Search Publications

SW Lacertae, W Ursae Majoris, YY Eridani and the prevalence of starspots in cool contact binaries.

Eaton, J. A.

Detailed light curve analyses have been carried out for three cool contact binaries to determine (1) what makes the larger component appear cooler and (2) how a period change affects the structure of the common envelope.

Implications of the light curve of the A-type W UMa binary V566 Ophiuchi.

Eaton, Joel A.

Broadband (2585-3200-A) IUE photometric observations of V566 Oph obtained in three 8-h shifts on July 17-19, 1984 are reported and solved simultaneously with the ground-based optical observations of Bookmyer (1976). The observed light curves are fit to theoretical Roche-model light curves using the computer program described by Eaton (1986). The d…

A search of tidal interaction in RS CVn stars : UV emission variations in lambda And.

Glebocki, R.; Sikorski, J.; Bielicz, Elzbieta +1 more

31 spectra obtained with the LWR camera of the IUE satellite in the period 1978 - 83 are analysed. Except strong Mg II h and k lines three other weak emissions are found. Changes of intensities of the emission lines are not correlated with photometric (rotational) period. The Mg II emissions show very good correlation with half of the orbital peri…