Request for monitoring of the magnetic cataclysmic variable 1931-46 QS Tel
Abstract:
Dr. Christopher Mauche, Lawrence Livermore National Laboratory, has requested our assistance in ongoing monitoring, particularly by CCD observers, of the magnetic cataclysmic variable 1931-46 QS Tel (RX J1938.6-4612), beginning now and continuing until at least the end of 2004. QS Tel is a very bright extreme ultraviolet and soft x-ray source likely to be of ongoing interest to researchers, so long-term optical coverage is very important. Because little is known about its optical behavior, this request for optical monitoring represents an opportunity for observers to add to the fundamental information on QS Tel.
Justification:
Regular observations are required to (1) establish the optical behavior of QS Tel, and (2) trigger an approved target-of-opportunity Chandra Low Energy Transmission Grating observation, which can take place only when the source is in a high state. The Chandra data will be used to measure the EUV/soft X-ray spectral energy distribution of the accretion-heated white dwarf photosphere and refine the parameters of the absorption lines and edges first detected with the EUVE satellite by Rosen et al. (1996, Monthly Notices Royal Astronomical Society, 280, 1121).
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| QS Tel | 15.25 | AM |
Cadence: Not Specified Precision: 100 |
Not Requested |
Spectroscopy Lines:
No spectroscopy lines provided
Photometry Filters:
V (Johnson), r (Sloan)
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. Christopher Mauche; Imported Campaign (Alert Notice #302)