X-ray detection of the symbiotic star AG Draconis

C. M. Anderson, J. P. Cassinelli, W. T. Sanders
1981 Astrophysical Journal  
The symbiotic s t a r AG D r a c o n i s was observed by the HEAO-2 Imaging P r o p o r t i o n a l Counter (IPC) and found t o be an unusually intense source of very soft X-rays.
doi:10.1086/183605 fatcat:5jipmz6tdzfwjcrnnoihnsqr4m