Alert Notice 665: R Aqr observations needed urgently
Active Dates: April 19, 2019 – April 19, 2019
Abstract:
Dr. Lee Anne Willson urgently requests observations of the symbiotic Mira R Aqr. The current minimum is low [V~11.7], indicating a possible eclipse/interaction event. Dr. Margarita Karovska also requests BVRI photometry, visual observations, and spectroscopy of R Aqr through at least the end of the observing season.
Justification:
To study the possible eclipse/interaction event occurring every 44 years, centered around 2022 to 2024, lasting about 6 years, and to monitor depressed R and I bands indicating the Mira being blocked by an opaque object.
Requested Data Types:
Photometry, Spectroscopy
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| R Aqr | 5.20 | M+ZAND |
Cadence: Not Specified Precision: 100 |
Cadence: Not Specified Resolution: 250 Desired SNR: 100 |
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. Lee Anne Willson; Imported Campaign (Alert Notice #665)