shell star การใช้

• It is a shell star and a spectroscopic binary.
• It is a shell star, surrounded by material expelled by its rapid rotation.
• It is a shell star with a circumstellar disc of gas surrounding the equator and extending out to about 11 times the radius of the star.
• Classed as a Gamma Cassiopeiae variable or shell star, it is of spectral type B2II-IIIe and lies around 1430 light years distant from Earth.
• Other studies have found a spectrum similar to an A supergiant, but this is thought to be an artefact of a B-type shell star.
• This is classified as a shell star that has a circumstellar disk of gas around the star's equator, which may be causing it to vary in magnitude.
• The spectrum is variable in the long term, and the early type shell stars may switch from and to exhibiting a Be type spectrum or an ordinary B spectrum.
• It is a ? Cas variable, a shell star with a circumstellar disc of gas and irregular changes in brightness, ranging from 4.85 to 4.55 magnitude.
• In the latter 8th century, king K'ak'Ukalaw Chan Chaak of Naranjo took a Yaxha princess as his wife; Lady Shell Star provided the king with his heir.
• It is believed that the shell stars belong to somewhere in the range of main sequence up to giant star size, although the exact luminosity class is uncertain due to rotational line broadening.
• Although its variations are slight, Gomeisa is classified as a shell star ( Gamma Cassiopeiae variable ), with a maximum magnitude of 2.84 and a minimum magnitude of 2.92.
• It is a ? Cas variable, a type of shell star with a circumstellar disc of gas surrounding the star at the equator, ranging from 5.05 to 4.85 magnitude.
• Although the Be type spectrum is most strongly produced in class B stars, it is also detected in O and A shell stars, and these are sometimes included under the " Be star " banner.