First, astronomers find iron on the new “ultra-hot” exoplanet, twice the size of Jupiter

In a recent development, a group of international astronomers discovered a new ultra-hot exoplanet twice the size of Jupiter. The newly discovered planet is said to have an interesting characteristic atmosphere containing neutral iron. In an article published on August 25, detailed information about the recent discovery was provided on the hot planet.

Confirming the same, the researchers wrote: “We show the discovery of TOI1518b, a super hot Jupiter orbiting a bright star (V = 8.95). This was confirmed with the high resolution optical transmission spectra. FAST, which passed through planets. ” They further stated that the planet orbits the rapidly rotating host star FO F0 in 1.9 days and is under intense radiation. It should be noted that the TESS data shows a clear secondary solar eclipse with a depth of 364 ± 28 ppm, and the phase curve signal is significant, from which the relative diurnal planetary flux difference was obtained.

New ultra-hot extrasolar planet

As NASA’s Transiting Exoplanet Survey Satellite (TESS) observed a bright star called TOI-1518, a transit signal was identified in the object’s light curve. Later, it was confirmed the discovery of a new very high temperature exoplanet. In addition, it has also been found that the size of the planet is twice the size of Jupiter and has a misaligned orbit. Its characteristics are very similar to other planets in the solar system but have fewer orbital periods.

This discovery was later reported by a group of international astronomers from Yale University. They confirmed the discovery of the new exoplanet (TOI-1518b) by high-resolution observations taken with the EXPRES spectrograph.

(Image credit: Cabot et al., 2021)

Based on the results, astronomers said it had an equilibrium temperature of 2,492 Kelvin (K) and a measured daytime temperature of 3,237 Kelvin (K), further suggesting thermal inversion. However, other details have yet to be confirmed after appropriate observations.

It is also very interesting that astronomers have also detected iron in the atmosphere of the exoplanet. After performing an atmospheric cross-correlation analysis, the team found neutral iron in the atmosphere of TOI1518b.

Speaking on the same topic, the researchers said: “We used high-resolution transmission spectroscopy to find neutral and ionized Fe in the atmosphere of the companion star. … neutral iron (5.2), Kp = 157 km / s and Vsys = -16 km / s, add another object from a small sample of a highly radiant gas giant planet with transmission iron detection. “

(Image credits: PhysOrg / Pixabay)