[Date Prev][Date Next][Date Index]

(cba:news) V380 oph (Joe Patterson) [2015-08-19T16:41:44Z]


Oops, I forgot about V380 Oph in yesterday's message. V380 Oph has been in a low state for months (all year?), and these low states of VY Scl stars can teach us a lot about the secondary stars and processes. Gordon has got in some nights from Australia -= enough to demonstrate that the orbital signal dominates the light curve. But it makes a big difference whether we see just one hump per orbit, or two. One => probably a reflection effect, indicating a very hot WD. Two => possibly the secondary star alone, with an "ellipsoidal" variation. If you can do 19th mag (sorry), let's gang up on the star and torture it for its secrets.

joe
____________________________________________________________
Center for Backyard Astrophysics (CBA) mailing lists
https://cbastro.org/communications/mailing-lists/