Molecular hydrogen H² (4-0) in the spectra of Jupiter and Saturn
Heading:
| Atai, AA, Yuzbashov, ER, 1Mikailov, KM, Farziev, ZS 1Nasir al-Din al-Tusi Shamakhi Astrophysical Observatory, Pirqulu, Azerbaijan |
| Kinemat. fiz. nebesnyh tel (Online) 2021, 37(5):18-36 |
| https://doi.org/10.15407/kfnt2021.05.018 |
| Start Page: Dynamics and Physics of Solar System Bodies |
| Language: Ukrainian |
Abstract: According to the spectrophotometric measurements of Jupiter and Saturn, obtained in 2014—2017, on the echelle spectrometer equipped with a CCD receiver at the Cassegrain focus of the 2-m telescope of the ShAO, weak quadrupole lines of molecular hydrogen of the H2(4-0) band in the visible region of the spectrum with spectral resolutions R = 14000 and R = 56000. Some parameters were determined from the lines of the H2 (4-0) S(0) and S(1) band, i.e. the values of the pressure at the levels of their formation, the rotational temperature, the values of the content of molecular hydrogen in the above-cloud atmosphere, the amount of absorbing gas per average length free path of photons between two scattering events in the cloud layer, specific gas content per unit free path in different parts of the disk of Jupiter and Saturn. It was necessary to monitor the change in the ratio S4(2)/S4(0) along the disk of Jupiter and Saturn in the spatial and temporal intervals. According to our measurements in 2016 for Jupiter, the ratio W(0)/W(2) = 3.5±0.6, and for Saturn W(0)/W(2) > 2.5±0.4; in general, the GRS has an average temperature of about 124 ± 6 K. |
| Keywords: atmosphere, echelle spectrograph, Jupiter, molecular hydrogen, quadrupole line, Saturn, spectral lines |
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