9th Meeting on Hot Subdwarfs and Related Objects

Welcoming / Opening Remarks

Stéphane Charpinet

Introduction to Session 1

Stephan Geier

Session 1: Physiognomy of binary systems with hot subdwarfs or related objects

Chair: Stéphane Charpinet

› A Radial Velocity Survey of Candidate Variable Hot Subdwarfs from Gaia DR2 - Nathan Grinalds & Kyle Corcoran, Department of Chemistry, High Point University 09:10-09:30 (20min)

› New Variable Hot Subdwarfs from the Evryscope - Brad Barlow, Department of Physics, High Point University 09:30-09:50 (20min)

› Short period hot subdwarf variables - Thomas Kupfer, Kavli Institute for Theoretical Physics/UC Santa Barbara 09:50-10:10 (20min)

› Orbital and atmospheric parameters of two long period O-type hot subdwarf binaries - Francisco Molina, Valencian International University 10:10-10:30 (20min)

Coffee break

Session 1: Physiognomy of binary systems with hot subdwarfs or related objects

Chair: Tiara Battich

› Modeling wide hot subdwarf binaries with MESA - Joris Vos 11:00-11:20 (20min)

› Hot subdwarfs with cool companions - Veronika Schaffenroth, Institute for Physics and Astronomy, University of Potsdam 11:20-11:40 (20min)

› Photometric variability of binary hot subdwarf stars: from the ground to TESS - Ingrid Pelisoli, University of Potsdam 11:40-12:00 (20min)

› Variability in the light curves of Hot Subdwarfs - Tilaksingh Pawar, Institute for Physics and Astronomy, University of Potsdam 12:00-12:05 (05min)

› The X-ray emission of the compact He-poor sdO star Feige 34 - Nicola La Palombara, INAF, IASF-Milano 12:05-12:25 (20min)

Lunch break

Session 1: Physiognomy of binary systems with hot subdwarfs or related objects

Chair: Holly Preece

› WD+He star systems and the formation of accretion-induced collapse events - Dongdong Liu, Yunnan Observatories, Chinese Academy of Sciences 14:00-14:20 (20min)

› Recent progress in our understanding of Hen 2-428 - Nicole Reindl, Institut für Physik und Astrophysik [Potsdam] 14:20-14:40 (20min)

Session 2.1: Hot subdwarf properties from binary studies

Chair: Holly Preece

› NY Vir System Revisited in the Light of New Data - Ekrem Esmer, CFisUC, Ankara University 14:40-15:00 (20min)

› HW Vir: I'll be back! - Roy Østensen, N/A 15:00-15:20 (20min)

› The pulsating sdB+dM binary 2M1938+4603 revisited combining asteroseismology and eclipse timing - somaye soomandar, IRAP, Université de Toulouse / The University of Birjand 15:20-15:25 (05min)

Coffee break

Session 2.1: Hot subdwarf properties from binary studies

Chair: Holly Preece

› The Romer delay in HW Vir type binaries - Andrzej Baran, Mt. Suhora Observatory 16:00-16:20 (20min)

Discussion closing Sessions 1 and 2.1

Chaired by Thomas Kupfer & Joris Vos

Adjourn / Poster viewing