An extremely slow nova? |
| |
| Authors: | Patricia Whitelock Freddy Marang |
| |
| Institution: | South African Astronomical Observatory, PO Box 9, Observatory, 7935, South Africa |
| |
| Abstract: | The binary companion to the peculiar F supergiant HD 172481 is shown to be a Mira variable with a pulsation period of 312 d. Its characteristics are within the normal range found for solitary Miras of that period, although its pulsation amplitude and mass-loss rate ? ～3×10?6 M⊙ yr?1 are higher than average. Reasons are given for suspecting that the F supergiant, which has L ～104 L⊙, is a white dwarf burning hydrogen accreted from its companion. |
| |
| Keywords: | stars: AGB and post‐AGB binaries: close stars: individual: HD 172481 novae cataclysmic variables infrared: stars |
|
|
