Alert Notice 662: V818 Sco (Sco X-1) multiwavelength campaign
Active Dates: Feb. 20, 2019 – Feb. 24, 2019
Abstract:
Drs. Sara Motta and Jari Kajava (University of Oxford) have requested AAVSO observers' assistance in monitoring the binary X-ray source V818 Sco (Sco X-1) in support of a large multiwavelength observing campaign being carried out from now through 2019 February 24.
Justification:
The emission from this binary system is highly variable at all wavelengths and continuous coverage is key to probe in detail the physics at play in this system. In particular, fast variability in optical is partly related to the variability produced in an accretion disk, transmitted and propagated through the jet that emits at wavelengths from optical to radio.
Requested Data Types:
Photometry
Targets
| Name | Magnitude | Variability Type | Photometry Notes | Spectroscopy Notes |
|---|---|---|---|---|
| V1279 Sco | 11.80 | CTTS |
Cadence: Not Specified Precision: 100 |
Not Requested |
| 2MASS J17480582+3404013 | 16.20 | QSO |
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: Sara Motta, Jari Kajava; Imported Campaign (Alert Notice #662)