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SESTAS – SEminar on STellar AStrophysics

This is the group meeting for MPA members and affiliates interested in any aspect of the lives, deaths, and afterlives of stars. This explicitly includes the physics of stellar interiors, stellar explosions, binaries and multiple stars, and gravitational astrophysics.

The meetings take place on Wednesday at 11:00 - 12:15 in the old lecture room and will be in hybrid format also allowing for online participation.

All announcements will be made via the mailing list ( Tell Tiara if you want to subscribe.

Rough guidelines for SESTAS contributions/talks: (Note the new format)

  • This series is primarily a platform for Postdocs and PhD students in (or affiliated with) the stellar department, but we have room for visitors or guests.
  • The standard format is two short talks of 10-15 minutes each followed by an informal discussion.
  • Everyone, regardless of seniority and expertise, is encouraged to participate in the discussion. We explicitly welcome basic questions.
  • (We may deviate from the format on specific occasions, for example when we have senior external visitors)

What to present?

  • Talks can be on the presentation of a recent result or ongoing work. Presentations of a recent or classic paper in the field are also welcome. You do not need to be an expert on the topic presented, as long as you make an effort to explain. (If in doubt discuss with your advisor or mentor before).
  • Practice of a talk you plan to give at an upcoming conference can also be accommodated.

How to present? We will have many attendees that will not be real experts on your specific topic. Please make an effort to make your talk accessible for the non-experts in the room. For example.

  • Consider giving a brief overview of the context. How does the topic fit into bigger questions or unsolved problems? Is what you present a generally accepted view or is it challenging the status quo?
  • Bonus points for explanatory cartoons if you want to explain something. Also, bonus points if you slowly build up a more complicated graph if you want to show one.
  • Slides are probably the most convenient format for most. Other formats (a handout, the blackboard, present directly from the paper, or an interpretive dance, ..?) are welcome as long as you make an effort to make your contribution accessible for all attending.


Visitors 2021

Visitors 2019

Visitors 2018

Visitors 2017


December :

  • 2021/12/8
    • Paul Beck (Univ. Graz), Title : “Seismology of red giants in binaries”.
  • 2021/12/1
    • Camilla Clement Borre (Univ. Aarhus), Title : “Asteroseismology of Stars from Galaxy Mergers”

November :

  • 2021/11/24
    • Fabian Menezes (Lagrange Laboratory, Observatoire de la Côte d’Azur), Title : TBD
  • 2021/11/10
    • Daniel D'Orazio , Title : TBD
    • Johan Samsing , Title : TBD
  • 2021/11/3
    • No SESTAS seminar this day

October :

  • 2021/10/27
    • Earl Bellinger , Title : What can asteroseismology do for astrophysics?
    • Deepika Bollimpalli , Title : Role of disc instabilities in the outbursts in symbiotic binaries.
  • 2021/10/20
    • Stephan Geier , Title : A complete census of hot subluminous stars.
  • 2021/10/13
    • Taeho Ryu , Title : The importance of realistic stellar structure and relativity in modelling tidal disruption events.
    • Pavan Vynatheya , Title : Compact object mergers in quadruple star systems.
  • 2021/10/6
    • Falk Herwig , Title : Convection and internal gravity waves in high-resolution 3D hydrodynamic simulations of a 25Msun main-sequence star.

August and September:

  • Summer break

July :

  • 2021/07/28
    • Tamar Faran (the Hebrew University of Jerusalem), “Shock wave dynamics and breakout in stellar explosions”.
  • 2021/07/14
    • No meeting

June :

  • 2021/06/09
    • David R. Aguilera-Dena (Institute of Astrophysics FORTH, University of Crete) Ongoing research on “The progenitors of stripped-envelope supernovae near and far”.

May :

  • 2021/05/19
    • Abel Schootemeijer (Bonn University) Ongoing research on “A death of young and bright massive stars in the Small Magellanic Cloud”.
  • 2021/05/12
    • Benard Nsamba Ongoing research on “A novel approach to constrain the central hydrogen abundance of 16 Cygni A and B using asteroseismology”.
  • 2021/05/05
    • No meeting

April :

  • 2021/04/28
    • Rob Farmer (UvA) Ongoing research on “No carbon left behind: Comparison of carbon yields between single massive stars and those stripped in binaries”.
  • 2021/04/14
    • No meeting
  • 2021/04/07
    • No meeting

March :

  • 2021/03/17
    • Marcelo Miller-Bertolami (Institute of Astrophysics in La Plata) “Late evolution of low-mass stars: Models and theory ”

February :

  • 2021/02/24
    • Christian Sand (HITS) Ongoing research on “Common-envelope evolution with an asymptotic giant branch star”.
  • 2021/02/10
    • Special SESTAS: present your work - Part II Speakers: Holly Preece, Daniel Kresse, Liliya Imasheva, Robert Glas, Andrea Chiavassa, Eirini Batziou, Tiara Battich, Felix Ahlborn.
  • 2021/02/03
    • Special SESTAS: present your work - Part I Speakers: Naveen Yadav, Markus Wittkowski, Achim Weiss, Johannes Ringler, Rüdiger Pakmor, Thomas Janka, Adrian Hamers, Jakob Ehring.

January :

  • 2021/01/20
    • No meeting
  • 2021/01/13
    • Tiara Battich Ongoing research on “S-process nucleosynthesis in He-rich hot-subdwarf stars”.









start.txt · Last modified: 2021/10/26 10:13 by tiara