![ChM diagram of M dwarfs in 47 Tucanae from JWS T-HS T photometry (grey dots). Spectroscopic targets observed with NIRSpec@JWS T are represented with filled coloured circles. Targets with no available mF322W2 from NIRCam@JWS T are plotted with ∆C F606W,F814W,F322W2=0.00 as empty circles. Different colors have been used for stars associated with different stellar populations on the ChM, specifically: first population (1P) stars are colored in red, second population ones have been colored in orange (2Pa), cyan (2Pb) and blue (2Pe). The [O/Fe] abundance vs. the ∆F606W,F814W and ∆C F606W,F814W,F322W2 values is shown in the upper and right panels, respectively. For each population, we plot the average values and the associated error. -- astro-ph.GA](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/06/A-JWST-project-on-47-Tucanae.png?resize=1200%2C720&ssl=1)
We present the first spectroscopic estimates of the chemical abundance of M dwarf stars in a globular cluster (GC), namely 47 Tucanae. By exploiting NIRSpec on board the James Webb […]
Interstellar
Posted inInterstellar, Missions & Hardware, Press Release, Space Weather & Heliophysics
The Voyager 1 Interstellar Probe Is Returning Science Data From All Four Instruments
NASA’s Voyager 1 spacecraft is conducting normal science operations for the first time following a technical issue that arose in November 2023.
Posted inArctic / Antarctic / Alpine, Astrochemistry, Astrogeology, Atmospheres, Climate, Weather, Fossils & Paleontology, Habitable Zones, Icy Worlds, Interstellar, Press Release
Our Solar System May Have Passed Through Dense Interstellar Clouds 2 Million Years Ago, Altering Earth’s Climate
Around two million years ago, Earth was a very different place, with our early human ancestors living alongside saber-toothed tigers, mastodons, and enormous rodents. And, depending on where they were, […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Imaging & Spectroscopy, Status Report
Unveiling Gas Phase H2NCO Radical: Laboratory Rotational Spectroscopy and Interstellar Search Toward IRAS 16293-2422
Context. The carbamoyl radical (H2NCO) is believed to play a central role in the ice-grain chemistry of crucial interstellar complex organic molecules as formamide and acetamide. Yet, little is known […]
Posted inAstrochemistry, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Status Report, Tricorders & Sensors
Design and Implementation of a New Apparatus for Astrochemistry: Kinetic Measurements of the CH + OCS Reaction and Frequency Comb Spectroscopy in a Cold Uniform Supersonic Flow
We present the development of a new astrochemical research tool HILTRAC, the Highly Instrumented Low Temperature ReAction Chamber. The instrument is based on a pulsed form of the CRESU (Cinétique […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Status Report
A Fast Neural Emulator For Interstellar Chemistry
Astrochemical models are important tools to interpret observations of molecular and atomic species in different environments. However, these models are time-consuming, precluding a thorough exploration of the parameter space, leading […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Press Release
Webb Finds Plethora of Carbon Molecules Around Young Star
An international team of astronomers has used NASA’s James Webb Space Telescope to study the disk of gas and dust around a young, very low-mass star. The results reveal the […]
Posted inAstrochemistry, Biochemistry & Organic Chemistry, Status Report
Carbon Isotope Fractionation of Complex Organic Molecules in Star-Forming Cores
Recent high-resolution and sensitivity ALMA observations have unveiled the carbon isotope ratios (12C/13C) of Complex Organic Molecules (COMs) in a low-mass protostellar source. To understand the 12C/13C ratios of COMs, […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Status Report
Observation Of Complex Organic Molecules Containing Peptide-like Bonds Towards Hot Core G358.93−0.03 MM1
In the star formation regions, the complex organic molecules that contain peptide bonds (−NH−C(=O)−) play a major role in the metabolic process because −NH−C(=O)− is connected to amino acids (R-CHNH2−COOH).
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Status Report
Volume Density Maps Of The 862nm DIB Carrier And Interstellar Dust: A Hint For The Role Of Carbon-rich Ejecta From AGB stars?
The carbonaceous macromolecules imprinting in astronomical spectra the numerous absorptions called Diffuse Interstellar Bands (DIBs) are omnipresent in the Galaxy and beyond and represent a considerable reservoir of organic matter.