Photometry and Spectroscopy requested for V406 Vul (XTE J1859+226)
Active Dates: Feb. 4, 2021 – Feb. 4, 2021
Abstract:
Dr. Eric Bellm (University of Washington) has requested AAVSO assistance in monitoring the black hole Low-Mass X-ray Binary V406 Vul (XTE J1859+226), which has brightened significantly in recent days and may be undergoing a major outburst. CCD observations and spectroscopy are requested.
Justification:
A well-sampled optical light curve during the rise from quiescence can help shed light on where in the accretion disk the instability which causes the outburst occurs. The campaign will continue until the optical flux has returned to quiescent levels (V > 20).
Requested Data Types:
Photometry, Spectroscopy
Targets
Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
---|---|---|---|---|
R Vul | 7.00 | M |
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. Eric Bellm; Imported Campaign (Alert Notice #729)