Using ALMA's Atacama Compact Array, a team led by Cristobal Bordiu (INAF Catania Astrophysical Observatory) has detected a rich collection of sulfur-bearing molecules around the rare massive star HD 87643 — the first detection of sulfur chemistry around any B[e] supergiant, expanding its known molecules from one to ten. An unexplained sulfur isotope ratio points to mass-independent fractionation, a process previously documented only in ancient Earth rocks and meteorites. Published in The Astrophysical Journal Letters.
Astronomers have uncovered a chemically rich shroud of sulfur-bearing molecules around the rare massive star HD 87643, including the first ever detection of sulfur monoxide and sulfur dioxide around a B[e] supergiant. The find opens an almost entirely unexplored chapter of chemistry around hot, dying stars — and, unexpectedly, points to a molecular process previously...
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 has detected sulfur-bearing molecules around the rare massive star HD 87643 — the first sulfur chemistry ever found around a B[e] supergiant, expanding its known molecular inventory from one molecule to ten. An anomalous sulfur isotope ratio points to mass-independent fractionation, a process previously seen only in ancient Earth rocks and meteorites. Published in The Astrophysical Journal Letters.){kind=link}