48 in Vulpecula
Active Dates: July 21, 2017 – Oct. 31, 2017
Abstract:
The campaign aims to study the long-term behavior of the cataclysmic variable DDE 48 in Vulpecula, an ER UMa subtype of dwarf novae. DDE 48 exhibits superoutbursts to magnitude V=15.4 approximately once a month, with several normal outbursts between the superoutbursts.
Justification:
1) To study the long-term behavior (determine the supercycle length and the exact number of normal outbursts per supercycle); 2) To measure the orbital period and to follow the evolution of superhumps period during the superoutbursts.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| DDE 48 | 15.30 | UGER+UGZ |
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: Denis Denisenko; Imported Campaign (Alert Notice #588)