Alert Notice 855: V711 Tau monitoring requested in support of XRISM spectroscopy observations
Abstract:
Miki Kurihara (graduate student, University of Tokyo, ISIS/JAXA) and colleagues have requested AAVSO observers' assistance in monitoring the bright (5.71 - 5.94 V) RS CVn star V711 Tau (HR 1099) in support of X-ray satellite observations to be made with the X-Ray Imaging Spectroscopy Mission (XRISM).
Justification:
This is a request for a campaign observation for RS CVn type binary stars coordinated with XRISM (X-Ray Imaging Spectroscopy Mission) observation. XRISM is an international X-ray satellite mission led by JAXA, NASA, and ESA. It was launched last September and has exhibited unprecedented energy resolution (R～1000 @ 6 keV) in orbit. As a part of the calibration program, XRISM will be pointing to HR 1099 (RS CVn type binary) next month for 400 ks in total. To make the most of this opportunity, (semi-)simultaneous observation with X-ray (Chandra, XMM-Newton) and optical (Japanese ground telescopes) are prepared. However, the visibility of ground telescopes in Japan is limited to only a few hours after sunset. Thus, we would like AAVSO astronomers to perform photometry observations of HR 1099.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| BMAM-V711 | 9.35 | EA |
Cadence: Not Specified Precision: 100 |
Not Requested |
Spectroscopy Lines:
No spectroscopy lines provided
Photometry Filters:
V (Johnson)
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: Miki Kurihara; Imported Campaign (Alert Notice #855)