Monitoring requested for 11 dwarf novae in support of HST observations in 2021-2022
Active Dates: Nov. 1, 2021 – Sept. 30, 2022
Abstract:
AAVSO observers' assistance is requested in monitoring 11 dwarf novae cataclysmic variables in support of observations with the Hubble Space Telescope (HST). The monitoring ensures observations are obtained during quiescence to avoid damaging the detectors of the Cosmic Origin Spectrograph due to exposure to too much light.
Justification:
Accreting white dwarfs are ideal for testing models of binary evolution and understanding the formation channels of gravitational wave sources. Observations are necessary to accurately measure their fundamental parameters, providing constraints on angular momentum loss mechanisms and connections to Type Ia Supernova explosions.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| UU Aql | 11.00 | UGSS |
Cadence: Not Specified Precision: 100 |
Not Requested |
| BMAM-V493 | 17.65 | EA |
Cadence: Not Specified Precision: 100 |
Not Requested |
| SDSS J154453.60+255348.8 | 16.00 | NL+E |
Cadence: Not Specified Precision: 100 |
Not Requested |
| V1239 Her | 13.70 | UGSU+E |
Cadence: Not Specified Precision: 100 |
Not Requested |
| CH UMa | 10.70 | UG |
Cadence: Not Specified Precision: 100 |
Not Requested |
| YZ LMi | 16.30 | UGSU/IBWD+E |
Cadence: Not Specified Precision: 100 |
Not Requested |
| GP Com | 15.70 | IBWD |
Cadence: Not Specified Precision: 100 |
Not Requested |
| RY Ser | 13.60 | UG |
Cadence: Not Specified Precision: 100 |
Not Requested |
| SDSS J190817.07+394036.4 | 16.20 | IBWD |
Cadence: Not Specified Precision: 100 |
Not Requested |
| BMAM-V485 | 17.80 | EA |
Cadence: Not Specified Precision: 100 |
Not Requested |
| ASASSN-14cn | 13.60 | UG/IBWD+E |
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: Drs. Anna Francesca Pala and Thomas Kupfer; Imported Campaign (Alert Notice #758)