B-type blue supergiant stars are at least 10,000 times brighter, two to five times hotter and 16 to 40 times more massive than the sun. Blue supergiants are so extreme that scientists have ...

A blue supergiant (BSG) is a hot, luminous star, often referred to as an OB supergiant. They have luminosity class I and spectral class B9 or earlier. Blue supergiants are found towards the top left ...

Italian astronomers report the detection of a new X-ray binary (XRB), which has received the designation 4XMM J181330.1-17511 ...