Using ESA’s XMM-Newton spacecraft, astronomers have conducted X-ray observations of a peculiar Cepheid variable star known as V473 Lyr. Results of the study suggest that this star has a young, low-mass companion. The finding is detailed in a paper published January 7 on the arXiv pre-print repository.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/v473lyrhasal.jpg)
Source:
https://phys.org/news/2020-01-v473-lyr-low-mass-companion.html