The Be Star Newsletter, Volume 37 - February 2005

[Be Star Newsletter Home]

MEETING ANNOUNCEMENT: Workshop on "Stars with the B[e] phenomenon" 10 - 16 July 2005 Island of Vlieland, The Netherlands Michaela Kraus Astronomical Institute, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands email:  M.Kraus@phys.uu.nl Received: February 2, 2005 * CONTACT : e-mail: M.Kraus@phys.uu.nl conference web site: http://www.astro.uu.nl/~kraus/b-e-conf/ * IMPORTANT DEADLINES : Financial support : February 15, 2005 Abstract submission : March 31, 2005 Registration : April 30, 2005 Hotel reservation : May 15, 2005 Payment (Registration fee + hotel deposit) : May 15, 2005 Workshop : July 10 - July 16, 2005 * SCIENTIFIC RATIONALE : During the last years, stars showing the B[e] phenomenon have always been treated as an undesirable branch of astrophysics and were always only side-products on conferences dealing with stars and stellar evolution. In fact, the last real conference on B[e] stars took place 7 years ago in Paris although the major problem, i.e. the question of which mechanism causes the B[e] phenomenon in stars that are in such a varity of evolutionary phases, is still far from being solved. Stars with the B[e] phenomenon are found in almost every evolutionary phase. There are Herbig Ae/B[e] stars, B[e] supergiants, compact planetary nebulae, symbiotic objects, and a huge number of yet unclassified objects showing the B[e] phenomenon. Even these unclassified stars have recently been subgrouped, one subgroup being stars with warm dust. Inspecting this list it is clear, that the B[e] phenomenon is not restricted to stars of special initial condition (like e.g. initial mass) which makes it difficult to find a general mechanism for the phenomenon. The purpose of this workshop is to gather experts from theory dealing with stellar evolution, stellar atmospheres, stellar winds, mass loss and outflowing disks, as well as from the observational side covering all wavelength bands to present and discuss the latest progresses observationally and theoretically in the field of B[e] stars. Theoretical progress has mainly been made in the calculation of stellar evolution models including rotation and magnetic fields, and in first steps of including the effect of non-sphericity in stellar atmosphere models. In the observational part, the most important results in B[e] star research have been found from recent space missions like ISO, IUE and HST. In addition, high-resolution observations in different wavelength regions together with interferometric and polarimetric observations revealed newest insight into the geometry and chemical composition of the circumstellar matter. We especially want to focus on the following questions : What causes the B[e] phenomenon? Does every B (and O?) star undergo a B[e] phase during its evolution? Which roles might play rotation, magnetic fields and especially binarity? What is the evolutionary connection of B[e] supergiants with other post-main sequence massive stars, especially with LBVs? What is the evolutionary status of the so-called "unclassified" B[e] stars? Is there any connection between the classical Be stars and B[e] stars? * SCIENTIFIC ORGANIZING COMMITTEE : Francisco de Araujo Brazil (araujo@on.br) Vera Arkhipova Russia (vera@sai.msu.ru) Jon Bjorkman USA (jbjorkman@mac.com) Karen Bjorkman USA (karen@astro.utoledo.edu) Roberta Humphreys USA (roberta@umn.edu) Michaela Kraus The Netherlands (M.Kraus@phys.uu.nl) (chair) Georges Meynet Switzerland (Georges.Meynet@obs.unige.ch) Anatoly Mirochnichenko USA/Russia (anatoly@physics.utoledo.edu) (co-chair) Antonella Nota USA (nota@stsci.edu) Philippe Stee France (Philippe.Stee@obs-azur.fr) * LOCAL ORGANIZING COMMITTEE : Michaela Kraus Utrecht (M.Kraus@phys.uu.nl) (chair) Allard-Jan van Marle Utrecht (A.vanMarle@astro.uu.nl) Dieter Nickeler Utrecht (D.H.Nickeler@phys.uu.nl) Marion Wijburg Utrecht (M.N.Wijburg@astro.uu.nl) Ed van der Zalm Utrecht (E.B.J.vanderZalm@astro.uu.nl) * SCIENTIFIC ORGANIZATION : Each session will be composed of invited reviews, contributed oral presentations and posters. Posters will be at display during the entire conference and there will be plenty of time for poster viewing during breaks. Proceedings of the conference will be published with ASP including poster presentations and discussion sessions. * PRELIMINARY PROGRAM : We want to start our workshop with a reception on Sunday evening. For the presentations (talks and poster sessions) we plan to have a program from Monday morning until Friday noon, with the conference summary and closing after lunch. In addition, the Wednesday afternoon is free to join one of the outings and we will have a BBQ in the evening. After the BBQ we will make a trip to the one and only dessert in the Netherlands with a special constructed vehicle, the Vliehors-Express, and enjoy the summer evening at a camp fire with musik and drinks. On Thursday evening we will have the conference dinner. The session on Friday will stop early enough for those who want to leave the Island on Friday afternoon (ferry will leave at 16:45). Preliminary Program (including confirmed and invited speakers) Stars with the B[e] phenomenon within and beyond the Milky Way The B[e] phenomenon Jean-Pierre Swings Anatoly Miroshnichenko (SOC, co-chair) B[e] stars and candidates beyond the Milky Way Rene Walterbos (tbc) Stellar evolution, stellar winds and mass loss of B[e] stars John Hillier Georges Meynet (SOC) Pre-main sequence evolution : The Herbig Ae/B[e] stars Herbig Ae/Be and Herbig Ae/B[e] stars Rens Waters Post-main sequence evolution : The B[e] supergiants B[e] supergiants in the Magellanic Clouds Franz-Joseph Zickgraf Observational diagnostics of Be star and B[e] supergiant disks Anne Marie Hubert Antonio Mario Magalhaes Karen Bjorkman (SOC) Philippe Stee (SOC) Formation and evolution of disks around classical Be stars Stan Owocki Formation and evolution of disks around B[e] supergiants Jon Bjorkman (SOC, tbc) Is there any link between classical Be stars and B[e] supergiants? (General discussion) Post-main sequence evolution : Luminous Blue Variables The general appearance and behaviour of LBVs Antonella Nota (SOC) Is there an evolutionary link between B[e] supergiants and LBVs? (General discussion) The unclassified B[e] stars Francisco X. de Araujo (SOC) Anatoly Miroshnichenko (SOC) Vera Arkhipova (SOC) The B[e] phenomenon in binaries Circumbinary disk and/or common envelope evolution as a possible scenario for the B[e] phenomenon ? Philippe Podsiadliwski B[e]/X-ray binaries Simon Clark (tbc) Disks and winds in symbiotic systems Vera Arkhipova (SOC) Conference summary Henny Lamers * INVITED SPEAKERS : Simon Clark (University College London) John Hillier (University of Pittsburgh) Anne-Marie Hubert (Observatoire de Paris-Meudon) Antonio Mario Maghalaes (Universidade de Sao Paulo) Stan Owocki (University of Delaware) Philippe Podsiadlowski (Oxford University) Jean-Pierre Swings (University of Liege) Rene Walterbos (New Mexico State University) Rens Waters (University of Amsterdam) Franz-Josef Zickgraf (Sternwarte Hamburg) * ABSTRACTS : There is an abstract form available to provide your title, abstract and the session into which your contribution (either talk or poster) fits best. The abstract will be included into the abstract booklet which every participant will recieve upon arrival. Submission deadline for the abstracts is March 31 * REGISTRATION : On the web-page there is a registration form that can be filled in and submitted online. Please submit this form before April 30. * REGISTRATION FEE : The registration fee is 320 Euro and includes a copy of the proceedings book, the abstract booklet, a reception on Sunday evening, conference dinner on Thursday evening, refreshments during coffee breaks, and the rent of meeting room and facilities. The registration fee together with the hotel deposit has to be paid before May 15. Details about payment are provided on the hotel reservation form (see "Accomodation"). * ACCOMODATION : We made a pre-reservation for 45 twin bedded rooms in the Strandhotel Seeduyn. Please download and fill in the hotel reservation form which is available on the web-page. Return the reservation form before May 15 preferentially by fax to the number +31-30-253-5201 or by mail to Sterrenkundig Instituut, Universiteit Utrecht, P.O.Box 80000, NL-3508 TA Utrecht, The Netherlands If you want to share your room with another participant, please indicate this on the form. If you know already with whom you intend to share your room, provide the name of the other participant. People who don't know with whom to share a room, will be matched by the organizers. People who would like to have a single room have to pay 30 Euro more per night. For those who want to bring their family along, it is possible to have a family room (3 or 4 beds). The costs for the hotel package based on an arrivel on Sunday, departure on Saturday are 600 Euro in double occupancy, and 780 Euro in single occupancy These costs include 6 nights (including all taxes) 6 breakfasts 5 lunches (Monday - Friday) 3 dinner (Monday, Tuesday, Wednesday) 1 ferry return ticket (Harlingen Haven - Vlieland) 1 rented bike for whole workshop period We will ask for a 100 Euro hotel deposit to be paid with the registration fee before May 15. This deposit will not be refunded in case of cancellation 30 days or less before the workshop. The hotel deposit of 100 Euro will be subtracted from your total bill which you have to settle with the hotel before your departure. The payment details are indicated on the reservation form. We accept VISA and MASTER CARD, only. For participants from Europe, we offer an inter-european bank transfer to the account specified on bottom of the reservation form. Please make sure that the bank transfer costs are for you!! * CONFERENCE LOCATION : The workshop will take place in this very nice and modern beach hotel with name "Strandhotel Seeduyn" on the island of Vlieland. More information on Vlieland is available on our web-page. * ARRIVAL : The island of Vlieland can only be reached by ferry transportation. Ferries travel regularly between Harlingen Haven (= Harlingen Harbour) and Vlieland. There are two kinds of ferries: the regular one, and a fast one (which is more expensive). The conference hotel will make reservations for the tickets. If more than 20 people will travel with the same ferry, there is a chance for group reduction. It is therefore necessary that you provide the information on the ferry which you intend to take with your hotel reservation form! Harlingen Haven has a train station (called Harlingen Haven) which can be reached from everywhere in the Netherlands. If you arrive by plane in Amsterdam (Schiphol airport), you will have to change train at least twice (depending on the time) to Harlingen Haven. The current fares for train tickets from Schiphol to Harlingen Haven is 28.40 Euro. Informations on the timetables and connections for dutch trains can be found at: http://www.ns.nl/ . Once you arrive in Harlingen Haven (which is the last train station, beyond Harlingen Central Station), there will be someone from the Local Organizing Committee to welcome you to provide you the ferry ticket and help you with the luggage transfer. The trip from Harlingen Haven to Vlieland will take about 100 minutes. When you arrive on Vlieland, somebody from the hotel will welcome you, help you with your luggage which will be brought directly to the hotel, and provide you a bike (if you have ordered one) with which you can continue your trip to the hotel experiencing already the beautiful island. * SOCIAL EVENTS : There will be time for an outing on Wednesday afternoon. Several possibilities will be offered for which participants can register during the workshop.