Observing campaign on Polars
Active Dates: Oct. 16, 2019 – May 31, 2020
Abstract:
Drs. Kaya Mori (PI), Charles Hailey, Ninad Nirgudkar (Columbia University), and Gavin Ramsay (Armagh Observatory) are requesting AAVSO assistance in monitoring 5 polars in support of their X-ray study of these stars.
Justification:
Our team is running a long-term program of observing polars (i.e. highly-magnetized CVs) with NASA’s NuSTAR X-ray telescope. Since polars are highly variable (with ~50% duty cycle), we would like to schedule our X-ray observations when our targets are bright in the X-ray band...Using the future optical magnitude data obtained by AAVSO members [the optical and X-ray fluxes of magnetic CVs are positively correlated], we will make a decision on whether we should trigger X-ray observations or not. Our NuSTAR observations of polars in our neighborhood are the first crucial steps to resolve one of the long-standing problems in high-energy astrophysics - the source populations that comprise the Galactic Ridge X-ray emission.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| UZ For | 17.00 | AM+E |
Cadence: Not Specified Precision: 100 |
Not Requested |
| VV Pup | 13.90 | AM+ELL |
Cadence: Not Specified Precision: 100 |
Not Requested |
| ST LMi | 14.40 | AM |
Cadence: Not Specified Precision: 100 |
Not Requested |
| V2301 Oph | 14.70 | AM+E |
Cadence: Not Specified Precision: 100 |
Not Requested |
| EP Dra | 17.60 | AM+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: Kaya Mori; Imported Campaign (Alert Notice #682)