Corot Week 6 1 Targets selection Be stars Paris-Meudon Observatory: A.-M. Hubert, M. Floquet, C. Neiner Univ. of Valencia: J. Fabregat, J. Gutierrez- Soto, J. Suso Univ. of Sao Paulo: E. Janot-Pacheco, L. Andrade, S. Daflon Royal Observatory of Belgium: Y. Frémat ESA, Estec, RSSD: C. Neiner
22
Embed
Corot Week 61 Targets selection Be stars Paris-Meudon Observatory: A.-M. Hubert, M. Floquet, C. Neiner Univ. of Valencia: J. Fabregat, J. Gutierrez-Soto,
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Corot Week 6 1
Targets selection
Be stars
Paris-Meudon Observatory: A.-M. Hubert, M. Floquet, C. Neiner
Univ. of Valencia: J. Fabregat, J. Gutierrez-Soto, J. Suso
Univ. of Sao Paulo: E. Janot-Pacheco, L. Andrade, S. Daflon
Royal Observatory of Belgium: Y. Frémat
ESA, Estec, RSSD: C. Neiner
Corot Week 6 2
Early and late Be stars: 2 science goals
Early Be stars (B0-B3): pulsations and multiperiodicity already detected from the ground
Is the beating effect of close pulsation periods the cause of the Be phenomenon i.e. the presence of a disk around Be stars?
Effects of fast rotation and magnetic field on the pulsations
Late Be stars (B4-B9): pulsations predicted by theory but the amplitude is too small to be detected from the ground
Stromgren photometry at the 0.9m in Granada (6 weeks) for variability: detection of variability, periodicity and even multiperiodicity for HD 168797 and HD 179405
uvby photometry + narrow filters (H, H) at the 1.5m in Calar Alto (3 weeks) to search for faint Be stars in the exoplanet fields
See Gutierrez-Soto et al. 2003 and posters!
Corot Week 6 5
Spectroscopy: GAUDI
for 6 < V < 8 spectra in GAUDI
17 new Be stars discovered in GAUDI (Neiner, Hubert & Catala, 2004)