9th Meeting on Hot Subdwarfs and Related Objects

›9:00 (10min)

Introduction to Session 2
Uli Heber

9:00 - 9:10 (10min)

Introduction to Session 2

Uli Heber

›9:10 (1h25)

Session 2.2 : Hot subdwarf properties from atmospheric studies
Chair: Veronika Schaffenroth

9:10 - 10:35 (1h25)

Session 2.2 : Hot subdwarf properties from atmospheric studies

Chair: Veronika Schaffenroth

› The 3He anomaly and atmospheric helium stratification of sdB and BHB stars - Ulrich Heber, Dr. Remeis-Sternwarte, Universität Erlangen-Nürnberg 09:10-09:30 (20min)

› Fundamental Parameters of Hot Subdwarf Stars from Gaia Astrometry - David Schneider, Dr. Karl Remeis Observatory & ECAP, University Erlangen-Nürnberg 09:30-09:50 (20min)

› 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 09:50-10:10 (20min)

› Feige 46: a second pulsating intermediate He-sdOB and heavy-metal star ? - Marilyn Latour, Universität Göttingen 10:10-10:30 (20min)

› The SALT survey of chemically peculiar subdwarfs - Simon Jeffery, Trinity College Dublin, Armagh Observatory and Planetarium 10:30-10:35 (05min)

›10:35 (20min)

Coffee break

10:35 - 10:55 (20min)

Coffee break

›10:55 (15min)

Session 2.2 : Hot subdwarf properties from atmospheric studies
Chair: Veronika Schaffenroth

10:55 - 11:10 (15min)

Session 2.2 : Hot subdwarf properties from atmospheric studies

Chair: Veronika Schaffenroth

› TheoSSA: Synthetic Spectra of the Geier Grid available on Demand - Thomas Rauch, University Tübingen 10:55-11:00 (05min)

› Non-local Thermodynamic Equilibrium Model-Atmosphere Spectra of sdOB stars on Demand - Thomas Rauch, University Tübingen 11:00-11:05 (05min)

› NLTE spectral analysis of the intermediate helium-rich sdB CPD-20°1123 - Thomas Rauch, University Tübingen 11:05-11:10 (05min)

›11:10 (1h30)

Session 2.3: Hot subdwarf properties from asteroseismic studies
Chair: Maja Vuckovic

11:10 - 12:40 (1h30)

Session 2.3: Hot subdwarf properties from asteroseismic studies

Chair: Maja Vuckovic

› Putting sdB star asteroseismology to the test with GAIA - Suzanna Randall, European Southern Observatory 11:10-11:30 (20min)

› Asteroseismic modeling of hot subdwarfs observed by TESS - Valerie Van Grootel, Space Sciences, Technologies and Astrophysics Research Institute 11:30-11:50 (20min)

› Asteroseismology of the g-mode sdB pulsator TIC 278659026 - Stéphane Charpinet, Institut de recherche en astrophysique et planétologie 11:50-12:10 (20min)

› Probing the convective cores of core-helium-burning giants using seismology - Sebastien Deheuvels, IRAP 12:10-12:30 (20min)

› Gauging convective cores in sdB stars with pulsating DA WDs - Tiara Battich, Instituto de Astrofísica de La Plata, Universidad Nacional de La Plata, CONICET 12:30-12:35 (05min)

› Theoretical pulsation spectra for the 4th generation models of hot subdwarf stars - Valerie Van Grootel, Space Sciences, Technologies and Astrophysics Research Institute 12:35-12:40 (05min)

›12:40 (1h20)

Lunch break

12:40 - 14:00 (1h20)

Lunch break

›14:00 (40min)

Session 2.3: Hot subdwarf properties from asteroseismic studies
Chair: Maja Vuckovic

14:00 - 14:40 (40min)

Session 2.3: Hot subdwarf properties from asteroseismic studies

Chair: Maja Vuckovic

› Asteroseismology of Kepler/K2 white dwarf stars - Barbara Castanheira, Baylor University 14:00-14:20 (20min)

› Asteroseismology of Lambda Bootis stars - Benjamin Fernando, Oxford University 14:20-14:40 (20min)

›14:40 (30min)

Discussion closing Session 2
Chaired by Tony Lynas-Gray & Marilyn Latour

14:40 - 15:10 (30min)

Discussion closing Session 2

Chaired by Tony Lynas-Gray & Marilyn Latour

›15:10 (10min)

Introduction to Session 3
Zhanwen Han

15:10 - 15:20 (10min)

Introduction to Session 3

Zhanwen Han

›15:20 (20min)

Session 3.1: Hot subdwarf populations and related objects
Chair: Nicole Reindl

15:20 - 15:40 (20min)

Session 3.1: Hot subdwarf populations and related objects

Chair: Nicole Reindl

› Gaia's treasure chest - The quest to compile an all-sky sample of hot subdwarfs - Stephan Geier, University of Potsdam 15:20-15:40 (20min)

›15:40 (20min)

Coffee break

15:40 - 16:00 (20min)

Coffee break

›16:10 (1h05)

Session 3.1: Hot subdwarf populations and related objects
Chair: Nicole Reindl

16:10 - 17:15 (1h05)

Session 3.1: Hot subdwarf populations and related objects

Chair: Nicole Reindl

› Kinematics of sdB and sdOB stars from GAIA and SDSS data - Alexander Bastian, Institute for Physics and Astronomy, University of Potsdam 16:10-16:30 (20min)

› Quantitative spectral analyses of blue horizontal branch stars - Steven Hämmerich, Dr. Karl Remeis Observatory & ECAP, University Erlangen-Nürnberg 16:30-16:50 (20min)

› Gaia Data Release 2 Catalogue of Extremely-low Mass White Dwarf Candidates - Ingrid Pelisoli, University of Potsdam 16:50-16:55 (05min)

› The mystery on the origin of extreme horizontal branch stars in globular clusters - Annalisa Calamida, SPACE TELESCOPE SCIENCE INSTITUTE - AURA 16:55-17:15 (20min)

›17:15 (30min)

Adjourn / Poster viewing

17:15 - 17:45 (30min)

Adjourn / Poster viewing