2A 0311-227

Ward, M.J.; Allen, D.A.; Smith, M.G.; Wright, A.E.

Abstract

Infrared observations of this x-ray emitting, AM Her-like star (IAUC 3326) were made with the Anglo-Australian Telescope by M. J. Ward, Institute of Astronomy, Cambridge; and D. A. Allen, M. G. Smith and A. E. Wright, Anglo-Australian Observatory. Flickering of +/- 0.2 magnitude was seen at J, H, and K, as in AM Her (Jameson et al. 1978, Nature 271, 334). Relative to the quiescent level, a minimum 0.8 magnitude deep was seen every 81.0 +/- 0.1 min (cf. IAUC 3324), followed within ~ 5 min by flaring up to 0.8 magnitude. The epoch of the best observed minimum was 1979 Mar. 12d10h55m +/- 1m UT. Similar variations were seen in the visible on the TV monitor. The continuum was much bluer than that of AM Her, with J-K ~ +0.2.

Citation

Ward, M., Allen, D., Smith, M., & Wright, A. (1979). 2A 0311-227

• Journal Article Type: Article
• Publication Date: 1979-03
• Journal: International Astronomical Union Circular
• Volume: 3335
• Public URL: https://durham-repository.worktribe.com/output/1609380
• Publisher URL: http://www.cbat.eps.harvard.edu/iauc/03300/03335.html