On the Origin of Long Secondary Periods in Semiregular Variables
The presence of a long secondary period (LSP) in the light curves of some local semiregular variables has been known for many years. Furthermore, the LSPs have recently been found in the light curves of approximately 25% of the semiregular variables in the LMC. They typically have a length of ∼500-4000 days, some 5-15 times longer than the primary period. Binarity, pulsation, periodic dust ejection, and rotation have been suggested as the origin of the LSPs. Here we analyze echelle spectra of a...[Show more]
|Collections||ANU Research Publications|
|Source:||Astrophysical Journal, The|
|01_Olivier_On_the_Origin_of_Long_2003.pdf||236.73 kB||Adobe PDF||Request a copy|
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.