The Spectroscopic Orbit of BD Virginis.
Abstract
The spectrographic elements of the eclipsing variable BD Virginis are: P = 2.5485 days, y = +8.6 km/sec;K = +42.Okm/sec; e = 0.17, co = 123 °, T = JD2431111.06, asini = 1,400,000 km,f(m) = 0.020. The lines of oniy one component are visible. The type is A5, but the neutral lines of the metals are relatively strong, and the ionized lines of the metals are weak. The mass of the A-type component must be very small. For any reasonable value of the mass ratio it must be of the order of between 0.4 and 0.1 times the mass of the sun
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1944
- DOI:
- 10.1086/144655
- Bibcode:
- 1944ApJ...100..181S