New HW Virginis Systems from the MUCHFUSS Project

V. Schaffenroth; S. Geier; I. Barbu-Barna; U. Heber; T. Kupfer; O. Cordes

paper

New HW Virginis Systems from the MUCHFUSS Project

arXiv:1405.4714

Abstract

In course of the MUCHFUSS project we found two new HW Virginis systems. J192059+372220 (J1920) has an orbital period of 0.169 d and an M dwarf companion with a mass of $0.116 M_{⊙}$ . J162256+473051 (J1622) has the shortest period (0.069 d) of all known HW Virginis systems. Its companion has a mass of $0.0635 \pm 0.004 M_{⊙}$ and is therefore the second close brown dwarf found orbiting a subdwarf B star.

Proceeding: 6th Meeting on Hot Subdwarf Stars and Related Objects