Fri, 08/03/2018 - 13:29
Hello,
I'm currently writing a paper about recently found highly eccentric bright EA+DSCT variable TYC 2722-1304-1. I would like to additionally calculate eccentricity and ω of this system using shape, position and duration of asymmetric eclipses. I don't have access to make radial velocity measurements, unfortunately. Can anyone link a software to designate such parameters? I have found only one written in Python, but I don't have any knowledge about this language. Is there something easier to do?
https://www.aavso.org/vsx/index.php?view=detail.top&oid=621142
Regards,
Gabriel Murawski
See, for example:
https://www.aavso.org/apps/jaavso/article/3311/
which just used BinaryMaker3 to make a model that fit the eclipse width and timing.
Was the python code you found "Phoebe" ? That is more sophisticated than BM3: in particular, it can do differential corrections, to optimize the parameters. With BM3, you must do this manually. But Phoebe is free, whilst BM3 costs US$100.
Phoebe 2 (in testing) might handle the DSCT variability. BM3 cannot -- you'd have to model the LC without the DSCT variability. I've used BM3, but not Phoebe.
Gary Billings