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223 (0,156s) •

Project

Tracing the mass-loss history in evolved massive stars (7AMB14AR017)

winds and the formation of circumstellar disks, shells, and nebulae around massive the structure and kinematics of the circumstellar material of these objects. The aim material. This circumstellar material is so c...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2014 - 2015
    • •
  • 320 tis. Kč
    • •
  • 320 tis. Kč
    • •
  • MŠMT
Project

Circumstellar environment of evolved hot stars (GAP209/11/1198)

from a circumstellar source. Interestingly, stars from all three groups show besides their infrared excess due to hot circumstellar dust, strong line emission disk. We thus aim at investigating the circumstellar conditions...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2011 - 2013
    • •
  • 3 656 tis. Kč
    • •
  • 3 656 tis. Kč
    • •
  • GA ČR
Project

Structure and evolution of the circumstellar emission disks of Be stars (GA202/97/0326)

The monitoring of the emission profiles of Balmer H-alfa line and some Fe II and Si II lines formed in the circumstellar emission disks of the Be-type stars has field. I order to derive the structure and evolution of the circumstellar

BN - Astronomie a nebeská mechanika, astrofyzika

  • 1997 - 1999
    • •
  • 385 tis. Kč
    • •
  • 339 tis. Kč
    • •
  • GA ČR
Project

Circumstellar envelopes of hot stars (GA205/04/1267)

Circumstellar envelopes of hot stars influence the stellar spectrum and in particular also the stellar evolution. The solution of proposed project will contribute to the understanding of both mentioned relationships. This is why we plan to c...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2004 - 2006
    • •
  • 2 722 tis. Kč
    • •
  • 2 722 tis. Kč
    • •
  • GA ČR
Project

Properties of the circumstellar matter around B[e] stars (GA17-00871S)

The goal of the project is to contribute to the understanding of the B[e] phenomenon (the presence of extended gaseous and dust envelopes around some B type stars exhibiting forbidden emission lines). We intend to obtain and analyse systematic series...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2017 - 2021
    • •
  • 2 139 tis. Kč
    • •
  • 1 837 tis. Kč
    • •
  • GA ČR
Project

Molecules in the environments of evolved massive stars (GA17-02337S)

Recent analysis of the circumstellar material of B[e] supergiants (B[e]SGs) revealed the surprising result that these stars are surrounded by multiple Keplerian rings of gas, molecules, and dust. So far, only few ring tracers exist, and a mo...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2017 - 2019
    • •
  • 5 499 tis. Kč
    • •
  • 5 076 tis. Kč
    • •
  • GA ČR
Project

Structure and evolution of stellar ejecta (GA20-00150S)

Optical and infrared imaging revealed that massive stars are often surrounded by large-scale nebula, witnesses of mass ejection phases. The massive B[e] stars display intense emission, characteristic for dense circumstellar nebulae. However ...

Astronomy (including astrophysics,space science)

  • 2020 - 2023
    • •
  • 6 106 tis. Kč
    • •
  • 6 106 tis. Kč
    • •
  • GA ČR
Project

Mass-loss rate predictions for hot stars (GA205/08/0003)

Massive hot stars constitute an important part of our Galaxy and many other galaxies. Consequently, a detailed knowledge of their evolution and of their influence on the circumstellar environment is necessary for our understanding of the str...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2008 - 2012
    • •
  • 4 876 tis. Kč
    • •
  • 4 876 tis. Kč
    • •
  • GA ČR
Project

Identification of HI shells in the Milky Way and their models (IAB3003106)

The list of HI shells in the Milky Way was published 20 years ago and from sources, which create HI shells. In the proposed project HI shells will be identified in the new HI survey of the Milky Way (Leiden-Dwingello atlas)...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2001 - 2003
    • •
  • 1 652 tis. Kč
    • •
  • 416 tis. Kč
    • •
  • AV ČR
Project

Evolving Ice Shells - processes shaping planetary ice shells inferred from numerical modelling (GA22-20388S)

shells - a few to tens of kilometers thick barriers that make any direct contact be achieved by numerical modelling of the ice shell dynamics and by identifying its of planetary ice shell evolution, i.e. processes on vario...

Astronomy (including astrophysics,space science)

  • 2022 - 2024
    • •
  • 6 649 tis. Kč
    • •
  • 6 487 tis. Kč
    • •
  • GA ČR
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