B. MENNESSON∗,††, N. SCOTT†, T. TEN BRUMMELAAR†, G. BRYDEN∗, N. TURNER∗, O. ABSIL‡, R. MILLAN-GABET§, V. COUDE DU FORESTO¶, J. C. AUGEREAU‖, S. RIDGWAY∗∗, J. LEBRETON‖ and L. MARION‡ ∗Jet Propulsion Laboratory, California Institute of Technology 4800 Oak Grove Drive, Pasadena CA 91109-8099, USA †Center for High Angular Resolution Astronomy Georgia State University Mt. Wilson, CA 91023, USA ‡Dep...

We present the first results of a starspot interferometric imaging program targeting the chromospherically active giant Lambda Andromedae. Our images are constructed using a new starspot model that incorporates a power limb darkening law and starspot foreshortening. The model solutions are determined through χ minimization of observed squared visibilities, triple amplitudes and closure phase. M...

Abstract Castor is a system of six stars in which the two brighter objects, A and B, revolve around each other every ∼450 yr are both short-period spectroscopic binaries. They attended by more distant C, also binary. Here we report interferometric observations with Center for High Angular Resolution Astronomy (CHARA) array that spatially resolve companions B first time. We complement these new ...

The objective of this study was to analyze the temporal variability of biometric features and the carbonate production of two charophytes: Chara polyacantha A. Braun and Chara rudis A. Braun against the background of the physical-chemical properties of water. The investigation was carried out in a small, mid-forest Lake Jasne (western Poland). It is a polymictic, mesotrophic, hardwater ecosyste...

In salt-tolerant Chara longifolia, enhanced Na+ efflux plays an important role in maintaining low cytoplasmic Na+. When it is cultured in fresh water (FW), C. longifolia has a higher Na+ efflux than the obligate FW Chara corallina, although pH dependence and inhibitor profiles are similar for both species (1. Whittington and M.A. Bisson 119941 j Exp Bot 45: 657-665). When it is cultured in salt...