Ha spectrum of Beta Aurigae - Menkalinan - HD 40183 - SAO 40750 [A1IV-Vp] - 2020-04-02
Specs
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Menkalinan is a binary system. Both companions have a similar mass and are A2 types. They have a short period of 3.96 days.
Telescope: Celestron C11, f/10, d=280mm
Spectrograph: Lhires III, 2400gr, slit 23u Resolution: 0.0693 Å / pixel, resolving power = 18600
Date: April 2, 2020, 22:45-23:28 UT, JD 2458942.46
Spectra with 2400 lines/mm, processed with SpectroCalc2 Calibrated on ArNe lines, normalized flux 5 images, each 480 seconds (40 minutes) Dark/Flat corrected and processed with SpectroCalc2 | Download spectrum 1D FIT: BetAur_20200402_Ha_Manfred_Schwarz.fit Download SpectroCalc2-project file: BetAur_20200402_Ha_Manfred_Schwarz.sc2 |
Stellar data (Wikipedia.org):
Constellation: Auriga, RA: 05h 59m 32s, Dec: +44° 56′ 51″
v = 1.9 mag, Mv = -0.54 / -0.7 mag
Rv = -15.75 km/s
Distance: 81 +- 1 ly, 25 pc
Mass: 2.39 +-0.01 MΘ / 2.33 +-0.01 MΘ
Radius: 2.77 +-0.03 RΘ / 2.63 +-0.03 RΘ
Luninosity: 52 +-6 LΘ / 45 +-5 LΘ
Rotational velocity: ~33 km/s / 34 km/s
Age: 570 x 10^6 years
