What is the spectra of Sirius?
Sirius has a spectral type of A1V, a surface temperature of 9940° Kelvin and a luminosity 25 times the Sun. It has a mass of 2.02 solar masses and a diameter 1.7 times the Sun. The image above shows the uncropped view of Sirius (North is up) through the Takahashi E-180 Astrograph.
What luminosity is Sirius B?
25.4 L☉Sirius / Luminosity
Is Sirius B white dwarf?
Sirius B, a white dwarf, is very faint because of its tiny size, only 12 000 kilometres in diameter. White dwarfs are the leftover remnants of stars similar to our Sun.
What is the absolute magnitude of the star Sirius B?
-1.46Sirius / Magnitude
What is the spectral type of Betelgeuse?
M2IabBetelgeuse / Spectral type
What is the spectral type of Rigel?
B8IabRigel / Spectral type
Is Sirius A binary star?
Sirius, also called Alpha Canis Majoris or the Dog Star, brightest star in the night sky, with apparent visual magnitude −1.46. It is a binary star in the constellation Canis Major.
What kind of star is Procyon B?
dwarf
A binary star system, Procyon consists of a white-hued main-sequence star of spectral type F5 IV–V, designated component A, in orbit with a faint white dwarf companion of spectral type DQZ, named Procyon B. The pair orbit each other with a period of 40.84 years and an eccentricity of 0.4.
What is Betelgeuse luminosity?
Betelgeuse’s luminosity is 100,000-times that of the Sun. However, its surface is also cooler – 3,600 K versus the Sun’s 5,800 K – so only about 13% of its radiant energy is emitted as visible light. Traditionally, Betelgeuse is classified as a pulsating variable star.
What is Polaris spectral class?
Stellar system Polaris Aa is an evolved yellow supergiant of spectral type F7Ib with 5.4 solar masses ( M ☉). It is the first classical Cepheid to have a mass determined from its orbit.
Is Sirius in the Orion constellation?
And the sky’s brightest star Sirius – called the Dog Star because it’s part of the constellation Canis Major the Greater Dog – follows Orion into the sky as the predawn darkness gives way to dawn. That star is Sirius.
What type of star is Vega?
A0VVega / Spectral type