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Participation at the professional project VEGA/CHARA

ASPA. Active Spectroscopy in Astronomy. Participation at the professional project VEGA/CHARA. 1. ASPA. Active Spectroscopy in Astronomy. Astro-Spectroscopy for Beginners Advanced and professional ambitioned Amateurs. contact: Ernst Pollmann eMail: ernst-pollmann@t-online.de

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Participation at the professional project VEGA/CHARA

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  1. ASPA Active Spectroscopy in Astronomy Participation at the professional project VEGA/CHARA 1

  2. ASPA Active Spectroscopy in Astronomy Astro-Spectroscopy for Beginners Advanced and professional ambitioned Amateurs contact: Ernst Pollmann eMail: ernst-pollmann@t-online.de http://www.astrospectroscopy.de 2

  3. ASPA Participation at the professional projekt VEGA/CHARA • VEGA • a Visible spEctroGraph and polArimeter • VEGA is dedicated astrophysical topics / questions within the visible spectral region • Spectr. resolution until 30000 from 4000 to 9000 Ǻ • Spatial resolution less than 1mas • For 4 telescopes simultanenously • Simultanenously measurements of polarisation • Simultanenously measurements of interferometry 3

  4. The Be-Star γ Cas EW-Monitoring of Hα Radial velocity of Hα(R. Bücke Hamburg) 4

  5. Radial velocity of γ Cassiopeia Bücke 5

  6. a) EW-Monitoring of HeI 6678 b) Monitoring EW-HeI 6678 versus EW-Hα (published in Be Star Newsletter Vol. 39, 2009) 6

  7. LBV-star P Cygni Monitoring of the equivalent width of the Hα-emission line 7

  8. Period Analysis Main Period 1278 d Phase Plot of Period 1278 d Phase Plot of Period 900 d 8

  9. Long-term photometric campaign AAVSO Special Notice 131, November 7, 2008 ASPA-Results Markova-Results 9

  10. EW-HeI 6678 Absorption versus EW-Hα-Emission EW Hα [Å] 10

  11. Be-binary system δ Scorpii Hα-EW-Monitoring FWHM-Monitoring of HαIndicator for disk rotation velocity 11

  12. V/R-Monitoring of HeI 6678 12

  13. V/R Period analysis 13

  14. Triple-Peak in HeI6678 2006/06/02 Φ = 0.785 2009: 0.75 - 0.93 2006: 0.72 - 1.08 13

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