Tag

Pahs

All articles tagged with #pahs

science2 months ago•3 min saved

Sub-Neptune Atmospheres as PAH-Rich Soot Factories Revealed by JWST

A new study using computer models suggests that the upper atmospheres of sub-Neptune exoplanets can host abundant PAHs, effectively acting as 'soot factories' with PAH production peaking near 600 K and depending on carbon‑to‑oxygen ratios and metallicity. GJ 1214 b emerges as the most promising candidate, and data from JWST and Hubble on several nearby planets could enable direct observations of these soot-rich atmospheres, marking an interdisciplinary, chemical‑engineering approach to exoplanet science.

via Universe Today|

#atmospheres #exoplanets #jwst

science1 year ago•3 min saved

Pre-Stellar Planetary Systems Harbor Life's Building Blocks

Scientists have discovered a large polycyclic aromatic hydrocarbon called cyanocoronene in deep space, indicating that complex organic molecules necessary for life can form even before stars are born, which could have significant implications for understanding the origins of life in the universe.

via Space|

#astrochemistry #cyanocoronene #organic-molecules

science1 year ago•2 min saved

Largest Aromatic Molecule Discovered in Deep Space

Scientists have discovered the largest aromatic molecule, cyanocoronene, in interstellar space within the Taurus molecular cloud, doubling the size of previous records and suggesting complex organic chemistry occurs even before star formation, with implications for understanding the origins of organic molecules in the universe.

via Chemistry World|

#cyanocoronene #interstellar #organic-molecules

science1 year ago•3 min saved

Recurrent Fluorescence: Key to Organic Molecules' Survival in Space

A study using JWST data reveals that closed-shell polycyclic aromatic hydrocarbons (PAHs) in space survive extreme conditions through a mechanism called recurrent fluorescence, which efficiently dissipates excess energy and explains their abundance in interstellar clouds.

via Phys.org|

#astrochemistry #interstellar-space #jwst

science-and-technology2 years ago•4 min saved

"Ryugu Samples Unveil Life's Building Blocks Formed in Universe's Icy Realms"

Recent research has revealed that polycyclic aromatic hydrocarbons (PAHs), organic molecules considered as prebiotic building blocks for life, can form in the cold regions of space with temperatures around 100 K, challenging the previous belief that they only formed in warmer environments near stars. This discovery, made through the study of asteroid Ryugu and the Murchison meteorite, suggests that these molecules predate the Solar System and opens up new pathways for understanding the chemical evolution of life on Earth and potentially other celestial bodies.

via Universe Today|

##astrobiology #meteorite

science3 years ago•4 min saved

Discovery of Farthest Organic Molecules in Space.

Astronomers have discovered the most distant organic molecules in the universe using the James Webb Space Telescope. The molecules, called polycyclic aromatic hydrocarbons (PAHs), are considered the basic building blocks for early forms of life. The discovery was made in a galaxy more than 12 billion light years from Earth, and the light used to make the observation likely began traveling when the universe was less than 1.5 billion years old. The researchers used gravitational lensing and the James Webb telescope's sensitive instruments to differentiate between infrared signals produced by larger dust particles and those produced by PAHs.

via VOA Learning English|

#astronomy #distant-galaxies #james-webb-space-telescope