Be stars are non-supergiant B-type stars that exhibit Balmer emission lines arising from a gaseous, equatorial circumstellar disc. These stars rotate at velocities approaching their critical break-up ...

A team led by a University of Oklahoma astrophysicist discovered a rare and surprising new circumstellar disk: the oldest of its kind. They made this discovery working together with a remarkable team ...

Be stars, a sub-class of B-type stars, are distinguished by their rapid rotation and the presence of prominent emission lines in their spectra, associated with circumstellar gaseous disks. These disks ...

Astronomers have used NASA’s Hubble Space Telescope to take the most detailed picture to date of a large, edge-on, gas-and-dust disk encircling the 20-million-year-old star Beta Pictoris. Beta ...

An international team of astronomers led by Durham University and including astronomers at the UK Astronomy Technology Centre has reported the first detection of a rotating disc structure around a ...

When you observe a distant star, you expect its brightness to be something that's fairly uniform. Sure, some stars vary in brightness periodically -- even our Sun does -- but those intrinsic ...

Astronomers have developed a novel technique that utilises the physical properties of circumstellar disks to calculate the ...

Torn disc: artist’s impression of the circumstellar disc surrounding GW Orionis. The innermost ring can be seen at an angle to the rest of the disc. (Courtesy: ESO/L Calçada, Exeter/Kraus et al.) The ...

A group of citizen scientists and professional astronomers joined forces to discover an unusual hunting ground for exoplanets. They found a star surrounded by the oldest known circumstellar disk -- a ...

In the infinite cosmos, planets are birthed from the swirling disc of gas and dust that form around young stars. In our own Solar System, this disc was relatively stable and flat, resulting in Earth ...

BERKELEY, CA -- By measuring polarized light from an unusual exploding star, an international team of astrophysicists and astronomers has worked out the first detailed picture of a Type Ia supernova ...