Preliminary analysis of photometric variations of central star of planetary nebula Sh 2-71
|Original title:||Preliminary analysis of photometric variations of central star of planetary nebula Sh 2-71|
|Authors:||Zdeněk Mikulášek, Luboš Kohoutek, Miloslav Zejda, Ondřej Pejcha|
|Field:||Astronomy and astrophysics|
|Type:||Article in Periodical|
|Keywords:||UBVRI photometry; planetary nebula; Sh 2-71; period; PCA|
We confirm the presence of regular UBVRI light variations of the object in the center of the planetary nebula Sh 2-71, with an improved period of P=68.132+/-0.005 days. The shapes and amplitudes of light curves, in particular colours, are briefly discussed.