Seminars

Thur Sept 22nd Mike Reed (Missouri SU, USA) Asteroseismology of Hot Horizontal Branch Stars

Thur Sept 29th Tim Cunningham (Warwick) White dwarfs as probes of convective overshoot and evolved exoplanetary systems

Thur Oct 6th Grace Telford (Rutgers, USA) New Observational Insights into the Astrophysics of Extremely Metal-Poor O Stars

Thur Oct 13th Holly Preece (MPIA, Germany) Hot subdwarf B stars

Thur Oct 20st Mark Magee (Portsmouth) Type Ia supernovae: The curious case of early light curves & bumps

Thur Oct 27th Dmitrii Kolotkov (Warwick) What makes coronal waves wavy?

Thur Nov 3rd Ingrid Pelisoli (Warwick) Stars don’t self-isolate: some remarkable outcomes of binary evolution

Thur Nov 24th Olivia Jones (ATC, ROE) JWST observations of star formation, evolved stars and stellar populations 

Thur Dec 1st Joe Callingham (Leiden, Netherlands) Radio stars and exoplanets

Thur Dec 8th Rebecca Smethurst (Oxford) The growth of supermassive black holes in the absence of mergers and the effect on their host galaxies

Note: All seminars in this season are held online via Zoom although those on site at AOP are very welcome to meet in the Library for the seminar. Please contact seminar@armagh.ac.uk to get subscribed to the latest updates about the AOP research seminar. Regular seminar time slot: Thursday, 2 pm (this can differ for overseas speakers).

20th January – Jared Goldberg (UCSB, USA) Convective Properties of 3D Red Supergiant Envelopes and their resulting Supernova Shock Breakout

27th January – Megan Schwamb (QUB) Exploring the Edges of the Solar System: Past, Present, and Future

10th February – Richard Morton (Northumbria University) Exploring the corona with Alfvenic waves

17th February – Sasha Tchekhovskoy (Northwestern, USA) What can black hole jets do for you?

24th February – Shenghua Yu (National Astronomical Observatory of China, Beijing) The mHz-Hz gravitational waves induced by double compact objects

3rd March – James Blake (University of Warwick) The Sticky Issue of Space Debris

10th March – Valerie van Grootel (University of Liege, Belgium) A search for planets around hot subdwarfs

24th March – David Eden (AOP) What causes stars to form? 

31st March – Leonard Burtscher (Leiden University, The Netherlands) Astronomy and the climate crisis

7th April — Alison Laird (York) Massive stars and chemical evolution: the impact of nuclear reactions

5th May — Gregg Wade (Royal Military College in Kingston, Canada) Stellar magnetism across evolutionary timescales

19th May — Lauren Doyle (Warwick) Exoplanets and low mass stars

26th May — Alessandro Loni (INAF, Cagliari, Italy) The making of a lenticular galaxy in the Fornax cluster: NGC 1436

16th June — Avi Loeb (Harvard, USA) The Galileo Project: In Search for Technological Interstellar Objects

23rd June — Conor Byrne (Warwick) Binary Stellar Populations: From Variable Stars in the Milky Way to Young Stars in the Distant Universe

Note: Due to COVID19, all seminars in this season are held online via Zoom. Please contact seminar@armagh.ac.uk to get subscribed to the latest updates about the AOP research seminar. Regular seminar time slot: Thursday, 12 pm noon (this can differ for oversea speakers).

Thu, 08 Oct 2020: Chiaki Kobayashi (University of Hertfordshire)

Thu, 15 Oct 2020: no seminar due to ULLYSES workshop

Thu, 22 Oct 2020: Claudia Lagos (ICRAR, Perth)

Thu, 29 Oct 2020: V. Mauricio Gomez Gonzalez (UNAM, Morelia)

Thu, 12 Nov 2020: Gloria Koenigsberger (UNAM, ICF)

Thu, 19 Nov 2020: Martin Bureau (Oxford University)

Thu, 26 Nov 2020: Anne-Marie Weijmans (University of St Andrews)

Thu, 03 Dec 2020: Evgenia Koumpia (University of Leeds)

Thu, 10 Dec 2020: Sadegh Khochfar (University of Edinburgh)

Thu, 26 Mar 2020: Simon Jeffery (DY Cen — from red giant to [WC] star in 100 years — with strontium)

Thu, 02 Apr 2020: Michael Burton (A method for mapping the distribution of aliphatic carbon in interstellar dust)

Thu, 09 Apr 2020: Apostolos Christou (The origin of Neptune’s peculiar moons)

Thu, 16 Apr 2020: Marc Sarzi (On the Initial Stellar Mass Function in early-type galaxies)

Thu, 23 Apr 2020: Stefano Bagnulo (A high-precision survey of magnetic fields in white dwarfs within 20 parsec from the Sun)

Thu, 30 Apr 2020: Rok Nežič (Polarimetric study of 8 Kreutz comets observed by STEREO)

Thu 07 May 2020: Michael Burton (An introduction to the Cherenkov Telescope Array)

Thu, 14 May 2020: Lauren Doyle (Solar and Stellar Flares and Their Connection)

Thu, 21 May 2020: Erin Higgins (The evolution of massive stars in the Galaxy and Magellanic Clouds)

Thu, 28 May 2020: QUB/AOP PhD students meeting

Thu, 04 June 2020: Noel Richardson (ERAU Prescott, USA) (Constraints on the post-main sequence evolution of massive stars with high precision orbits of evolved systems)

Thu, 11 June 2020: Tony Moffat (UdeM, Canada) (Small Satellites, Big Stars: Results from the BRITE nano-satellites on massive stars)

Thu, 18 June 2020: Rico Ignace (ETSU, USA) (Diagnostics of the Organized Winds of Massive Stars)

Thu, 25 June 2020: No Seminar

Thu, 02 July 2020: Heloise F. Stevance (Univ. of Auckland, NZ)

Thu, 09 July 2020: George Seabroke (UCL)

Thu, 16 July 2020: Ralphael Hirschi (Keele University)

Thu, 23 July 2020: Maritza Arlene Lara-Lopez

Thu, 30 July 2020: Victoria Grinberg (Universität Tübingen)

Thu, 05 Sep 2019: INAM

Wed, 18 Sep 2019: Holly Preece (The Effect of Tidal Interactions on Hot Subdwarf B Stars and Their Pulsations.)

Thu, 10 Oct 2019: Christopher Duffy (The Spatial and Temporal Variation of Mg II Emission Profiles in the Solar Atmosphere)

Thu, 17 Oct 2019: Jorick Vink (The heaviest stars and black holes in the Universe)

Thu, 24 Oct 2019: Apostolos Christou (The Martian Trojans: a natural experiment in asteroid evolution.)

Thu, 3O Oct 2019: Gavin Ramsay (Measuring the brightness of stars from space: flares, outbursts, exoplanets and the inside of stars.)

Thu, 31 Oct 2019: Borislav Nedelchev (Using the MANGA IFU survey to trace the importance of accretion events in the triggering of optical AGN activity and the formation of kinematically distinct components.)

Thu, 07 Nov 2019: Andreas Sander (Next-generation stellar atmosphere models: From understanding spectra to creating a virtual laboratory)

Thu, 14 Nov 2019: Sebastien Viaene (How to measure dust in galaxies? A panchromatic perspective.)

Thu, 12 Dec 2019: Tomer Shenar (Do we understand the progenitors of black holes and neutron stars?)

Thu, 06 Feb 2020: Conor Byrne (Atomic Diffusion and Pulsation in Post-Common-Envelope Binary Stars)

Wed, 12 Feb 2020: Eamon Scullion (SULIS: Solar cUbesats for Linked Imaging Spectropolarmetry)

Fri, 14 Feb 2020: Chris Lintott

Mon, 17 Feb 2020: Martin Hendry (The Dawn of Gravitational-Wave Cosmology)

Wed, 26 Mar 2020: Durgesh Tripathi (The First Space Solar Observatory of the Indian Space Research Organisation-Aditya-L1)

Thu, 27 Feb 2020: Ioana Boian (Connecting massive stars to interacting supernovae)

Fri, 28 Feb 2020: Jonathan MacKey (Magnetised Stellar-Wind Bubbles)

Wed, 04 Mar 2020: Abhishek Kumar Srivastava (Recent Advances in Global and Local Heating Mechanisms of the Solar Atmosphere)

Thu, 05 Mar 2020: Joachim Bestenlehner (The most massive stars in the Local Group: the cluster R136)

Thu, 12 Mar 2020: Helge Todt (Spectral analysis of born-again central stars of Planetary Nebulae)

Thu, 19 Mar 2020: Chiaki Kobayashi (The origin of elements and their evolution in galaxies)

Fri, 27 Mar 2020: Niels Warburton (Gravitational waves from galactic cores)

Helge Todt (University of Potsdam, 12 Mar 2020, Germany, 12pm)
Spectral analysis of born-again central stars of Planetary Nebulae

Joachim Bestenlehner (University of Sheffield, 05 Mar 2020, 12pm)
The most massive stars in the Local Group: the cluster R136

Jonathan MacKey (DIAS, 28 Feb 2020, 12pm)
Magnetised Stellar-Wind Bubbles

Ioana Boian (Trinity College Dublin, 27 Feb 2020, 12pm)
Connecting massive stars to interacting supernovae

Durgesh Tripathi (IUCAA, Pune, India, 26 Feb 2020, 11:30pm)
The First Space Solar Observatory of the Indian Space Research Organisation-Aditya-L1

Martin Hendry (University of Glasgow, 17 Feb 2020, 3pm)
The Dawn of Gravitational Wave Cosmology

Eamon Scullion (Northumbria University, 12 Feb 2020, 12 pm)
SULIS: Solar cUbesats for Linked Imaging Spectropolarimetry

Conor Byrne (AOP, 6 Feb 2020, 12pm)
Atomic Diffusion and Pulsation in Post-Common-Envelope Binary Stars

Tomer Shenar (KU Leuven, 12 Dec 2019, 12pm)
Do we understand the progenitors of black holes and neutron stars.

Sebastien Viaene (Ghent University, 14 Nov 2019, 12pm)
How to measure dust in galaxies? A panchromatic perspective.

Andreas Sander (AOP, 07 Nov 2019, 12pm)
Next-generation stellar atmosphere models: From understanding spectra to creating a virtual laboratory

Borislav Nedelchev (AOP, 31 Oct 2019, 3pm)
Using the MANGA IFU survey to trace the importance of accretion events in the triggering of optical AGN activity and the formation of kinematically distinct components.

Apostolos Christou (AOP, 24 Oct 2019, 12 pm)
The Martian Trojans: a natural experiment in asteroid evolution.

Jorick Vink (AOP, 17 Oct 2019, 12pm)
The heaviest stars and black holes in the Universe

Christopher Duffy (AOP, 10 Oct 2019, 12pm)
The Spatial and Temporal Variation of Mg II Emission Profiles in the Solar Atmosphere

Gavin Ramsay (AOP, 3 Oct 2019, 12pm)
Measuring the brightness of stars from space: flares, outbursts, exoplanets and the inside of stars.

Holly Preece (AOP, 18 Sep 2019, 12 pm)
The Effect of Tidal Interactions on Hot Subdwarf B Stars and Their Pulsations.

Abstract:

Hot subdwarf B stars are evolved core He-burning stars formed by binary interactions with a nearby stellar companion. Many sdBs reside in close binaries which experience strong tides yet the systems are most likely not tidally synchronized. These stars have been both predicted and observed to pulsate with multiple frequencies. Asteroseismological analysis of the observed pulsations shows that they do not quite fit with the theoretical models, especially in the close binary systems. The tidal interactions effect the expected frequencies of pulsation in these stars.