Physics
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983s%26w....22..290w&link_type=abstract
Sterne und Weltraum (ISSN 0039-1263), vol. 22, June 1983, p. 290-294. In German.
Physics
Hertzsprung-Russell Diagram, Magellanic Clouds, Stellar Evolution, Stellar Luminosity, Supergiant Stars, Hot Stars, Stellar Atmospheres, Stellar Magnitude, Stellar Mass Ejection, Stellar Temperature
Scientific paper
In connection with the MK (Morgan-Keenan) classification, a second classification parameter, the luminosity, is added to the temperature as the first parameter. The designation Ia-0 has been originally introduced for the absolutely brightest stars in extragalactic systems. The brightest star in the visual spectral range (HD 33 579) of the Large Magellanic Cloud, for instance has been classified as a A3Ia-0 star. Its absolute visual magnitude is Mv=-9.5. The luminosity of this star is approximately 500,000 times as large as that of the sun. The reason for the high luminosity of the supergiants is related to the vast extension of the atmospheres of these stars. The considered star has, for example, a diameter which is 360 times as large as the solar diameter. However, the gravitational attraction concerning the supergiant atmosphere is weak, and the brightest supergiants lose a considerable amount of matter. It is found that hot supergiants exist with a luminosity which is several million times as large as the solar luminosity. Attention is given to the mass loss of hot stars, and the evolution of stars with a large mass.
No associations
LandOfFree
The brightest supergiants does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The brightest supergiants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The brightest supergiants will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1509261