Parameters for a close binary system
Posted: Fri Feb 12, 2021 11:16 pm
Radial velocity measurements on a close binary system with young stars, with spectroscopic observations mostly from a professional observatory but supplemented with some data from my Lhires (when we didn't quite get the curve coverage we needed from our time allocation on the big telescope). This project is leading to some further binary star work with both professional and Lhires data.
The high degree of rotational broadening of the lines in these objects means that for practical purposes resolutions of much more than about R=10,000 or so don't add very much precision to RV measurements. Nobody really gets to precision of better than about 5km/s on these systems, so there's good scope for studies with typical amateur equipment. Though of course there are more unobserved bright systems on this side of the sky than there are in the Northern Hemisphere...
https://arxiv.org/abs/2102.00362
The high degree of rotational broadening of the lines in these objects means that for practical purposes resolutions of much more than about R=10,000 or so don't add very much precision to RV measurements. Nobody really gets to precision of better than about 5km/s on these systems, so there's good scope for studies with typical amateur equipment. Though of course there are more unobserved bright systems on this side of the sky than there are in the Northern Hemisphere...
https://arxiv.org/abs/2102.00362