HDEF4 Draft Science Programme
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1 HDEF4 Draft Science Programme VERSION SUNDAY 19:00 21:00 WELCOME RECEPTION AT ARMAGH CITY HOTEL MONDAY 08:30 Registration 09:30 Welcome - Introduction Michael Burton: Welcome (10) Simon Jeffery: Introduction (20) 10:00 Surveys and Statistics Session 1 1x35 + 1x18 (chair: Geoff Clayton) Patrick Tisserand: Results from a first dedicated spectroscopic search for new RCB stars over the entire sky Pamela Martin: Distances and luminosities of hydrogen-deficient stars in the Galaxy 10:50 Tea/Coffee + Registration 11:20 (contd) Session 2 1x35 + 1x18 (chair: Geoff Clayton) Stephan Geier: High-velocity stars Ulrich Heber: He sdo stars in the Gaia era 12:20 Lunch + Registration 13:20 High-Mass Stars Session 3 1x35 + 3x18 (chair: Nicole Reindl) Ylva Götberg: Stripped Massive stars Andreas Sander: Spectral modelling and analyses of high- and low-mass Wolf-Rayet stars Joseph Callingham: Anisotropic wind in a new massive system: a window onto critical rotation and gamma-ray bursts Eliceth Rojas Montes: Testing how massive stars evolve, lose mass, and collapse at low metal content 14:50 Tea/Coffee Session 4 1x35 + 3x18 (chair: Nicole Reindl) 15:10 (contd) Jorick Vink: Mass-loss predictions for Hydrogen deficient stars Avishai Gilkis: Angular momentum evolution in progenitors of hydrogen-deficient core-collapse supernovae (late talk) 15:45 Binaries Thomas Kupfer: AM CVn stars: an overview Matthew Green: Gaia14aae: An eclipsing AM CVn that challenges formation models 16:40 BREAK 18:00 RECEPTION AT PLANETARIUM AND TOURS OF THE OBSERVATORY 19:00 CONFERENCE PHOTOGRAPH 20:00 END
2 TUESDAY 09:00 Low-Mass Stars Session 5 1x35 + 2x18 + sparklers x 18 (chair: Veronika Schaffenroth) Stephen Justham: Lessons about formation processes from strange hot subdwarfs Joris Vos: Using wide sdb+ms binaries to constrain RLOF models Amanda Karakas: Very metal-rich hydrogen deficient stars SPARKLERS 11:00 (contd). Session 6 2x35 + 1x18 (chair: Veronika Schaffenroth) Peter Nemeth: He-sdB and He-sdO stars JJ Hermes: The menagerie of hydrogen-deficient white dwarfs Alina Istrate: Extremely low-mass white dwarfs: the story so far 13:30 (contd) Session 7 1x35 + 2x18 (chair: Thomas Kupfer) Nicole Reindl: Recent Progress on our Understanding of PG1159 and O(He) stars Thomas Rauch: DO white dwarfs Marylin Latour: The extreme horizontal branch population of Omega Centauri 14:40 Tea/Coffee Session 8 Discussion x 90 15:00 Connections I -- H-deficient stars from and in binaries DISCUSSION I - THE ROLE OF BINARY STARS LED BY ROBERT IZZARD 16:30 TOUR OF NAVAN FORT RECEPTION WITH THE LORD MAYOR OF ARMAGH 19:30 DINNER 20:30 BUS
3 WEDNESDAY 09:00 R CrB Stars Session 9 1x35 + 3x18 (chair: Amanda Karakas) Geoff Clayton: R Coronae Borealis Stars, Products of Stellar Mergers Gajendra Pandey: Abundances in Extreme Helium and R CrB Stars Anirban Bhowmick: Detection of fluorine in hot Extreme Helium Stars Hema B. P.: Discovery of the Relatively H-poor metal rich Giants in the Globular Cluster omega Centauri 11:00 Ejecta Session 10 1x35 + 3x18 (chair: Amanda Karakas) Edward Montiel: Circumstellar Dust Shells: Clues to the Evolution of R Coronae Borealis Stars Kameswara Rao: RCrB minima and dust ejection Anibal Garcia-Hernandez: Dust and Fullerenes in RCrB ejecta Mark Walker: Hydrogen-deficient stellar surfaces via accretion from hydrogen snow clouds EXCURSION 13:00 ARGORY HOUSE (+LUNCH) 15:30 ARMAGH CIDER COMPANY 18:00 RETURN TO CITY HOTEL 19:00 PUBLIC PLANETARIUM
4 THURSDAY Session 11: 1x35 + 2x18 (chair: Patirck Tisserand) 09:00 Transients Peter van Hoof: Observations of born-again stars Marcelo M. Miller Bertolami: An inside-out planetary nebula around a [WC] star in the making Stefan Kimeswenger: New spectroscopy of V605 Aql and IRAS what can we learn from the older twins of Sakurai's star +1:... 11:00 Connections II -- H-deficient stars from birth to death Session 12: 1x35 + 2x18 + sparklers (chair: Patirck Tisserand) Ashley Ruiter: CO+He white dwarf merger channels Josiah Schwab: Double White Dwarf Mergers and the Formation of R Coronae Borealis Stars Falk Herwig: The very-late thermal pulse and similar events in rapidly accreting white dwarfs: 3D hydrodynamic simulations and the i process nucleosynthesis SPARKLERS Session 13 Discussion x 90 13:30 Connections II -- H-deficient stars from birth to death DISCUSSION II - DOUBLE WHITE DWARF MERGERS AND THE RCrB CHANNELS - LED BY FALK HERWIG 15:00 Tea/Coffee 15:30 WALKING TOUR OF ARMAGH (inc ROBINSON LIBRARY, CATHEDRALS, ) 19:00 CONFERENCE DINNER 19:30 DINNER
5 FRIDAY 09:30 Explosions Session 14 1x35 + 2x18 (chair: Ashley Ruiter) Danny Steeghs: Hydrogen-deficient novae Patrick Neunteufel: Hydrogen-deficient single degenerate binaries as progenitors of astrophysical transients Mridweeka Singh: Peculiar Supernovae of type Iax: The case study of SN 2014dt 10:40 Tea/Coffee 11:10 Pulsation Session 15 1x35 +2x18 (chair: Ashley Ruiter) David Kilkenny: Observations of Pulsations in Hydrogen-deficient Stars Conor Byrne: Post-common-envelope binary stars: Radiative levitation and blue large-amplitude pulsators 13:30 (contd) Session 16 2x18 + (chair: Anthony Lynas-Gray) Hideyuki Saio: Pulsations in H-deficient stars Simon Jeffery: V652 Herculis: The born-again rocket star Summary Robert Izzard 15:00 CLOSE of CONFERENCE Tea/Coffee SATURDAY 08:30 OPTIONAL EXCURSION TO GIANTS CAUSEWAY AND BUSHMILLS DISTILLERY
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