NT Aps, a southern sky W UMa stellar system with a decreasing period.
Abstract
NT Aps, a W UMa star in the southern hemisphere, was observed in white light in 2007 and Band V filter in 2008 using personal telescopes from South Africa. From the Hipparcos ephemeris of 1991 a decrease in period of ~125 seconds per year for the binary is detected. Furthermore, software modeling packages of BINARY MAKER 3 and PHOEBE were employed to constrain the parameters of the binary components. The result of the modeling exercise is presented.
- Publication:
-
Monthly Notes of the Astronomical Society of South Africa
- Pub Date:
- April 2012
- Bibcode:
- 2012MNSSA..71...72M