Request for observations of GW Lib and V842 Cen in support of HST observations
Abstract:
Dr. Paula Szkody (U. Washington) has requested the help of AAVSO observers to provide monitoring of two cataclysmic variables, GW Lib and V842 Cen, in support of Hubble Space Telescope observations in March 2010. Observations of both objects are requested beginning immediately, with intensive observations requested beginning 48 hours prior to the scheduled HST visit. The first observation of GW Lib has now been scheduled for 2010 March 11 03:45 UT (JD 2455266.6563); intensive observations by the AAVSO community are requested beginning 2010 March 9 UT (JD 2455264.5). Observations of V842 Cen are expected to be scheduled during the dates of 2010 March 18-22.
Justification:
Observations of both sources are requested to guarantee to ground controllers at STScI that they are below V~14.0 which is considered the safe limit for the Cosmic Origins Spectrograph. Positive observations are preferred if at all possible,however any fainter-than below V=14 is useful.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| GW Lib | 8.20 | UGWZ+ZZ/GWLIB |
Cadence: Not Specified Precision: 100 |
Not Requested |
| R Cen | 5.30 | M |
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. Paula Szkody; Imported Campaign (Alert Notice #417)