PV Telescopii [SEP] constellation
PV Telescopii
PV Telescopii (also known as HD 168476) is a class B-type (blue) supergiant extreme helium star in the constellation Telescopium. It is also the prototype of variable stars called PV Telescopii variables.
Properties.
PV Telescopii shows radial velocity changes thought to be due to radial pulsations caused by a strange mode instability It appears as a star of magnitude 9.3. Despite a mass thought to be less than the sun, it is actually around 25,000 more luminous. The spectrum shows a strong hydrogen
BX Circini
BX Circini is a star in the constellation Circinus. Its variability was discovered in 1995, with its apparent magnitude ranging from 12.57 to 12.62 over a period of 2 hours 33 minutes. It is currently classified as a PV Telescopii variable star, but has been put forward as the prototype of a new class of pulsating star—the BX Circini variables—along with the only other known example, V652 Herculis. This class of star is rare, possibly because this is a brief stage of stellar evolution. Its