In this paper we report spectroscopy of the transiting hot Jupiter HAT-P-1b. The HAT-P-1b is a giant (R = 1.2RJ), low-mean density transiting extrasolar planet in a visual binary system, composed of two sun-like stars. The host star HAT-P-1b known as ADS 16402 B is a G0V C dwarf (V = 9.87). We revealed optical emission of C2, CN and CH radicals in the spectrum of the hot Jupiter HAT-P-1b. We discovered radial pulsation of the hot Jupiter HAT-P-1b with a period of about 1900 sec.

Strong transient chaotic high-frequency activity has been detected in WR148 on a time scale of a few minutes. The main property is the variability of the fluctuation power, not the light-curve. The same is true for WR136 but with a more permanent pattern. The power of fluctuations is of order of thousandth relative to the steady intensity. The maximum fluctuation power lies in the frequency band of 25–50 Hz.