![A collection of photometric fluxes and spectra of T Cha are shown. The blue vertical lines represent the variability in optical fluxes (Alcalá et al. 1993). IR photometric fluxes are from 2MASS, WISE, IRAC, IRAS, and Herschel. The millimetre band fluxes correspond to ALMA at 0.85 and 3 mm, SEST at 1.3 mm, and ATCA at 3.3 mm. The mid-IR spectra from Spitzer (grey) and JWST (orange) shows a varying continuum. Inset figure: The AIBs at 6.2, 8.1, and 11.3 µm, prominently appearing in the JWST spectrum, are marked. The two strong lines in the JWST spectrum correspond to the fine-structure [Ar ii] 6.98 µm and [Ne ii] 12.81 µm transitions. -- astro-ph.SR](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/10/Polycyclic-Aromatic-Hydrocarbon-PAH-Abundances.png?resize=1200%2C720&ssl=1)
The T Tauri star T Cha is known to have a protoplanetary disk with a dust gap separating the inner and outer disk regions. The mid-IR JWST spectrum of T […]
During the formation of rocky planets, the surface environments of growing protoplanets were dramatically different from those of present-day planets.
“Pebble snow” describes a planet formation mechanism where icy pebbles in the outer disk reach inner planet embryos as the water ice line evolves inward.
Rotational H2O spectra as observed with JWST/MIRI provide a good probe of the temperature and column density structure of the inner disk. H2O emission can also be influenced by dynamical […]
Ethylene glycol ((CH2OH)2, hereafter EG) and Glycolonitrile (HOCH2CN, hereafter GN) are considered molecular precursors of nucleic acids.
With Webb, researchers can study the properties and growth of dust grains within protoplanetary discs like this one, shedding light on the earliest stages of planet formation.
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have made the highest resolution image to date, revealing new insights into the unusual and mysterious architecture of the debris disk encircling […]
The compositions of the Solar System terrestrial bodies are fractionated from that of the Sun, where elemental depletions in the bulk rocky bodies correlate with element volatility, expressed in its […]
The occurrence rate of close-in super-Earths is higher around M-dwarfs compared to stars of higher masses.
The textbook picture of how planets form – serene, flat discs of cosmic dust – has just received a significant cosmic twist. New research, published in the Astrophysical Journal Letters, […]
