The luminosity of his poetry is unequaled. something luminous. Astronomy. the brightness of a star in comparison with that of the sun: the luminosity of Sirius expressed as 23 indicates an intrinsic brightness 23 times as great as that of the sun. Also called luminos ity fac tor. Optics. ...
Earth's Sun has less luminosity than Sirius or Rigel. Which star would then have the greatest temperature? Earth's Sun has a surface temperature of about 6,000 Kelvin or over 10,000 degrees Fahrenheit. Sirius has a surface temperature of 9,940 Kelvin or about 17,000 degrees Fahrenheit. ...
The luminosity that matters when it comes to understanding what's powering an object, from stars to quasars, isthe intrinsic luminosity. That's a measure of the amount of energy it actually emits in all directions each second regardless of where it lies in the universe. It's a way of un...
The period-luminosity relation of Mira variables in NGC 6388 and NGC 6441Noriyuki MatsunagaIrsfSirius team
For a star at D = 10 parsecs, 5log10 = 5, so M = m. ) pc 10 / ( log 5 10 D M m If we can figure out the absolute magnitude of a star, then we can determine its distance using the apparent magnitude. The “distance modulus is defined as Is Sirius brighter or fainter than...
We have conducted deep near-infrared surveys of the Sh-2 255, W3 Main and NGC 7538 massive star forming regions using simultaneous observations of the JHKs-band with the near-infrared camera SIRIUS on the UH 88-inch telescope. The near-infrared surveys cover a total area of ∼ 72 square...