Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...195..148m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 195, no. 1-2, April 1988, p. 148-158. Sponsorship: Ministero della Pubblica Is
Astronomy and Astrophysics
Astrophysics
7
B Stars, Pulsars, Stellar Orbits, Stellar Spectra, X Ray Binaries, Radial Velocity, Taurus Constellation, X Ray Sources
Scientific paper
Radial velocities of the Be star HDE 245770 determined from 23 spectra obtained at the Observatory of Asiago suggest an orbital period of 55.78±0.64 days. By enlarging the sample with the 27 Victoria radial velocities by Hutchings et al. (1978), an improved period of 55.73±0.31 days and new orbital elements are obtained. According to this orbital solution, recurrent X-ray flares of A 0535+25 should start at phase -0.06±0.03 from periastron and reach the maximum at phase +0.02±0.02. By excluding two giant outbursts, the corresponding figures are 0.00±0.03 and +0.06±0.03 respectively. A much less likely orbital solution with a 111 day period is obtained from either the Asiago or the Asiago and Victoria radial velocity determinations. The equivalent width of the Hβ emission line is also examined.
Ciatti F.
Mammano Augusto
Margoni Rino
Vittone A. A.
No associations
LandOfFree
The binary orbit of the Be star HDE 245770 = V 725 Tauri and the recurrent X-ray activity of A 0535+26 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The binary orbit of the Be star HDE 245770 = V 725 Tauri and the recurrent X-ray activity of A 0535+26, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The binary orbit of the Be star HDE 245770 = V 725 Tauri and the recurrent X-ray activity of A 0535+26 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-847444