26 citations · 48 across the 6 of their papers we have counts for
6 papers
A Long-Term Spectral Study of the Single Active Giant OP Andromedae
Stefan Georgiev, Renada Konstantinova-Antova, Ana Borisova +10
We present a spectral study of the single magnetically active K giant OP And in the period 1979 -- 2018, monitoring the variability of the activity indicator line H. Original da…
The different origins of magnetic fields and activity in the Hertzsprung gap stars, OU Andromedae and 31 Comae
A. Borisova, M. Aurière, P. Petit +3
Context: When crossing the Hertzsprung gap, intermediate-mass stars develop a convective envelope. Fast rotators on the main sequence, or Ap star descendants, are expected to becom…
Bayesian approach to cyclic activity of CF Oct
Ana P. Borisova, Valeri V. Hambaryan, John L. Innis
Bayesian statistical methods of Gregory-Loredo and the Bretthorst generalization of the Lomb-Scargle periodogram have been applied for studying activity cycles of the early K-type…
Aperture Photometry of Saturated Star Images from Digitised Photographic Plates
J. L. Innis, D. W. Coates, A. P. Borisova +1
Saturated stellar images on digitised photographic plates are many times greater in area than the `seeing disk' seen in unsaturated CCD images. Indeed the flux profile of a bright…
The History of the Mysterious Eclipses of KH 15D II. Asiago, Kiso, Kitt Peak, Mt. Wilson, Palomar, Tautenburg and Rozhen Observatories, 1954-97
John Asher Johnson, Joshua N. Winn, Francesca Rampazzi +6
The unusual pre-main-sequence binary star named KH 15D undergoes remarkably deep and long-lasting periodic eclipses. Some clues about the reason for these eclipses have come from t…
Archival light curves from the Bamberg Sky Patrol - CFOctantis, 1964-1976
J. L. Innis, A. P. Borisova, D. W. Coates +1
We use the archive of the Bamberg Sky Patrol to obtain light curves of the active K subgiant CF Octantis for the interval 1964-1976. Digitised images of the field near CF Oct were…