HDEF4 Draft Science Programme
VERSION 29.08.18
SUNDAY
19:00 – 21:00 WELCOME RECEPTION AT ARMAGH CITY HOTEL
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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
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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
10:30 Tea/Coffee
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
12:30 Lunch
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
18.30 RECEPTION WITH THE LORD MAYOR OF ARMAGH
19:30 DINNER
20:30 BUS
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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
10:30 Tea/Coffee
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
12.30 EXCURSION
13:00 ARGORY HOUSE (+LUNCH)
15:30 ARMAGH CIDER COMPANY
18:00 RETURN TO CITY HOTEL
19:00 PUBLIC LECTURE @ PLANETARIUM
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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 15154-5258 - what can we learn from the older twins of Sakurai's star
+1: ...
10:30 Tea/Coffee
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
12:30 Lunch
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
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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
12:30 Lunch
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
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SATURDAY
08:30 OPTIONAL EXCURSION TO GIANTS CAUSEWAY AND BUSHMILLS DISTILLERY