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ASPA
Active Spectroscopy in Astronomy
Participation at the professional project
VEGA/CHARA
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ASPA
Active Spectroscopy in Astronomy
Astro-Spectroscopy for Beginners Advanced and
professional ambitioned Amateurs
contact Ernst Pollmann eMail ernst-pollmann_at_t-on
line.de http//www.astrospectroscopy.de
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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
  ?
• Spatial resolution less than 1mas
• For 4 telescopes simultanenously
• Simultanenously measurements of polarisation
• Simultanenously measurements of interferometry

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The Be-Star ? Cas
EW-Monitoring of Ha
Radial velocity
of Ha (R. Bücke Hamburg)

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Radial velocity of ? Cassiopeia
Bücke
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a) EW-Monitoring of HeI 6678
b) Monitoring EW-HeI 6678 versus EW-Ha
(published in Be Star Newsletter Vol. 39, 2009)
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LBV-star P Cygni
Monitoring of the equivalent width of the
Ha-emission line
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Period Analysis
Main Period 1278 d
Phase Plot of Period 1278 d
Phase Plot of Period 900 d
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Long-term photometric campaign AAVSO Special
Notice 131, November 7, 2008
ASPA-Results
Markova-Results
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EW-HeI 6678 Absorption
versus
EW-Ha-Emission
EW Ha Å
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Be-binary system d Scorpii
Ha-EW-Monitoring
FWHM-Monitoring of Ha
Indicator for disk rotation velocity
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V/R-Monitoring
of HeI 6678
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V/R Period analysis
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Triple-Peak in HeI6678
2006/06/02 F 0.785
2009 0.75 - 0.93
2006 0.72 - 1.08
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