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)