Vega is a classic class A (A0) white main sequence dwarf star, like the Sun quietly running off the nuclear fusion of hydrogen deep in its core, with a sort of average effective surface temperature of about 9500 degrees Kelvin.Jun 26, 2009
How hot is the core of Vega?
What is the core temperature of Vega?
Vega
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Surface gravity (log g) | 4.1 ± 0.1 cgs |
| Temperature | 9,602 ± 180 (8,152–10,060 K) K |
| Metallicity [Fe/H] | −0.5 dex |
| Rotational velocity (v sin i) | 20.48 ± 0.11 km/s |
Is Vega hotter than the Sun?
The stars Vega and Sirius are brighter than the Sun, and also hotter. … Some stars are much cooler and less luminous, such as the closest star to the Sun, Proxima Centauri.
Is Vega star hot or cold?
Vega is a white main sequence star – A-Class. It is almost twice as hot as the Sun, and its luminosity is about 40 times greater than that of our Sun.
Which is hotter Vega or Rigel?
Vega is cooler and brighter than Rigel. Vega is hotter and less bright than Rigel. Q.
How hot is Betelgeuse?
3,500 K Betelgeuse/Surface temperature
How hot is Sirius A?
9,940 K Sirius/Surface temperature The brighter component, termed Sirius A, is a main-sequence star of spectral type early A, with an estimated surface temperature of 9,940 K.
Is Vega a blue star?
Because Vega's blue-white light is so bright — the star has an apparent magnitude of 0.03 — it features prominently in ancient cultures, ranging from the Chinese to the Polynesians to the Hindus. Vega's name comes from the Arabic word "waqi," which means "falling" or "swooping."
Is Vega a double star?
It is still listed as a double star in 1996. The update in 2001 also lists it. The star with Vega is 56.41 arcsec away and is designated as BD+38 3238D of unknown spectral class. That these two stars are undifferentiated between double star or binary star for some 70 years at only 25 lyrs away is remarkable.