TY - GEN
T1 - Optical spectroscopy of DPVs and the case of LP Ara
AU - Mennickent, Ronald E.
AU - Graczyk, Darek
AU - Kołaczkowski, Zbigniew
AU - Michalska, Gabriela
AU - Barría, Daniela
AU - Niemczura, Ewa
PY - 2010/7
Y1 - 2010/7
N2 - We present preliminary results of our spectroscopic campaign of a group of intermediate mass interacting binaries dubbed "Double Periodic Variables" (DPVs), characterized by orbital light curves and additional long photometric cycles recurring roughly after 33 orbital periods (Mennickent et al. 2003, 2005). They have been interpreted as interacting, semi-detached binaries showing cycles of mass loss into the interstellar medium (Mennickent et al. 2008, Mennickent & Kołaczkowski 2009). High resolution Balmer and helium line profiles of DPVs can be interpreted in terms of mass flows in these systems. A system solution is given for LPAra, based on modeling of the ASAS V-band orbital light curve and the radial velocity of the donor star.
AB - We present preliminary results of our spectroscopic campaign of a group of intermediate mass interacting binaries dubbed "Double Periodic Variables" (DPVs), characterized by orbital light curves and additional long photometric cycles recurring roughly after 33 orbital periods (Mennickent et al. 2003, 2005). They have been interpreted as interacting, semi-detached binaries showing cycles of mass loss into the interstellar medium (Mennickent et al. 2008, Mennickent & Kołaczkowski 2009). High resolution Balmer and helium line profiles of DPVs can be interpreted in terms of mass flows in these systems. A system solution is given for LPAra, based on modeling of the ASAS V-band orbital light curve and the radial velocity of the donor star.
KW - Stars: binaries
KW - Stars: early-typ
UR - https://www.scopus.com/pages/publications/84882781363
U2 - 10.1017/S1743921311011306
DO - 10.1017/S1743921311011306
M3 - Conference contribution
AN - SCOPUS:84882781363
SN - 9780521198400
T3 - Proceedings of the International Astronomical Union
SP - 527
EP - 528
BT - Active OB stars
PB - Cambridge University Press
ER -