Light curves for symbiotic star ASAS J190559-2109.4
Active Dates: Aug. 26, 2020 – Aug. 26, 2020
Abstract:
Adrian Lucy (Columbia University) requests AAVSO assistance in obtaining photometry to create light curves of the newly-discovered symbiotic binary ASAS J190559-2109.4, which shows 5-20% B band flux variations on timescales of minutes to hours in Las Cumbres Observatory observations.
Justification:
The primary goal of this call for observations is to test the capability of AAVSO observers' equipment to detect low-to-moderate-amplitude accretion disk flickering in red giant + white dwarf binaries at B~14-15 mag, since that is a flux regime in which our group expects to find more symbiotic candidates in the SkyMapper survey. The results will help inform the interpretation of any apparent variability observed in symbiotic candidates without observations by professional astronomers, guide future coordinated observations for this project, and provide more information on the flickering in this object.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| ASAS J190559-2109.4 | 12.40 | SR |
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: Adrian Lucy; Imported Campaign (Alert Notice #719)