Light Variations of the Anomalous Central Star of Planetary Nebula Sh 2-71
| Authors | |
|---|---|
| Year of publication | 2005 |
| Type | Article in Proceedings |
| Conference | Active OB-Stars: Laboratories for Stellare and Circumstellar Physics, Proceedings of the conference held 29 August - 2 September, 2005 at Hokkai-Gakuen University, Sapporo, Japan |
| MU Faculty or unit | |
| Citation | MIKULÁŠEK, Zdeněk, Augustin SKOPAL, Miloslav ZEJDA, Ondřej PEJCHA, Luboš KOHOUTEK, David MOTL, A. A. VITTONE and L. ERRICO. Light Variations of the Anomalous Central Star of Planetary Nebula Sh 2-71. In Active OB-Stars: Laboratories for Stellare and Circumstellar Physics, Proceedings of the conference held 29 August - 2 September, 2005 at Hokkai-Gakuen University, Sapporo, Japan. San Francisco: Astronomical Society of the Pacific, 2005, p. 469-471. |
| Field | Astronomy and astrophysics |
| Keywords | planetary nebulae; variable stars |
| Description | We present an analysis of light variations in UBVRI of the anomalous object in the center of planetary nebula Sh 2-71. We refined the linear ephemeris of the light maxima to JDmax = 2449862.0 + 68.101 (E-96), but also identified long-term, obviously non-periodic variations. The latter manifest themselves in large O-C shifts, a variable profile of light curves (hereafter LC) and changes in the mean brightness of the object. Our spectroscopic observations suggested the presence of a superdense nebula in the center of Sh 2-71. |
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