244 citations · 3.3k across the 56 of their papers we have counts for
3 papers · 1 filter
Extended-Source Effect and Chromaticity in Two-Point-Mass Microlensing
Ondrej Pejcha, David Heyrovsky
We explore the sensitivity of two-point-mass gravitational microlensing to the extended nature of the source star, as well as the related sensitivity to its limb darkening. We demo…
Preliminary analysis of photometric variations of central star of planetary nebula Sh 2-71
Zdenek Mikulasek, Lubos Kohoutek, Miloslav Zejda +1
We confirmed the presence of regular UBVRIc light variations of the object in the centre of planetary nebula Sh 2-71, the improved period of them being P =(68.132+/-0.005) days. Th…
Observations of possible symbiotic star V335 Vul
Petr Sobotka, Ondrej Pejcha, Ladislav Smelcer +1
We present visual and CCD VRI observations of a suspected symbiotic binary V335 Vul. Long term photometry suggests usual Mira or SRa pulsations. High speed V band CCD photometry di…