We are pleased to announce that the 11th international conference on Hot Subdwarf Stars and Related Objects will be held at Armagh Observatory and Planetarium on 11th – 15th September 2023. To indicate your interest in participating, please send an email with your name, institute and email address to sdob11@armagh.ac.uk
The third announcement can be read here, and our conference code of conduct can be read here.
Delegates should also be aware that sdOB11 will be held in conjunction with the 5th international workshop on AM Canum Venaticorum stars, which will be held on 5th – 8th September 2023. Click here for more information.
sdOB11 is supported by funding from the Royal Astronomical Society and Armagh City, Banbridge & Craigavon Borough Council.
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Registration and Deadlines
- Please register for the conference here.
- Please pay here to complete your registration for sdOB11, or here for the sdOB11+AMCVn5 ticket (please use code CONFAOP23).
- Please submit your contribution title and abstract here.
Early registration: July 16th.Abstract submission (talk/poster): July 16th.Hotel Reservation (Armagh City Hotel discounted rate): July 16th.
Online payment will remain open until the conference start date, although delegates may also pay at the registration desk upon arrival. Refunds for cancellations will be considered on a case by case basis.
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Programme
The conference programme will consider the following topics:• The origin and evolution of hot subdwarf stars : standard and alternative pathways• Substellar and planetary companions to hot subdwarf stars• Hot subdwarfs in the field, clusters, and galaxies• Impact of large surveys and hot subdwarf population studies• Atmospheric properties of hot subdwarf stars• Hot subdwarfs in binary and multiple star systems• Pulsating hot subdwarfs and asteroseismology• Hot subdwarfs as laboratories for stellar physics : convection, diffusion, atomic data, tides, mergers, common envelopes• Links to extremely low mass white dwarfs and other related objectsPlans for the social programme currently include a welcome reception, an Irish night at the Navan fort, ancient seat of the Kings of Ulster, an excursion into the countryside around Armagh including traditional Irish industry, tours of Armagh City and the Armagh Observatory, and the conference dinner. Subject to demand, there will be the possibility of a tour to the Giant’s Causeway and Bushmills distillery on Saturday 9 September.
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Travel
Armagh is served by three airports:
Travel to Armagh from the airport is via bus, taxi or rented car. There is no train station in Armagh. The nearest one is in Portadown.
If travelling from one of the Belfast airports, you can get a bus into Belfast city centre (service 300 for BFS, 600 for BHD) before taking another bus into Armagh. This will be either the 251 or the 270.
On the Belfast International Airport website there is a link to their official taxi operator, Belfast Airport Taxis, where you can calculate the fare and book a taxi. The price to Armagh should be £76 (one way).
https://www.belfastairport.com/to-from/by-taxiGeorge Best International Airport’s taxi partner is Value Cabs and taxis can be pre-booked. The price to Armagh should be £86 (one way).
https://www.belfastcityairport.com/TaxisFrom Dublin airport, the X4 bus service (Dublin to Derry~Londonderry) stops in Armagh, however this bus is quite infrequent. A more regular service from Dublin airport is the X1 (Dublin to Belfast), which leaves the airport every hour and stops in Newry. From Newry, you can then travel on to Armagh, either via bus or taxi. Please note that the X4 and X1 will not accept card payments on the bus and may also be very busy. You may wish to book your bus ticket online (on the translink website below) to ensure that you get a seat.
Up-to-date timetables and prices for buses and trains can be found at https://www.translink.co.uk/. You can also book tickets online here.
Delegates are responsible for ensuring their own eligibility to enter the UK and, if required, for obtaining the appropriate visa. The organisers will issue a formal letter of invitation to any bona fide delegates that require such a letter for visa or funding purposes. If required, please write to sdob11@armagh.ac.uk (Subject: sdob11 invitation) and provide your full name, institute, and contact details.
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Accommodation
A block of 40 rooms has been reserved for the nights of Sunday 10 – Thursday 14 September at the Armagh City Hotel. The room booking is inclusive of full breakfast, free wifi, use of the leisure club, complimentary car parking, and VAT. To book a room, delegates must contact the hotel’s Central Reservations office on (+44)28 3751 8888 and choose option 1, or email reservations@armaghcityhotel.com. A credit/debit card number will be required to guarantee the booking. You must quote “Armagh Observatory” at the time of booking to qualify for the discounted rate. The block reservation will expire six weeks prior to the conference. Delegates wishing to stay additional nights should book early to avoid disappointment.
The Visit Armagh webpages offer more recommendations for accommodation, including self-catered options. You may find other options not listed on the above websites from Airbnb and booking.com.
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Rationale
On the Hertzsprung-Russell diagram subluminous O and B stars lie below the massive O and B stars on the upper main sequence, and above the upper (young) end of the white dwarf sequence. They are all evolved stars, mostly about half a solar mass, mostly converting helium to carbon in their cores, and mostly “stripped” of their hydrogen outer layers. Most have previously finished hydrogen-burning and become red giants, where a nearby companion star has removed their outer layers. Despite this general picture, there are many, many, other star histories that could make hot subdwarfs of different types, either as the product of a collision between two white dwarfs, as the remnant of a star that failed to become a red giant, or by means as yet unknown. The world’s largest telescopes including ESO’s VLT and SALT, and spacecraft including Gaia, Kepler and TESS are transforming our view of these often exotic stars, revealing peculiar surface chemistries, remarkable binary orbits and puzzling pulsation properties. sdOB11 will provide an opportunity to share latest progress and address unsolved problems.
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SOC/LOC
Scientific Organising Committee: Simon Jeffery (chair), Valerie Van Grootel, Stéphane Charpinet,
Zhanwen Han, Maja Vuckovic, Stephan Geier, Annalisa Calamida, Thomas Kupfer, Brad Barlow,
Veronika Schaffenroth, JJ Hermes, Holly Preece, Andrzej BaranLocal Organising Committee: Marc Sarzi, Heather Alexander, Simon Jeffery, Gavin Ramsay, Sinead Mackle, Laura Scott, Aileen McKee, Ceara Ryan
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Participants
- Larissa Antunes Amaral
- Brad Barlow
- Özgür Baştürk
- Evan Bauer
- Aakash Bhat
- Conor Byrne
- Stephane Charpinet
- Xuefei Chen
- Richard Culpan
- Harry Dawson
- Kunal Prashant Deshmukh
- Matti Dorsch
- Semih Filiz
- James Garbutt
- Stephan Geier
- Uli Heber
- Simon Jeffery
- David Kilkenny
- Thomas Kupfer
- Marilyn Latour
- Jiangdan Li
- Zhenwei Li
- Jerry Liu
- Zhengwei Liu
- Isaac Daniel Lopez
- Anthony Eugene Lynas-Gray
- Chenglong Lyu
- Xiao-Yu Ma
- Xiangcun Meng
- John Mora
- Ralf Napiwotzki
- Roy Østensen
- Steven Parsons
- Ingrid Pelisoli
- Asish Philip Monai
- Philipp Podsiadlowski
- Holly Preece
- Max Pritzkuleit
- Abinaya Swaruba Rajamuthukumar
- Tahina Princy Ranaivomanana
- Thomas Rauch
- Mike Reed
- Nicolas Rodriguez-Segovia
- Eduardo Alfredo Arancibia Rojas
- Veronika Schaffenroth
- Laura Scott
- Roberto Silvotti
- Bryce Smith
- Edward Snowdon
- Oliver Steppohn
- Wenchao Su
- John H. Telting
- Murat Uzundag
- Valerie Van Grootel
- Luqian Wang
- Keyu Xing
- Heran Xiong
- Xianfei Zhang
- Weikai Zong
