Detection of C2, CN and CH radicals in the spectrum of the transiting hot Jupiter HAT-P-1b

TL;DR

This study reports the detection of specific radicals in the spectrum of the transiting hot Jupiter HAT-P-1b and identifies radial pulsations, providing new insights into its atmospheric composition and dynamics.

Contribution

First detection of C2, CN, and CH radicals in the spectrum of HAT-P-1b, revealing its atmospheric composition and pulsation behavior.

Findings

Detection of C2, CN, and CH radicals in HAT-P-1b's spectrum

Identification of radial pulsation with a period of ~1900 seconds

Characterization of atmospheric features of a hot Jupiter

Abstract

In this paper we report spectroscopy of the transiting hot Jupiter HAT-P-1b. The HAT-P-1b is a giant ($R = 1.2 RJ$), 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 $C_{2}$, $CN$ 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.