What is the temperature and luminosity of the star Spica?
Spica has a spectral type of B1V, a surface temperature of 22,400° Kelvin and a luminosity 12,100 times the Sun. It has a mass of 10.3 solar masses and a diameter 7.4 times the Sun.
Is Spica hotter than the sun?
Hot, hot, hot Spica is considered one of the hottest 1st-magnitude stars. The hottest of the pair is 22,400 Kelvin (about 40,000 F or 22,000 C). That’s blistering in contrast to the sun’s 5,800 Kelvin (about 10,000 F or 5,500 C). This star might someday explode as a supernova.
What is the luminosity of the star Spica?
Spica
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Luminosity | 2,254+1,166 −768 L ☉ |
| Surface gravity (log g) | 4.15±0.15 cgs |
| Temperature | 20,900±800 K |
| Rotational velocity (v sin i) | 58.8±1.5 km/s |
What is the spectral class of the star Spica?
spectral class B1
Spica belongs to spectral class B1 and has a luminosity class of III corresponding to a giant star.
What is the surface temperature of Polaris?
Polaris
| Observation data Epoch J2000 Equinox | |
|---|---|
| Radius | 37.5 R ☉ |
| Luminosity (bolometric) | 1,260 L ☉ |
| Surface gravity (log g) | 2.2 cgs |
| Temperature | 6015 K |
Which star is the lowest temperature?
Washington: Imagine a star as frosty as the earth’s North Pole! It is true as a Penn State University astronomer using NASA’s Wide-field Infrared Survey Explorer (WISE) and Spitzer Space Telescopes has discovered a “brown dwarf” star that appears to be the coldest of its kind. The star has been named WISE J085510.
What is the hottest temperature in the universe?
The highest temperature that scientists have created — and thus measured — is 2 trillion kelvins. That was in the “quark-gluon plasma” created in an experiment at the Large Hadron Collider in Europe.
Which is hotter Rigel or Spica?
If we want to see an even hotter star than Rigel, we need only turn around and look to the southeast. The brightest star in this portion of the sky is Spica, the brightest star in Virgo.
What is hottest thing in the universe?
The hottest thing in the Universe: Supernova The temperatures at the core during the explosion soar up to 100 billion degrees Celsius, 6000 times the temperature of the Sun’s core.
What is the temperature and luminosity of Polaris?
Polaris has a spectral type of F7Ib-II, a surface temperature of 7200° Kelvin and a luminosity 2500 times the Sun. It has a mass of 6.5 solar masses and a diameter 46 times the Sun.
What is the color and temperature of Polaris?
It is a main sequence star of the spectral type F3V with 1.39 solar masses and 1.38 solar radii. It shines with 3.9 solar luminosities and has an estimated surface temperature of 6,900 K. Polaris B was discovered by the German-born British astronomer William Herschel in August 1779 using a reflector telescope.
What happens when Uy scuti dies?
When it does die, it’s expected to explode with the force of more than 100 supernovas. A supernova is the explosion of a star, and it’s the largest explosion that takes place in space. So the force of 100 stars exploding would obliterate everything nearby.
What is the peak wavelength of the sun’s thermal radiation?
The Sun has a peak wavelength of thermal radiation l peak = 5300 Angstroms. What is the Sun’s average temperature?
Which star cluster has the coolest temperature?
These red stars have the coolest temperatures among the stars in the cluster. taken by students at the University of California, Berkeley. They adopted the double star system Albireo as the “Cal Star,” because the two stars (one blue and one yellow) match the school’s colors.
What units are used to measure the temperature of a star?
Where the temperature will be in units of Kelvin degrees, and the wavelength will be in units of nanometers. Careful measurements of a star’s light spectrum gives astronomers clues about its temperature. For example, incandescent bodies that have a red glow are ‘cool’ while bodies with a yellow or blue color are ‘hot’.