Intrinsic variable stars as a research area focuses on stellar objects whose luminosity variations arise from physical changes within the star itself, rather than from external geometric or eclipsing effects. This field investigates mechanisms such as radial and non-radial pulsations, stellar activity cycles, eruptive phenomena, and structural instabilities driven by processes like opacity changes, convection, and nuclear burning variations. Research integrates time-domain photometry, spectroscopy, and asteroseismology with stellar evolution and pulsation models to constrain internal structure, mass, radius, age, and rotation profiles. Intrinsic variability studies are central to calibrating distance indicators, testing stellar physics, and interpreting large-scale time-domain survey data.
Using the MeerKAT radio telescope, an international team of astronomers has discovered 15 new millisecond pulsars in 47 Tucanae—one of the closest and best studied globular clusters. The finding is reported in the latest ...
How does a star affect the makeup of its planets? And what does this mean for the habitability of distant worlds? Carnegie's Luke Bouma is exploring a new way to probe this critical question—using naturally occurring space ...
Astrobiology
Mar 30, 2026
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New UNLV-led research is helping to unravel clues to a cosmic mystery that has eluded scientists for decades. Cataclysmic variables (CVs) are binary star systems in which primary stars—incredibly dense and compact white dwarfs—accumulate ...
Astronomy
Mar 23, 2026
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Imagine trying to reconstruct the history of a city by studying only its oldest surviving buildings. You can't watch it being built, you can't interview the architects, all you have are the structures themselves, their materials, ...
Astronomy
Mar 2, 2026
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An international team of astronomers led by a researcher at Keele University has solved a long-standing cosmic mystery surrounding one of the most extreme stars ever observed. The star, known as WOH G64, is located in the ...
Astronomy
Jan 27, 2026
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Betelgeuse is the star that everybody can't wait to see blow up, preferably sooner rather than later. That's because it's a red supergiant on the verge of becoming a supernova and there hasn't been one explode this close ...
Astronomy
Jan 14, 2026
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Chinese astronomers have conducted an asteroseismology study of a newly discovered pulsating white dwarf designated WFST J053009.62+595557.0, or WFST J0530 for short. The new findings, presented January 2 on the arXiv pre-print ...
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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Astronomers from the Aryabhatta Research Institute of Observational Sciences (ARIES) in India and elsewhere have conducted a long-term photometric and spectroscopic study of a young stellar object known as V1180 Cassiopeiae. ...
Hypervelocity stars have, since the 1920s, been an important tool that allows astronomers to study the properties of the Milky Way galaxy, such as its gravitational potential and the distribution of matter. Now astronomers ...
