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Variability of Galactic blue supergiants observed with TESS

2025-07-14 admin

Blue supergiants – stars many times larger and more massive than the Sun – undergo dramatic changes during their lifetime. A new study using the

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hotstars news

HD 144812 – A transition-phase massive star in a binary system

2025-04-202025-04-30 admin

Modelling the late stages of the evolution of very massive stars is one of the biggest challenges in astrophysics today. In addition, the limited availability

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hotstars news Perek-2m

Disentangling the stellar atmosphere and the focused wind in different accretion states of Cygnus X-1

2025-03-202025-03-20 admin

Cygnus X-1 is one of the most famous X-ray binaries in our Galaxy. This system consists of a massive blue supergiant and an invisible companion

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hotstars news

Horizontal flows in the atmospheres of chemically peculiar stars

2025-02-05 admin

Abstract Context. Classical chemically peculiar stars exhibit atmospheres that are often structured by the effects of atomic diffusion. As a result of these elemental diffusion

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department hotstars news

POEMS: Physics of extreme massive stars

2024-10-232024-10-23 admin

POEMS (Physics of extreme massive stars) project investigates a variety of physical aspects that boost understanding of specific extreme phases in the evolution of massive

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News

  • Variability of Galactic blue supergiants observed with TESS
  • PLATO – search for the second Earth — a milestone in the preparation of the ESA mission with Czech participation
  • Minister of Transportation Martin Kupka visited Ondřejov Observatory
  • From the internship at the Ondřejov Observatory to the victory in the national competition of SOČ
  • 50 Dra – Am-type twins with additional variability in a non-eclipsing system
  • Lecture for high school students from Benešov
  • International Conference on High Energy Astrophysics IBWS 2025
  • Days of Open Doors at ASU Ondřejov 2025
  • Stellar obliquities of eight close-in gas giant exoplanets
  • HD 144812 – A transition-phase massive star in a binary system

Contact

Head: Brankica Kubátová
Deputy: Martin Jelínek
Secretary: Eva Žďárská
Phone: +420 323 620 226
E-mail: eva.zdarska @ asu.cas.cz

Address:
Fričova 298, 251 65 Ondřejov
Czech Republic

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  •    Astronomical Institute of CAS
  •    Czech Academy of Sciences

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