Sunday, June 23, 2019

Time Event  
18:00 - 20:00 Welcome reception / Registration  

Monday, June 24, 2019

Time Event  
08:55 - 09:00 Welcoming / Opening Remarks - Stéphane Charpinet  
09:00 - 09:10 Introduction to Session 1 - Stephan Geier  
09:10 - 10:30 Session 1: Physiognomy of binary systems with hot subdwarfs or related objects - Chair: Stéphane Charpinet  
09:10 - 09:30 › A Radial Velocity Survey of Candidate Variable Hot Subdwarfs from Gaia DR2 - Nathan Grinalds & Kyle Corcoran, Department of Chemistry, High Point University  
09:30 - 09:50 › New Variable Hot Subdwarfs from the Evryscope - Brad Barlow, Department of Physics, High Point University  
09:50 - 10:10 › Short period hot subdwarf variables - Thomas Kupfer, Kavli Institute for Theoretical Physics/UC Santa Barbara  
10:10 - 10:30 › Orbital and atmospheric parameters of two long period O-type hot subdwarf binaries - Francisco Molina, Valencian International University  
10:30 - 11:00 Coffee break  
11:00 - 12:25 Session 1: Physiognomy of binary systems with hot subdwarfs or related objects - Chair: Tiara Battich  
11:00 - 11:20 › Modeling wide hot subdwarf binaries with MESA - Joris Vos  
11:20 - 11:40 › Hot subdwarfs with cool companions - Veronika Schaffenroth, Institute for Physics and Astronomy, University of Potsdam  
11:40 - 12:00 › Photometric variability of binary hot subdwarf stars: from the ground to TESS - Ingrid Pelisoli, University of Potsdam  
12:00 - 12:05 › Variability in the light curves of Hot Subdwarfs - Tilaksingh Pawar, Institute for Physics and Astronomy, University of Potsdam  
12:05 - 12:25 › The X-ray emission of the compact He-poor sdO star Feige 34 - Nicola La Palombara, INAF, IASF-Milano  
12:25 - 14:00 Lunch break  
14:00 - 14:40 Session 1: Physiognomy of binary systems with hot subdwarfs or related objects - Chair: Holly Preece  
14:00 - 14:20 › WD+He star systems and the formation of accretion-induced collapse events - Dongdong Liu, Yunnan Observatories, Chinese Academy of Sciences  
14:20 - 14:40 › Recent progress in our understanding of Hen 2-428 - Nicole Reindl, Institut für Physik und Astrophysik [Potsdam]  
14:40 - 15:25 Session 2.1: Hot subdwarf properties from binary studies - Chair: Holly Preece  
14:40 - 15:00 › NY Vir System Revisited in the Light of New Data - Ekrem Esmer, CFisUC, Ankara University  
15:00 - 15:20 › HW Vir: I'll be back! - Roy Østensen, N/A  
15:20 - 15:25 › The pulsating sdB+dM binary 2M1938+4603 revisited combining asteroseismology and eclipse timing - somaye soomandar, IRAP, Université de Toulouse / The University of Birjand  
15:25 - 16:00 Coffee break  
16:00 - 16:20 Session 2.1: Hot subdwarf properties from binary studies - Chair: Holly Preece  
16:00 - 16:20 › The Romer delay in HW Vir type binaries - Andrzej Baran, Mt. Suhora Observatory  
16:20 - 16:50 Discussion closing Sessions 1 and 2.1 - Chaired by Thomas Kupfer & Joris Vos  
16:50 - 17:30 Adjourn / Poster viewing  

Tuesday, June 25, 2019

Time Event  
09:00 - 09:10 Introduction to Session 2 - Uli Heber  
09:10 - 10:35 Session 2.2 : Hot subdwarf properties from atmospheric studies - Chair: Veronika Schaffenroth  
09:10 - 09:30 › The 3He anomaly and atmospheric helium stratification of sdB and BHB stars - Ulrich Heber, Dr. Remeis-Sternwarte, Universität Erlangen-Nürnberg  
09:30 - 09:50 › Fundamental Parameters of Hot Subdwarf Stars from Gaia Astrometry - David Schneider, Dr. Karl Remeis Observatory & ECAP, University Erlangen-Nürnberg  
09:50 - 10:10 › The chemical composition of heavy-metal hot subdwarfs: HZ44 and HD127493 - Matti Dorsch, Institut für Physik und Astronomie, Universität Potsdam, Dr. Remeis-Sternwarte, Universität Erlangen-Nürnberg  
10:10 - 10:30 › Feige 46: a second pulsating intermediate He-sdOB and heavy-metal star ? - Marilyn Latour, Universität Göttingen  
10:30 - 10:35 › The SALT survey of chemically peculiar subdwarfs - Simon Jeffery, Trinity College Dublin, Armagh Observatory and Planetarium  
10:35 - 10:55 Coffee break  
10:55 - 11:10 Session 2.2 : Hot subdwarf properties from atmospheric studies - Chair: Veronika Schaffenroth  
10:55 - 11:00 › TheoSSA: Synthetic Spectra of the Geier Grid available on Demand - Thomas Rauch, University Tübingen  
11:00 - 11:05 › Non-local Thermodynamic Equilibrium Model-Atmosphere Spectra of sdOB stars on Demand - Thomas Rauch, University Tübingen  
11:05 - 11:10 › NLTE spectral analysis of the intermediate helium-rich sdB CPD-20°1123 - Thomas Rauch, University Tübingen  
11:10 - 12:40 Session 2.3: Hot subdwarf properties from asteroseismic studies - Chair: Maja Vuckovic  
11:10 - 11:30 › Putting sdB star asteroseismology to the test with GAIA - Suzanna Randall, European Southern Observatory  
11:30 - 11:50 › Asteroseismic modeling of hot subdwarfs observed by TESS - Valerie Van Grootel, Space Sciences, Technologies and Astrophysics Research Institute  
11:50 - 12:10 › Asteroseismology of the g-mode sdB pulsator TIC 278659026 - Stéphane Charpinet, Institut de recherche en astrophysique et planétologie  
12:10 - 12:30 › Probing the convective cores of core-helium-burning giants using seismology - Sebastien Deheuvels, IRAP  
12:30 - 12:35 › Gauging convective cores in sdB stars with pulsating DA WDs - Tiara Battich, Instituto de Astrofísica de La Plata, Universidad Nacional de La Plata, CONICET  
12:35 - 12:40 › Theoretical pulsation spectra for the 4th generation models of hot subdwarf stars - Valerie Van Grootel, Space Sciences, Technologies and Astrophysics Research Institute  
12:40 - 14:00 Lunch break  
14:00 - 14:40 Session 2.3: Hot subdwarf properties from asteroseismic studies - Chair: Maja Vuckovic  
14:00 - 14:20 › Asteroseismology of Kepler/K2 white dwarf stars - Barbara Castanheira, Baylor University  
14:20 - 14:40 › Asteroseismology of Lambda Bootis stars - Benjamin Fernando, Oxford University  
14:40 - 15:10 Discussion closing Session 2 - Chaired by Tony Lynas-Gray & Marilyn Latour  
15:10 - 15:20 Introduction to Session 3 - Zhanwen Han  
15:20 - 15:40 Session 3.1: Hot subdwarf populations and related objects - Chair: Nicole Reindl  
15:20 - 15:40 › Gaia's treasure chest - The quest to compile an all-sky sample of hot subdwarfs - Stephan Geier, University of Potsdam  
15:40 - 16:00 Coffee break  
16:10 - 17:15 Session 3.1: Hot subdwarf populations and related objects - Chair: Nicole Reindl  
16:10 - 16:30 › Kinematics of sdB and sdOB stars from GAIA and SDSS data - Alexander Bastian, Institute for Physics and Astronomy, University of Potsdam  
16:30 - 16:50 › Quantitative spectral analyses of blue horizontal branch stars - Steven Hämmerich, Dr. Karl Remeis Observatory & ECAP, University Erlangen-Nürnberg  
16:50 - 16:55 › Gaia Data Release 2 Catalogue of Extremely-low Mass White Dwarf Candidates - Ingrid Pelisoli, University of Potsdam  
16:55 - 17:15 › The mystery on the origin of extreme horizontal branch stars in globular clusters - Annalisa Calamida, SPACE TELESCOPE SCIENCE INSTITUTE - AURA  
17:15 - 17:45 Adjourn / Poster viewing  

Wednesday, June 26, 2019

Time Event  
09:00 - 10:25 Session 3.2: Origin and evolution, progenies and progenitors - Chair: Weikai Zong  
09:00 - 09:20 › Hot Subdwarf Stars from LAMOST DR5 and Gaia DR2 - Zhanwen Han, Yunnan Observatories  
09:20 - 09:40 › Mining the future of low-mass, core-He-burning hot subdwarfs - JJ Hermes, Boston University  
09:40 - 10:00 › Helium Stars, Heavy Metals, High Velocities and Explosions - Simon Jeffery, Trinity College Dublin, Armagh Observatory and Planetarium  
10:00 - 10:05 › Helium star donors to thermonuclear supernovae - Josiah Schwab, University of California, Santa Cruz  
10:05 - 10:25 › Effect of L3 mass loss on formation of sdB-MS binaries - Alexey Bobrick, Lund Observatory  
10:25 - 10:50 Coffee break  
10:50 - 12:30 Session 3.2: Origin and evolution, progenies and progenitors - Chair: Ingrid Pelisoli  
10:50 - 11:10 › Formation of hot subdwarf B stars with neutron star components - You Wu, Yunnan Observatories, Chinese Academy of Sciences  
11:10 - 11:30 › The Formation and Evolution of R Coronae Borealis Stars - Josiah Schwab, University of California, Santa Cruz  
11:30 - 11:50 › Thermal Timescale Mass Transfer and the Growth of Helium White Dwarfs - Evan Bauer, Physics Department, UC Santa Barbara  
11:50 - 12:10 › He-shell burning hot subdwarf B stars as candidates for blue large-amplitude pulsations - Xuefei CHEN, Yunnan Observatories  
12:10 - 12:30 › BLAPS: the Possible Surviving Companions of Type Ia Supernovae - Xiangcun MENG, Yunnan Observatories, Chinese Academy of Sciences  
12:30 - 13:00 Discussion closing Session 3 - Chaired by Annalisa Calamida & Xuefei Chen  
13:00 - 14:00 Lunch break  
14:00 - 18:00 Free afternoon / Activities / Excursions  

Thursday, June 27, 2019

Time Event  
09:00 - 09:10 Introduction to Session 4 - Suzanna Randall  
09:10 - 10:30 Session 4: Hot subdwarfs and their pulsations - Chair: Somaye Soomandar  
09:10 - 09:30 › A Pulsation Mechanism for He-rich sdOBV stars - Tiara Battich, Instituto de Astrofísica de La Plata  
09:30 - 09:50 › Asteroseismology of Tidally Distorted sdB Stars - Holly Preece, Institute of Astronomy, University of Cambridge & Armagh Observatory and Planetarium  
09:50 - 10:10 › Musical Orchestra of sub dwarf B stars in NGC6791 - Sachu Sanjayan, Copernicus Astronomical Center of the Polish Academy of Sciences, Pedagogical University of Krakow  
10:10 - 10:30 › On a mode geometry in a sample of subdwarf B stars observed by TESS - Sumanta Sahoo, Copernicus Astronomical Center of the Polish Academy of Sciences, Pedagogical University of Krakow  
10:30 - 11:00 Coffee break  
11:00 - 12:20 Session 4: Hot subdwarfs and their pulsations - Chair: Benjamin Fernando  
11:00 - 11:20 › Gravity (g) mode pulsators from the TESS mission - Murat Uzundag, University of Valparaiso  
11:20 - 11:40 › Kepler view on sdB pulsators: amplitude and frequency variations of oscillation modes - Weikai Zong, Beijing Normal University  
11:40 - 12:00 › Pulsation Timing Analysis for a Pulsating Subdwarf B star, EC 05217-3914 - Tomomi Otani, Embry-Riddle Aeronautical University  
12:00 - 12:20 › HD 4539: a bright single sdB star showing high-degree g-modes with l up to 12 - Roberto Silvotti, INAF - Osservatorio Astrofisico di Torino  
12:20 - 12:50 Discussion closing Session 4 - Chaired by Dave Kilkenny & Andy Baran  
12:50 - 14:00 Lunch break  
14:00 - 14:10 Introduction to Session 5 - Simon Jeffery  
14:10 - 15:30 Session 5: Evolved compact stars as laboratories for stellar physics - Chair: Matti Dorsh  
14:10 - 14:30 › Recent results on the peculiar sdO binary HD49798 - Sandro Mereghetti, INAF, IASF-Milano  
14:30 - 14:50 › S-process nucleosynthesis during the formation of He-rich hot subdwarfs - Tiara Battich, Instituto de Astrofísica de La Plata, Universidad Nacional de La Plata, CONICET  
14:50 - 15:10 › Modern evolutionary modelling of sdB stars using the MESA code - Jakub Ostrowski, Pedagogical University of Krakow  
15:10 - 15:30 › Atomic Diffusion in Chemically Peculiar Hot Subdwarfs - Conor Byrne, Armagh Observatory and Planetarium, Trinity College Dublin  
15:30 - 16:00 Coffee break  
16:00 - 16:40 Session 5: Evolved compact stars as laboratories for stellar physics - Chair: Steven Hämmerich  
16:00 - 16:20 › Super Metal-Rich Hot Subdwarfs as Tools for Atomic Physics - Alexander Landstorfer, University of Tübingen  
16:20 - 16:40 › The formation of a CONe white dwarf through super AGB evolution - Yan Li, Yunnan Observatories, Chinese Academy of Sciences  
16:40 - 17:10 Discussion closing Session 5 - Chaired by Simon Jeffery & Josiah Schwab  
17:10 - 17:30 Adjourn / Poster viewing  
19:00 - 22:30 Conference dinner  

Friday, June 28, 2019

Time Event  
10:00 - 12:00 Open discussion, Prospects and Concluding Remarks - Chaired by Roy Ostensen & Zhanwen Han  
12:00 - 14:00 End of meeting / Lunch time