Vol. 629
In section 6. Interstellar and circumstellar matter

HR 10: a main-sequence binary with circumstellar envelopes around both components

The authors carry out a detailed study of HR 10 in order to explain the observed variability.They find that the photospheric Ca II K lines can be decomposed into a few components tracing the radial velocity of the individual stars, and show that HR 10 is a binary. This also indicates that other stars exhibiting variability attributed to falling evaporating body (FEB) model phenomena might actually be binaries and behave in a way that is qualitatively similar to HR 10.