Tag: Carbonyls
-
Extreme NiI/FeI Abundance in 3I/ATLAS Comet’s Coma
Overview Emission lines from neutral nickel (NiI) and neutral iron (FeI) are commonly seen in the comae of solar system comets, even when the Sun’s heat is far from sublimating refractory materials. The interstellar journey of comets preserves chemical fingerprints from their parent systems, and recent work on the interstellar visitor 3I/ATLAS has highlighted an…
-
Extreme NiI/FeI Abundance in the Coma of Interstellar Comet 3I/ATLAS
Introduction: Extreme metal signatures in an interstellar visitor Spectroscopic observations of the interstellar comet 3I/ATLAS have unveiled an extraordinary metal signature in its coma. Using the European Southern Observatory’s Very Large Telescope (VLT) with the UVES spectrograph, researchers tracked six epochs as 3I traversed from 3.14 to 2.14 astronomical units from the Sun. In these…