Circumstellar envelopes as a research area focus on the physical, chemical, and dynamical characterization of extended gaseous and dusty regions surrounding stars, particularly evolved objects such as asymptotic giant branch stars, red supergiants, and some massive young stellar objects. Work in this field investigates mass-loss processes, dust formation and growth, molecular chemistry, radiative transfer, and the interaction of stellar winds with the ambient medium. It integrates multiwavelength observations (from radio to infrared and optical) with hydrodynamic and magnetohydrodynamic modeling to constrain envelope morphology, kinematics, clumpiness, and temporal variability, thereby informing stellar evolution, feedback, and the enrichment of the interstellar medium.
An international team led by Dr. Indrani Das of Academia Sinica Institute of Astronomy and Astrophysics (ASIAA) has shown, for the first time, how infalling gas from star-forming cores gradually transitions into planet-forming ...
Astronomy
Apr 15, 2026
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When most people think of a supernova, they're thinking of a Type II core-collapse supernova. These are massive stars that have reached the end of their time on the main sequence. They've used up their supply of hydrogen ...
Astronomy
Mar 5, 2026
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Just in time for Valentine's Day, space offers a heart-shaped greeting. The star Mira A, about 300 light-years from Earth, has released material into an expanding cloud of gas and dust resembling a heart. Both the amount ...
Astronomy
Feb 11, 2026
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Using new observations from NASA's Hubble Space Telescope and ground-based observatories, astronomers have tracked the influence of a recently discovered companion star, Siwarha, on the gas around Betelgeuse. The research, ...
Astronomy
Jan 5, 2026
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