R Aqr photometry and spectroscopy requested in support of Chandra observations

Active Dates: Sept. 21, 2022 – Dec. 31, 2023


Abstract:

Dr. Margarita Karovska (Center for Astrophysics|Harvard & Smithsonian) requests the assistance of AAVSO observers in monitoring the symbiotic binary (Mira + white dwarf) R Aqr in support of upcoming Chandra observations. The Chandra observations are scheduled for September 26, 2022 UT. Starting now, Dr. Karovska requests photometry (UBVRIH, mid-IR if at all possible), high speed photometry (UB), and spectroscopy. Visual observations are welcome. The cadence requested is nightly from now through September 26, then twice a week through October 10. R Aqr has a V range of 5.2 - 12.4. Additional Chandra observations of R Aqr are planned for later this season. R Aqr is presently undergoing the eclipse that occurs about every 40 or so years.

Justification:

Support for upcoming Chandra observations and monitoring during eclipse of R Aqr.

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: Margarita Karovska; Imported Campaign (Alert Notice #792)