The Be / X-ray binary LS I + 61 ◦ 235 / RX J 0146 . 9 + 6121 : physical parameters and V / R variability

Abstract

We present the results of spectroscopic and photometric observations of LS I +61◦ 235. Blue 4100-4900 Å spectra of the system are used to assign a spectral type of B1V to the optical companion while detailed uvbyβ photometric data permit us to derive its astrophysical parameters. The monitoring of this high mass X-ray binary since its discovery in 1991 has… (More)

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