Ha spectrum of delta Scorpii - HD 143275 - SAO 184014 [B0.3iV] - 2019-06-25
Specs
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Delta Scorpii (Dschubba) is a spectroscopic binary B star. The period is 10.8092 years and the last periastron was at 2011 July 3.
The emission lines are caused by a disk around the B star.
Telescope: Celestron C11 11" SC, f/10, d=280mm
Spectrograph: Lhires III, 2400gr, slit 23u Resolution: 0.0693 Å / pixel, resolving power = 18600
Date: 25th June 20198, 22:50 - 23:19 UT, JD 2458660.46
Ha calibrated with internal telluric lines, normalized flux Exposure time: 8 x 180s Dark- corrected and stacked with SpectroCalc Full reduction process: SpectroCalc | Download spectrum 1D FIT: delSco_20190625_Ha_Manfred_Schwarz.fit Download LOG file of SpectroCalc: LOG.TXT |
Stellar data (Wikipedia.org):
Constellation: Scorpius, RA: 16h 00m 20s, Dec: -22° 37′ 18.1″
v = 2.3 mag, Mv = -3.8 mag
Distance: 444 ly, 136 pc
Mass: A ~ 13, B ~ 8.2 MΘ
Radius: A ~ 6.7 - 1900 RΘ
Luninosity: A ~ 38000 LΘ
Surface Temperature: A: ~27400 K
