Accession Number:

AD0687659

Title:

NARROW-BAND PHOTOMETRY OF FIVE COMBINATION-VARIABLE STARS AND THE X-RAY SOURCE CYG X-2,

Descriptive Note:

Corporate Author:

LOCKHEED MISSILES AND SPACE CO PALO ALTO CALIF LOCKHEED RESEARCH LAB

Personal Author(s):

Report Date:

1968-12-05

Pagination or Media Count:

6.0

Abstract:

HD 4174, AG Dra, AG Peg, MHa328-116, CH Cyg, and Cyg X-2 were observed in narrow bands around H beta and in a narrow band which includes He2 4686A and N3 4640A when they are present. Some of these previously active stars were quiet on the dates of our work. But the light curves of CH Cyg suggest eclipses in H beta and in the continuum as well as small flares in the continuum. The light curves of Cyg X-2 show that He 2 4686A weakens as H beta absorption increases on one date, while independent variation of the continuum occurs from one date to the next. There is no common pattern of variability in these stars. Author

Subject Categories:

  • Astrophysics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE