HR 10: a MS binary with two circumstellar shells (Montesinos et al.)

Vol. 629
In section 6. Interstellar and circumstellar matter

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

by B. Montesinos, C. Eiroa, J. Lillo-Box, et al., 2019, A&A, 629, A19 alt

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.