V417 Cen is a D'-type symbiotic system surrounded by a faint, extended asymmetric nebula. Optical photometric observations of this object cover last 20 years. They show strong long term modulation with a period of about 1700 days and amplitude about 1.5 mag in V band, in addition to variations with shorter timescales (560, 330, 210 and 60 days) and much lower amplitudes. In this presentation we discuss the nature of these variations.
Asymmetric Planetary Nebulae 5 Conference
- Pub Date:
- planetary nebulae: general;
- Astrophysics - Galaxy Astrophysics
- 6 pages, 2 figures, conference poster, to appear in the proceedings of Asymmetric Planetary Nebulae V